Commit graph

51 commits

Author SHA1 Message Date
Mingye Chen
cefe226467 sync: merge changes from go 1.23.4 2025-02-10 12:30:47 -07:00
Roland Shoemaker
ce1cbd081a crypto/tls: add ech client support
This CL adds a (very opinionated) client-side ECH implementation.

In particular, if a user configures a ECHConfigList, by setting the
Config.EncryptedClientHelloConfigList, but we determine that none of
the configs are appropriate, we will not fallback to plaintext SNI, and
will instead return an error. It is then up to the user to decide if
they wish to fallback to plaintext themselves (by removing the config
list).

Additionally if Config.EncryptedClientHelloConfigList is provided, we
will not offer TLS support lower than 1.3, since negotiating any other
version, while offering ECH, is a hard error anyway. Similarly, if a
user wishes to fallback to plaintext SNI by using 1.2, they may do so
by removing the config list.

With regard to PSK GREASE, we match the boringssl  behavior, which does
not include PSK identities/binders in the outer hello when doing ECH.

If the server rejects ECH, we will return a ECHRejectionError error,
which, if provided by the server, will contain a ECHConfigList in the
RetryConfigList field containing configs that should be used if the user
wishes to retry. It is up to the user to replace their existing
Config.EncryptedClientHelloConfigList with the retry config list.

Fixes #63369

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
Change-Id: I9bc373c044064221a647a388ac61624efd6bbdbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/578575
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-23 03:10:12 +00:00
Roland Shoemaker
5578206479 crypto/tls: reorder client_hello extensions
This sets us up for ECH, which need compressible extensions to be
contiguous. Put them at the end to make things easier for everyone.

Change-Id: I2a51f76d5fcd1b6d82325f5a4a8cde6d75f1be0c
Reviewed-on: https://go-review.googlesource.com/c/go/+/585437
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2024-05-22 22:33:38 +00:00
Roland Shoemaker
990f526003 crypto/tls: don't cache marshal'd bytes
Only cache the wire representation for clientHelloMsg and serverHelloMsg
during unmarshal, which are the only places we actually need to hold
onto them. For everything else, remove the raw field.

This appears to have zero performance impact:

name                                               old time/op   new time/op   delta
CertCache/0-10                                       177µs ± 2%    189µs ±11%   ~     (p=0.700 n=3+3)
CertCache/1-10                                       184µs ± 3%    182µs ± 6%   ~     (p=1.000 n=3+3)
CertCache/2-10                                       187µs ±12%    187µs ± 2%   ~     (p=1.000 n=3+3)
CertCache/3-10                                       204µs ±21%    187µs ± 1%   ~     (p=0.700 n=3+3)
HandshakeServer/RSA-10                               410µs ± 2%    410µs ± 3%   ~     (p=1.000 n=3+3)
HandshakeServer/ECDHE-P256-RSA/TLSv13-10             473µs ± 3%    460µs ± 2%   ~     (p=0.200 n=3+3)
HandshakeServer/ECDHE-P256-RSA/TLSv12-10             498µs ± 3%    489µs ± 2%   ~     (p=0.700 n=3+3)
HandshakeServer/ECDHE-P256-ECDSA-P256/TLSv13-10      140µs ± 5%    138µs ± 5%   ~     (p=1.000 n=3+3)
HandshakeServer/ECDHE-P256-ECDSA-P256/TLSv12-10      132µs ± 1%    133µs ± 2%   ~     (p=0.400 n=3+3)
HandshakeServer/ECDHE-X25519-ECDSA-P256/TLSv13-10    168µs ± 1%    171µs ± 4%   ~     (p=1.000 n=3+3)
HandshakeServer/ECDHE-X25519-ECDSA-P256/TLSv12-10    166µs ± 3%    163µs ± 0%   ~     (p=0.700 n=3+3)
HandshakeServer/ECDHE-P521-ECDSA-P521/TLSv13-10     1.87ms ± 2%   1.81ms ± 0%   ~     (p=0.100 n=3+3)
HandshakeServer/ECDHE-P521-ECDSA-P521/TLSv12-10     1.86ms ± 0%   1.86ms ± 1%   ~     (p=1.000 n=3+3)
Throughput/MaxPacket/1MB/TLSv12-10                  6.79ms ± 3%   6.73ms ± 0%   ~     (p=1.000 n=3+3)
Throughput/MaxPacket/1MB/TLSv13-10                  6.73ms ± 1%   6.75ms ± 0%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/2MB/TLSv12-10                  12.8ms ± 2%   12.7ms ± 0%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/2MB/TLSv13-10                  13.1ms ± 3%   12.8ms ± 1%   ~     (p=0.400 n=3+3)
Throughput/MaxPacket/4MB/TLSv12-10                  24.9ms ± 2%   24.7ms ± 1%   ~     (p=1.000 n=3+3)
Throughput/MaxPacket/4MB/TLSv13-10                  26.0ms ± 4%   24.9ms ± 1%   ~     (p=0.100 n=3+3)
Throughput/MaxPacket/8MB/TLSv12-10                  50.0ms ± 3%   48.9ms ± 0%   ~     (p=0.200 n=3+3)
Throughput/MaxPacket/8MB/TLSv13-10                  49.8ms ± 2%   49.3ms ± 1%   ~     (p=0.400 n=3+3)
Throughput/MaxPacket/16MB/TLSv12-10                 97.3ms ± 1%   97.4ms ± 0%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/16MB/TLSv13-10                 97.9ms ± 0%   97.9ms ± 1%   ~     (p=1.000 n=3+3)
Throughput/MaxPacket/32MB/TLSv12-10                  195ms ± 0%    194ms ± 1%   ~     (p=0.400 n=3+3)
Throughput/MaxPacket/32MB/TLSv13-10                  196ms ± 0%    196ms ± 1%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/64MB/TLSv12-10                  405ms ± 3%    385ms ± 0%   ~     (p=0.100 n=3+3)
Throughput/MaxPacket/64MB/TLSv13-10                  391ms ± 1%    388ms ± 1%   ~     (p=0.200 n=3+3)
Throughput/DynamicPacket/1MB/TLSv12-10              6.75ms ± 0%   6.75ms ± 1%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/1MB/TLSv13-10              6.84ms ± 1%   6.77ms ± 0%   ~     (p=0.100 n=3+3)
Throughput/DynamicPacket/2MB/TLSv12-10              12.8ms ± 1%   12.8ms ± 1%   ~     (p=0.400 n=3+3)
Throughput/DynamicPacket/2MB/TLSv13-10              12.8ms ± 1%   13.0ms ± 1%   ~     (p=0.200 n=3+3)
Throughput/DynamicPacket/4MB/TLSv12-10              24.8ms ± 1%   24.8ms ± 0%   ~     (p=1.000 n=3+3)
Throughput/DynamicPacket/4MB/TLSv13-10              25.1ms ± 2%   25.1ms ± 1%   ~     (p=1.000 n=3+3)
Throughput/DynamicPacket/8MB/TLSv12-10              49.2ms ± 2%   48.9ms ± 0%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/8MB/TLSv13-10              49.3ms ± 1%   49.4ms ± 1%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/16MB/TLSv12-10             97.1ms ± 0%   98.0ms ± 1%   ~     (p=0.200 n=3+3)
Throughput/DynamicPacket/16MB/TLSv13-10             98.8ms ± 1%   98.4ms ± 1%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/32MB/TLSv12-10              192ms ± 0%    198ms ± 5%   ~     (p=0.100 n=3+3)
Throughput/DynamicPacket/32MB/TLSv13-10              194ms ± 0%    196ms ± 1%   ~     (p=0.400 n=3+3)
Throughput/DynamicPacket/64MB/TLSv12-10              385ms ± 1%    384ms ± 0%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/64MB/TLSv13-10              387ms ± 0%    388ms ± 0%   ~     (p=0.400 n=3+3)
Latency/MaxPacket/200kbps/TLSv12-10                  694ms ± 0%    694ms ± 0%   ~     (p=0.700 n=3+3)
Latency/MaxPacket/200kbps/TLSv13-10                  699ms ± 0%    699ms ± 0%   ~     (p=0.700 n=3+3)
Latency/MaxPacket/500kbps/TLSv12-10                  278ms ± 0%    278ms ± 0%   ~     (p=0.400 n=3+3)
Latency/MaxPacket/500kbps/TLSv13-10                  280ms ± 0%    280ms ± 0%   ~     (p=1.000 n=3+3)
Latency/MaxPacket/1000kbps/TLSv12-10                 140ms ± 1%    140ms ± 0%   ~     (p=0.700 n=3+3)
Latency/MaxPacket/1000kbps/TLSv13-10                 141ms ± 0%    141ms ± 0%   ~     (p=1.000 n=3+3)
Latency/MaxPacket/2000kbps/TLSv12-10                70.5ms ± 0%   70.4ms ± 0%   ~     (p=0.700 n=3+3)
Latency/MaxPacket/2000kbps/TLSv13-10                70.7ms ± 0%   70.7ms ± 0%   ~     (p=0.700 n=3+3)
Latency/MaxPacket/5000kbps/TLSv12-10                28.8ms ± 0%   28.8ms ± 0%   ~     (p=0.700 n=3+3)
Latency/MaxPacket/5000kbps/TLSv13-10                28.9ms ± 0%   28.9ms ± 0%   ~     (p=0.700 n=3+3)
Latency/DynamicPacket/200kbps/TLSv12-10              134ms ± 0%    134ms ± 0%   ~     (p=0.700 n=3+3)
Latency/DynamicPacket/200kbps/TLSv13-10              138ms ± 0%    138ms ± 0%   ~     (p=1.000 n=3+3)
Latency/DynamicPacket/500kbps/TLSv12-10             54.1ms ± 0%   54.1ms ± 0%   ~     (p=1.000 n=3+3)
Latency/DynamicPacket/500kbps/TLSv13-10             55.7ms ± 0%   55.7ms ± 0%   ~     (p=0.100 n=3+3)
Latency/DynamicPacket/1000kbps/TLSv12-10            27.6ms ± 0%   27.6ms ± 0%   ~     (p=0.200 n=3+3)
Latency/DynamicPacket/1000kbps/TLSv13-10            28.4ms ± 0%   28.4ms ± 0%   ~     (p=0.200 n=3+3)
Latency/DynamicPacket/2000kbps/TLSv12-10            14.4ms ± 0%   14.4ms ± 0%   ~     (p=1.000 n=3+3)
Latency/DynamicPacket/2000kbps/TLSv13-10            14.6ms ± 0%   14.6ms ± 0%   ~     (p=1.000 n=3+3)
Latency/DynamicPacket/5000kbps/TLSv12-10            6.44ms ± 0%   6.45ms ± 0%   ~     (p=0.100 n=3+3)
Latency/DynamicPacket/5000kbps/TLSv13-10            6.49ms ± 0%   6.49ms ± 0%   ~     (p=0.700 n=3+3)

name                                               old speed     new speed     delta
Throughput/MaxPacket/1MB/TLSv12-10                 155MB/s ± 3%  156MB/s ± 0%   ~     (p=1.000 n=3+3)
Throughput/MaxPacket/1MB/TLSv13-10                 156MB/s ± 1%  155MB/s ± 0%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/2MB/TLSv12-10                 163MB/s ± 2%  165MB/s ± 0%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/2MB/TLSv13-10                 160MB/s ± 3%  164MB/s ± 1%   ~     (p=0.400 n=3+3)
Throughput/MaxPacket/4MB/TLSv12-10                 168MB/s ± 2%  170MB/s ± 1%   ~     (p=1.000 n=3+3)
Throughput/MaxPacket/4MB/TLSv13-10                 162MB/s ± 4%  168MB/s ± 1%   ~     (p=0.100 n=3+3)
Throughput/MaxPacket/8MB/TLSv12-10                 168MB/s ± 3%  172MB/s ± 0%   ~     (p=0.200 n=3+3)
Throughput/MaxPacket/8MB/TLSv13-10                 168MB/s ± 2%  170MB/s ± 1%   ~     (p=0.400 n=3+3)
Throughput/MaxPacket/16MB/TLSv12-10                172MB/s ± 1%  172MB/s ± 0%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/16MB/TLSv13-10                171MB/s ± 0%  171MB/s ± 1%   ~     (p=1.000 n=3+3)
Throughput/MaxPacket/32MB/TLSv12-10                172MB/s ± 0%  173MB/s ± 1%   ~     (p=0.400 n=3+3)
Throughput/MaxPacket/32MB/TLSv13-10                171MB/s ± 0%  172MB/s ± 1%   ~     (p=0.700 n=3+3)
Throughput/MaxPacket/64MB/TLSv12-10                166MB/s ± 3%  174MB/s ± 0%   ~     (p=0.100 n=3+3)
Throughput/MaxPacket/64MB/TLSv13-10                171MB/s ± 1%  173MB/s ± 1%   ~     (p=0.200 n=3+3)
Throughput/DynamicPacket/1MB/TLSv12-10             155MB/s ± 0%  155MB/s ± 1%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/1MB/TLSv13-10             153MB/s ± 1%  155MB/s ± 0%   ~     (p=0.100 n=3+3)
Throughput/DynamicPacket/2MB/TLSv12-10             164MB/s ± 1%  164MB/s ± 1%   ~     (p=0.400 n=3+3)
Throughput/DynamicPacket/2MB/TLSv13-10             163MB/s ± 1%  162MB/s ± 1%   ~     (p=0.200 n=3+3)
Throughput/DynamicPacket/4MB/TLSv12-10             169MB/s ± 1%  169MB/s ± 0%   ~     (p=1.000 n=3+3)
Throughput/DynamicPacket/4MB/TLSv13-10             167MB/s ± 1%  167MB/s ± 1%   ~     (p=1.000 n=3+3)
Throughput/DynamicPacket/8MB/TLSv12-10             170MB/s ± 2%  171MB/s ± 0%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/8MB/TLSv13-10             170MB/s ± 1%  170MB/s ± 1%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/16MB/TLSv12-10            173MB/s ± 0%  171MB/s ± 1%   ~     (p=0.200 n=3+3)
Throughput/DynamicPacket/16MB/TLSv13-10            170MB/s ± 1%  170MB/s ± 1%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/32MB/TLSv12-10            175MB/s ± 0%  170MB/s ± 5%   ~     (p=0.100 n=3+3)
Throughput/DynamicPacket/32MB/TLSv13-10            173MB/s ± 0%  171MB/s ± 1%   ~     (p=0.300 n=3+3)
Throughput/DynamicPacket/64MB/TLSv12-10            174MB/s ± 1%  175MB/s ± 0%   ~     (p=0.700 n=3+3)
Throughput/DynamicPacket/64MB/TLSv13-10            174MB/s ± 0%  173MB/s ± 0%   ~     (p=0.400 n=3+3)

Change-Id: Ifa79cce002011850ed8b2835edd34f60e014eea8
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-arm64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/580215
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
2024-04-19 16:55:49 +00:00
Gaukas Wang
8094658e76
new: Support TLS-PSK (TLS 1.3) (#231)
* uTLS: X25519Kyber768Draft00 hybrid post-quantum key agreement by cloudflare/go (#222)

* crypto/tls: Add hybrid post-quantum key agreement  (#13)

* import: client-side KEM from cloudflare/go

* import: server-side KEM from cloudflare/go

* fix: modify test to get rid of CFEvents.

Note: uTLS does not promise any server-side functionality, and this change is made to be able to conduct unit tests which requires both side to be able to handle KEM Curves.

Co-authored-by: Christopher Wood <caw@heapingbits.net>
Co-Authored-By: Bas Westerbaan <bas@westerbaan.name>

----

Based on:

* crypto/tls: Add hybrid post-quantum key agreement 

Adds X25519Kyber512Draft00, X25519Kyber768Draft00, and
P256Kyber768Draft00 hybrid post-quantum key agreements with temporary
group identifiers.

The hybrid post-quantum key exchanges uses plain X{25519,448} instead
of HPKE, which we assume will be more likely to be adopted. The order
is chosen to match CECPQ2.

Not enabled by default.

Adds CFEvents to detect `HelloRetryRequest`s and to signal which
key agreement was used.

Co-authored-by: Christopher Wood <caw@heapingbits.net>

 [bas, 1.20.1: also adds P256Kyber768Draft00]
 [pwu, 1.20.4: updated circl to v1.3.3, moved code to cfevent.go]

* crypto: add support for CIRCL signature schemes

* only partially port the commit from cloudflare/go. We would stick to the official x509 at the cost of incompatibility.

Co-Authored-By: Bas Westerbaan <bas@westerbaan.name>
Co-Authored-By: Christopher Patton <3453007+cjpatton@users.noreply.github.com>
Co-Authored-By: Peter Wu <peter@lekensteyn.nl>

* crypto/tls: add new X25519Kyber768Draft00 code point

Ported from cloudflare/go to support the upcoming new post-quantum keyshare.

----

* Point tls.X25519Kyber768Draft00 to the new 0x6399 identifier while the
  old 0xfe31 identifier is available as tls.X25519Kyber768Draft00Old.
* Make sure that the kem.PrivateKey can always be mapped to the CurveID
  that was linked to it. This is needed since we now have two ID
  aliasing to the same scheme, and clients need to be able to detect
  whether the key share presented by the server actually matches the key
  share that the client originally sent.
* Update tests, add the new identifier and remove unnecessary code.

Link: https://mailarchive.ietf.org/arch/msg/tls/HAWpNpgptl--UZNSYuvsjB-Pc2k/
Link: https://datatracker.ietf.org/doc/draft-tls-westerbaan-xyber768d00/02/
Co-Authored-By: Peter Wu <peter@lekensteyn.nl>
Co-Authored-By: Bas Westerbaan <bas@westerbaan.name>

---------

Co-authored-by: Bas Westerbaan <bas@westerbaan.name>
Co-authored-by: Christopher Patton <3453007+cjpatton@users.noreply.github.com>
Co-authored-by: Peter Wu <peter@lekensteyn.nl>

* new: enable PQ parrots (#225)

* Redesign KeySharesEcdheParameters into KeySharesParameters which supports multiple types of keys.

* Optimize program logic to prevent using unwanted keys

* new: more parrots and safety update (#227)

* new: PQ and other parrots

Add new preset parrots:
- HelloChrome_114_Padding_PSK_Shuf
- HelloChrome_115_PQ
- HelloChrome_115_PQ_PSK

* new: ShuffleChromeTLSExtensions

Implement a new function `ShuffleChromeTLSExtensions(exts []TLSExtension) []TLSExtension`.

* update: include psk parameter for parrot-related functions

Update following functions' prototype to accept an optional pskExtension (of type *FakePreSharedKeyExtension):
- `UClient(conn net.Conn, config *Config, clientHelloID ClientHelloID)` => `UClient(conn net.Conn, config *Config, clientHelloID ClientHelloID, pskExtension ...*FakePreSharedKeyExtension)`
- `UTLSIdToSpec(id ClientHelloID)` => `UTLSIdToSpec(id ClientHelloID, pskExtension ...*FakePreSharedKeyExtension)`

* new: pre-defined error from UTLSIdToSpec

Update UTLSIdToSpec to return more comprehensive errors by pre-defining them, allowing easier error comparing/unwrapping.

* new: UtlsPreSharedKeyExtension

In `u_pre_shared_key.go`, create `PreSharedKeyExtension` as an interface, with 3 implementations:
- `UtlsPreSharedKeyExtension` implements full support for `pre_shared_key` less resuming after seeing HRR.
- `FakePreSharedKeyExtension` uses CipherSuiteID, SessionSecret and Identities to calculate the corresponding binders and send them, without setting the internal states. Therefore if the server accepts the PSK and tries to resume, the connection fails.
- `HardcodedPreSharedKeyExtension` allows user to hardcode Identities and Binders to be sent in the extension without setting the internal states. Therefore if the server accepts the PSK and tries to resume, the connection fails.

TODO: Only one of FakePreSharedKeyExtension and HardcodedPreSharedKeyExtension should be kept, the other one should be just removed. We still need to learn more of the safety of hardcoding both Identities and Binders without recalculating the latter.

* update: PSK minor changes and example

* Updates PSK implementations for more comprehensible interfaces when applying preset/json/raw fingerprints.
* Revert FakePreSharedKeyExtension to the old implementation. Add binder size checking.
* Implement TLS-PSK example

New bug: setting `tls.Config.ClientSessionCache` will cause PSK to fail. Currently users must set only `tls.UtlsPreSharedKeyExtension.ClientSessionCacheOverride`.

* fix: PSK failing if config session cache set

* Fix a bug causing PSK to fail if Config.ClientSessionCache is set.
* Removed `ClientSessionCacheOverride` from `UtlsPreSharedKeyExtension`. Set the `ClientSessionCache` in `Config`!

Co-Authored-By: zeeker999 <13848632+zeeker999@users.noreply.github.com>

* Optimize tls resumption (#235)

* feat: bug fix and refactor

* feat: improve example docs: add detailed explanation about the design feat: add assertion on uApplyPatch

* fix: address comments
feat: add option `OmitEmptyPsk` and throw error on empty psk by default
feat: revert changes to public interfaces

* fix: weird residue caused by merging conflict

* fix: remove merge conflict residue code

---------

Co-authored-by: Bas Westerbaan <bas@westerbaan.name>
Co-authored-by: Christopher Patton <3453007+cjpatton@users.noreply.github.com>
Co-authored-by: Peter Wu <peter@lekensteyn.nl>
Co-authored-by: zeeker999 <13848632+zeeker999@users.noreply.github.com>
Co-authored-by: 3andne <52860475+3andne@users.noreply.github.com>
2023-08-27 12:48:31 -06:00
Gaukas Wang
86e9b69fdd
sync: Go 1.21 with QUIC support (#208)
* sync: Go 1.21rc3, QUIC support added (#207)

* sync: merge with upstream tag/go-1.21rc3 (#11)

* fix: all tests pass

* impl: UQUIC Transport

* deps: bump up min Go version

* new: uquic

* fix: add QUICTransportParameter

* deprecated: Go 1.19 no longer supported

Go 1.19 will fail to build or pass the test once we bump up to the new version.

* sync: crypto/tls: restrict RSA keys in certificates to <= 8192 bits (#209)

* [release-branch.go1.21] crypto/tls: restrict RSA keys in certificates to <= 8192 bits

Extremely large RSA keys in certificate chains can cause a client/server
to expend significant CPU time verifying signatures. Limit this by
restricting the size of RSA keys transmitted during handshakes to <=
8192 bits.

Based on a survey of publicly trusted RSA keys, there are currently only
three certificates in circulation with keys larger than this, and all
three appear to be test certificates that are not actively deployed. It
is possible there are larger keys in use in private PKIs, but we target
the web PKI, so causing breakage here in the interests of increasing the
default safety of users of crypto/tls seems reasonable.

Thanks to Mateusz Poliwczak for reporting this issue.

Fixes CVE-2023-29409

* build: [ci skip] boring not included

* fix: typo [ci skip]

* docs: replenish readme [ci skip]

replace old build status badge with new ones, bump up required version noted in docs, update developer contact to reflect current status.
2023-08-03 23:22:53 -06:00
Filippo Valsorda
d154b73cf1 crypto/tls: implement Extended Master Secret
All OpenSSL tests now test operation with EMS. To test a handshake
*without* EMS we need to pass -Options=-ExtendedMasterSecret which is
only available in OpenSSL 3.1, which breaks a number of other tests.

Updates #43922

Change-Id: Ib9ac79a1d03fab6bfba5fe9cd66689cff661cda7
Reviewed-on: https://go-review.googlesource.com/c/go/+/497376
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2023-05-25 00:13:30 +00:00
Filippo Valsorda
1143de0f03 crypto/tls: add QUIC 0-RTT APIs
Fixes #60107

Change-Id: I158b1c2d80d8ebb5ed7a8e6f313f69060754e220
Reviewed-on: https://go-review.googlesource.com/c/go/+/496995
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-05-25 00:13:28 +00:00
Damien Neil
b7691e8126 crypto/tls: support QUIC as a transport
Add a QUICConn type for use by QUIC implementations.

A QUICConn provides unencrypted handshake bytes and connection
secrets to the QUIC layer, and receives handshake bytes.

For #44886

Change-Id: I859dda4cc6d466a1df2fb863a69d3a2a069110d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/493655
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
2023-05-24 22:40:18 +00:00
Gaukas Wang
dae72adb81
feat: Convert raw bytes or tlsfingerprint record to ClientHelloSpec (#168)
* feat: byte to clienthellospecs conversion

* feat: specific case for GREASE and ALPS

Will automatically add "h2" to ALPS and write to log when GREASE extension is imported in `ImportTLSClientHello()`

* fix: ReadCompressionMethods

ReadCompressionMethods didn't advance the s and fails reading extensions

* fix: remove debug log

* fix: use cryptobyte for internal helper

`helper.Uint8to16()` now calls `(*cryptobyte.String).ReadUint16()`

* fix: preshared key fingerprinter test

updated fingerprinter test to test with PreSharedKey extension

* fix: naming of FakePreSharedKeyExt

It is a Fake extension since `crypto/tls` doesn't really implement PSK-based resumption and neither do we.

* feat: Properly check GREASE

Adopted from #148.

Co-Authored-By: gfw-report <gfw.report@protonmail.com>

* feat: add fakeExtensionEncryptThenMAC

And reordered `fakeExtensionDelegatedCredentials`.

The new `Fingerprinter` is expected to account for the `fakeExtensionEncryptThenMAC` using a `GenericExtension` when `allowBluntMimicry` is set.

Co-Authored-By: gfw-report <gfw.report@protonmail.com>

* fix: remove keepPSK and minor

- Removed all presence of keepPSK flag.
- Added check before using the field of a map.

---------

Co-authored-by: gfw-report <gfw.report@protonmail.com>
2023-03-09 15:06:43 -07:00
Gaukas Wang
71b4ad3909
Sync with upstream: Go 1.19.6 (no new change in 1.19.7) (#172)
* Adding all changes from Go 1.19.6 w/ Conflict Unresolved (#10)

* [dev.boringcrypto] crypto/sha1,sha256,sha512: use BoringCrypto

Change-Id: I80a764971b41f75c3b699797bfed71f509e3407d
Reviewed-on: https://go-review.googlesource.com/55474
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/aes: use BoringCrypto

Change-Id: If83fdeac31f65aba818bbc7edd2f215b16814021
Reviewed-on: https://go-review.googlesource.com/55476
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls: use TLS-specific AES-GCM mode if available

Change-Id: Ide00c40c0ca8d486f3bd8968e1d301c8b0ed6d05
Reviewed-on: https://go-review.googlesource.com/56011
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls/fipsonly: new package to force FIPS-allowed TLS settings

Change-Id: I3268cab2de8aed9e2424e9c3bc7667083bc5e1ce
Reviewed-on: https://go-review.googlesource.com/65250
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls: restore AES-GCM priority when BoringCrypto is enabled

This patch used to be in crypto/internal/cipherhw.AESGCMSupport which
was removed from the tree. It was meant and documented to affect only
crypto/tls, so move the logic there.

Change-Id: I36ed4f08a5fe2abaab18907910899ae0297d1611
Reviewed-on: https://go-review.googlesource.com/114816
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls: test for TLS 1.3 to be disabled in FIPS mode

Change-Id: I32b3e29a3e34f20cccc51666905fd36744ef00b2
Reviewed-on: https://go-review.googlesource.com/c/149602
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: add support for Ed25519 certificates in TLS 1.2 and 1.3

Support for Ed25519 certificates was added in CL 175478, this wires them
up into the TLS stack according to RFC 8422 (TLS 1.2) and RFC 8446 (TLS 1.3).

RFC 8422 also specifies support for TLS 1.0 and 1.1, and I initially
implemented that, but even OpenSSL doesn't take the complexity, so I
just dropped it. It would have required keeping a buffer of the
handshake transcript in order to do the direct Ed25519 signatures. We
effectively need to support TLS 1.2 because it shares ClientHello
signature algorithms with TLS 1.3.

While at it, reordered the advertised signature algorithms in the rough
order we would want to use them, also based on what curves have fast
constant-time implementations.

Client and client auth tests changed because of the change in advertised
signature algorithms in ClientHello and CertificateRequest.

Fixes #25355

Change-Id: I9fdd839afde4fd6b13fcbc5cc7017fd8c35085ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/177698
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: fix TestVerifyHostnameResumed

In TLS 1.3 session tickets are delivered after the handshake, and it
looks like now the Google servers wait until the first flight of data to
send them (or our timeout is too low). Cause some data to be sent so we
can avoid the guessing game.

Fixes #32090

Change-Id: I54af4acb3a89cc70c9e14a5dfe18a44c29a841a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/177877
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* all: remove PEM-encoded private keys from tests

Gerrit is complaining about pushes that affect these files
and forcing people to use -o nokeycheck, which defeats
the point of the check. Hide the keys from this kind of scan
by marking them explicitly as testing keys.

This is a little annoying but better than training everyone
who ever edits one of these test files to reflexively override
the Gerrit check.

The only remaining keys explicitly marked as private instead
of testing are in examples, and there's not much to do
about those. Hopefully they are not edited as much.

Change-Id: I4431592b5266cb39fe6a80b40e742d97da803a0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/178178
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* all: shorten some tests

Shorten some of the longest tests that run during all.bash.
Removes 7r 50u 21s from all.bash.

After this change, all.bash is under 5 minutes again on my laptop.

For #26473.

Change-Id: Ie0460aa935808d65460408feaed210fbaa1d5d79
Reviewed-on: https://go-review.googlesource.com/c/go/+/177559
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

* [dev.boringcrypto] crypto: move crypto/internal/boring imports to reduce merge conflicts

As suggested by dmitshur@, move them to their own block so they don't
conflict with changes in the upstream imports.

Change-Id: Id46fb7c766066c406023b0355f4c3c860166f0fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/181277
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

* crypto/tls: disable RSA-PSS in TLS 1.2 again

Signing with RSA-PSS can uncover faulty crypto.Signer implementations,
and it can fail for (broken) small keys. We'll have to take that
breakage eventually, but it would be nice for it to be opt-out at first.

TLS 1.3 requires RSA-PSS and is opt-out in Go 1.13. Instead of making a
TLS 1.3 opt-out influence a TLS 1.2 behavior, let's wait to add RSA-PSS
to TLS 1.2 until TLS 1.3 is on without opt-out.

Note that since the Client Hello is sent before a protocol version is
selected, we have to advertise RSA-PSS there to support TLS 1.3.
That means that we still support RSA-PSS on the client in TLS 1.2 for
verifying server certificates, which is fine, as all issues arise on the
signing side. We have to be careful not to pick (or consider available)
RSA-PSS on the client for client certificates, though.

We'd expect tests to change only in TLS 1.2:

    * the server won't pick PSS to sign the key exchange
      (Server-TLSv12-* w/ RSA, TestHandshakeServerRSAPSS);
    * the server won't advertise PSS in CertificateRequest
      (Server-TLSv12-ClientAuthRequested*, TestClientAuth);
    * and the client won't pick PSS for its CertificateVerify
      (Client-TLSv12-ClientCert-RSA-*, TestHandshakeClientCertRSAPSS,
      Client-TLSv12-Renegotiate* because "R" requests a client cert).

Client-TLSv13-ClientCert-RSA-RSAPSS was updated because of a fix in the test.

This effectively reverts 88343530720a52c96b21f2bd5488c8fb607605d7.

Testing was made more complex by the undocumented semantics of OpenSSL's
-[client_]sigalgs (see openssl/openssl#9172).

Updates #32425

Change-Id: Iaddeb2df1f5c75cd090cc8321df2ac8e8e7db349
Reviewed-on: https://go-review.googlesource.com/c/go/+/182339
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: move shared code and resources to handshake_test.go

Removed cross-dependencies between handshake_server_test.go and
handshake_client_test.go; moved all initialization to TestMain; replaced
SSLKEYLOGFILE environment variable with -keylog flag.

Change-Id: Ida6712daa44e01a2c00658e8a1896087ee88bcb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/183057
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: reject low-order Curve25519 points

The RFC recommends checking the X25519 output to ensure it's not the
zero value, to guard against peers trying to remove contributory
behavior.

In TLS there should be enough transcript involvement to mitigate any
attack, and the RSA key exchange would suffer from the same issues by
design, so not proposing a backport.

See #31846

Change-Id: I8e657f8ee8aa72c3f8ca3b124555202638c53f5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/183039
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: deflake localPipe in tests

The localPipe implementation assumes that every successful net.Dial
results in exactly one successful listener.Accept. I don't believe this
is guaranteed by essentially any operating system. For this test, we're
seeing flakes on dragonfly (#29583).

But see also #19519, flakes due to the same assumption on FreeBSD
and macOS in package net's own tests.

This CL rewrites localPipe to try a few times to get a matching pair
of connections on the dial and accept side.

Fixes #29583.

Change-Id: Idb045b18c404eae457f091df20456c5ae879a291
Reviewed-on: https://go-review.googlesource.com/c/go/+/184157
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

* crypto/tls: remove TestVerifyHostnameResumed

Session resumption is not a reliable TLS behavior: the server can decide
to reject a session ticket for a number of reasons, or no reason at all.
This makes this non-hermetic test extremely brittle.

It's currently broken on the builders for both TLS 1.2 and TLS 1.3, and
I could reproduce the issue for TLS 1.3 only. As I was debugging it, it
started passing entirely on my machine.

In practice, it doesn't get us any coverage as resumption is already
tested with the recorded exchange tests, and TestVerifyHostname still
provides a smoke test checking that we can in fact talk TLS.

Fixes #32978

Change-Id: I63505e22ff7704f25ad700d46e4ff14850ba5d3c
Reviewed-on: https://go-review.googlesource.com/c/go/+/186239
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

* crypto/tls: deprecate SSLv3 support

Updates #32716

Change-Id: Ia0c03918e8f2da4d9824c49c6d4cfca1b0787b0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/184102
Reviewed-by: Andrew Bonventre <andybons@golang.org>

* crypto/tls: make SSLv3 again disabled by default

It was mistakenly re-enabled in CL 146217.

Fixes #33837

Change-Id: I8c0e1787114c6232df5888e51e355906622295bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/191877
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

* crypto/tls: remove SSLv3 support

SSLv3 has been irreparably broken since the POODLE attack 5 years ago
and RFC 7568 (f.k.a. draft-ietf-tls-sslv3-diediedie) prohibits its use
in no uncertain terms.

As announced in the Go 1.13 release notes, remove support for it
entirely in Go 1.14.

Updates #32716

Change-Id: Id653557961d8f75f484a01e6afd2e104a4ccceaf
Reviewed-on: https://go-review.googlesource.com/c/go/+/191976
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: remove TLS 1.3 opt-out

Fixes #30055

Change-Id: If757c43b52fc7bf62b0afb1c720615329fb5569d
Reviewed-on: https://go-review.googlesource.com/c/go/+/191999
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* all: fix typos

Use the following (suboptimal) script to obtain a list of possible
typos:

  #!/usr/bin/env sh

  set -x

  git ls-files |\
    grep -e '\.\(c\|cc\|go\)$' |\
    xargs -n 1\
    awk\
    '/\/\// { gsub(/.*\/\//, ""); print; } /\/\*/, /\*\// { gsub(/.*\/\*/, ""); gsub(/\*\/.*/, ""); }' |\
    hunspell -d en_US -l |\
    grep '^[[:upper:]]\{0,1\}[[:lower:]]\{1,\}$' |\
    grep -v -e '^.\{1,4\}$' -e '^.\{16,\}$' |\
    sort -f |\
    uniq -c |\
    awk '$1 == 1 { print $2; }'

Then, go through the results manually and fix the most obvious typos in
the non-vendored code.

Change-Id: I3cb5830a176850e1a0584b8a40b47bde7b260eae
Reviewed-on: https://go-review.googlesource.com/c/go/+/193848
Reviewed-by: Robert Griesemer <gri@golang.org>

* crypto/tls: remove NPN support

RELNOTE=yes

Fixes #28362

Change-Id: I43813c0c17bbe6c4cbb4d1f121518c434b3f5aa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/174329
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* crypto/tls: consistently use %v for error formatting

We should keep a consistent way of formatting errors
in this file.

Fixes #34848

Change-Id: Ibb75908504f381fccab0281a42e788ef8c716b6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/200679
Run-TryBot: Johan Brandhorst <johan.brandhorst@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>

* crypto/tls: retry net.Dial flakes on Dragonfly

localPipe currently flakes in various crypto/tls tests. Since that
function doesn't seem to flake anywhere else, I suspect a kernel bug.

To make the test less flaky, retry the Dial if we suspect that it is
affected. (Worst case, we delay the test by a few seconds before
erroring out as usual.)

Fixes #29583

Change-Id: I357990ffa316edb471bd7d46d6404fa0884da646
Reviewed-on: https://go-review.googlesource.com/c/go/+/202557
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: move a defer out of a loop

Rhys Hiltner noted in #14939 that this defer was
syntactically inside a loop, but was only ever

executed once. Now that defer in a loop
is significantly slower, pull this one out.

name                                    old time/op   new time/op   delta
Throughput/MaxPacket/1MB/TLSv12-8        3.94ms ± 8%   3.93ms ±13%    ~     (p=0.967 n=15+15)
Throughput/MaxPacket/1MB/TLSv13-8        4.33ms ± 3%   4.51ms ± 7%  +4.00%  (p=0.000 n=14+14)
Throughput/MaxPacket/2MB/TLSv12-8        6.80ms ± 6%   7.01ms ± 4%  +3.15%  (p=0.000 n=14+14)
Throughput/MaxPacket/2MB/TLSv13-8        6.96ms ± 5%   6.80ms ± 5%  -2.43%  (p=0.006 n=15+14)
Throughput/MaxPacket/4MB/TLSv12-8        12.0ms ± 3%   11.7ms ± 2%  -2.88%  (p=0.000 n=15+13)
Throughput/MaxPacket/4MB/TLSv13-8        12.1ms ± 3%   11.7ms ± 2%  -3.54%  (p=0.000 n=13+13)
Throughput/MaxPacket/8MB/TLSv12-8        22.2ms ± 3%   21.6ms ± 3%  -2.97%  (p=0.000 n=15+15)
Throughput/MaxPacket/8MB/TLSv13-8        22.5ms ± 5%   22.0ms ± 3%  -2.34%  (p=0.004 n=15+15)
Throughput/MaxPacket/16MB/TLSv12-8       42.4ms ± 3%   41.3ms ± 3%  -2.49%  (p=0.001 n=15+15)
Throughput/MaxPacket/16MB/TLSv13-8       43.4ms ± 5%   42.3ms ± 3%  -2.33%  (p=0.006 n=15+14)
Throughput/MaxPacket/32MB/TLSv12-8       83.1ms ± 4%   80.6ms ± 3%  -2.98%  (p=0.000 n=15+15)
Throughput/MaxPacket/32MB/TLSv13-8       85.2ms ± 8%   82.6ms ± 4%  -3.02%  (p=0.005 n=15+15)
Throughput/MaxPacket/64MB/TLSv12-8        167ms ± 7%    158ms ± 2%  -5.21%  (p=0.000 n=15+15)
Throughput/MaxPacket/64MB/TLSv13-8        170ms ± 4%    162ms ± 3%  -4.83%  (p=0.000 n=15+15)
Throughput/DynamicPacket/1MB/TLSv12-8    4.13ms ± 7%   4.00ms ± 8%    ~     (p=0.061 n=15+15)
Throughput/DynamicPacket/1MB/TLSv13-8    4.72ms ± 6%   4.64ms ± 7%    ~     (p=0.377 n=14+15)
Throughput/DynamicPacket/2MB/TLSv12-8    7.29ms ± 7%   7.09ms ± 7%    ~     (p=0.070 n=15+14)
Throughput/DynamicPacket/2MB/TLSv13-8    7.18ms ± 5%   6.59ms ± 4%  -8.34%  (p=0.000 n=15+15)
Throughput/DynamicPacket/4MB/TLSv12-8    12.3ms ± 3%   11.9ms ± 4%  -3.31%  (p=0.000 n=15+14)
Throughput/DynamicPacket/4MB/TLSv13-8    12.2ms ± 4%   12.0ms ± 4%  -1.91%  (p=0.019 n=15+15)
Throughput/DynamicPacket/8MB/TLSv12-8    22.4ms ± 3%   21.9ms ± 3%  -2.18%  (p=0.000 n=15+15)
Throughput/DynamicPacket/8MB/TLSv13-8    22.7ms ± 3%   22.2ms ± 3%  -2.35%  (p=0.000 n=15+15)
Throughput/DynamicPacket/16MB/TLSv12-8   42.3ms ± 3%   42.1ms ± 3%    ~     (p=0.505 n=14+15)
Throughput/DynamicPacket/16MB/TLSv13-8   42.7ms ± 3%   43.3ms ± 7%    ~     (p=0.123 n=15+14)
Throughput/DynamicPacket/32MB/TLSv12-8   82.8ms ± 3%   81.9ms ± 3%    ~     (p=0.112 n=14+15)
Throughput/DynamicPacket/32MB/TLSv13-8   84.6ms ± 6%   83.9ms ± 4%    ~     (p=0.624 n=15+15)
Throughput/DynamicPacket/64MB/TLSv12-8    166ms ± 4%    163ms ± 6%    ~     (p=0.081 n=15+15)
Throughput/DynamicPacket/64MB/TLSv13-8    165ms ± 3%    168ms ± 3%  +1.56%  (p=0.029 n=15+15)

Change-Id: I22409b05afe761b8ed1912b15c67fc03f88d3d1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/203481
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: improve error messages for invalid certificates and signatures

Also, fix the alert value sent when a signature by a client certificate
is invalid in TLS 1.0-1.2.

Fixes #35190

Change-Id: I2ae1d5593dfd5ee2b4d979664aec74aab4a8a704
Reviewed-on: https://go-review.googlesource.com/c/go/+/204157
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: send ec_points_format extension in ServerHello

Follow the recommandation from RFC 8422, section 5.1.2 of sending back the
ec_points_format extension when requested by the client. This is to fix
some clients declining the handshake if omitted.

Fixes #31943

Change-Id: I7b04dbac6f9af75cda094073defe081e1e9a295d
Reviewed-on: https://go-review.googlesource.com/c/go/+/176418
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Olivier Poitrey <rs@rhapsodyk.net>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

* crypto/tls: make -update only regenerate transcripts for failing tests

Change-Id: Ie68fd4fe2879e6b5417a1a4240971e3d837bf115
Reviewed-on: https://go-review.googlesource.com/c/go/+/204377
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

* crypto/tls: add ExampleConfig_VerifyPeerCertificate

Setting InsecureSkipVerify and VerifyPeerCertificate is the recommended
way to customize and override certificate validation.

However, there is boilerplate involved and it usually requires first
reimplementing the default validation strategy to then customize it.
Provide an example that does the same thing as the default as a starting
point.

Examples of where we directed users to do something similar are in
issues #35467, #31791, #28754, #21971, and #24151.

Fixes #31792

Change-Id: Id033e9fa3cac9dff1f7be05c72dfb34b4f973fd4
Reviewed-on: https://go-review.googlesource.com/c/go/+/193620
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: refactor certificate and signature algorithm logic

This refactors a lot of the certificate support logic to make it cleaner
and reusable where possible. These changes will make the following CLs
much simpler.

In particular, the heavily overloaded pickSignatureAlgorithm is gone.
That function used to cover both signing and verifying side, would work
both for pre-signature_algorithms TLS 1.0/1.1 and TLS 1.2, and returned
sigalg, type and hash.

Now, TLS 1.0/1.1 and 1.2 are differentiated at the caller, as they have
effectively completely different logic. TLS 1.0/1.1 simply use
legacyTypeAndHashFromPublicKey as they employ a fixed hash function and
signature algorithm for each public key type. TLS 1.2 is instead routed
through selectSignatureScheme (on the signing side) or
isSupportedSignatureAlgorithm (on the verifying side) and
typeAndHashFromSignatureScheme, like TLS 1.3.

On the signing side, signatureSchemesForCertificate was already version
aware (for PKCS#1 v1.5 vs PSS support), so selectSignatureScheme just
had to learn the Section 7.4.1.4.1 defaults for a missing
signature_algorithms to replace pickSignatureAlgorithm.

On the verifying side, pickSignatureAlgorithm was also checking the
public key type, while isSupportedSignatureAlgorithm +
typeAndHashFromSignatureScheme are not, but that check was redundant
with the one in verifyHandshakeSignature.

There should be no major change in behavior so far. A few minor changes
came from the refactor: we now correctly require signature_algorithms in
TLS 1.3 when using a certificate; we won't use Ed25519 in TLS 1.2 if the
client didn't send signature_algorithms; and we don't send
ec_points_format in the ServerHello (a compatibility measure) if we are
not doing ECDHE anyway because there are no mutually supported curves.

The tests also got simpler because they test simpler functions. The
caller logic switching between TLS 1.0/1.1 and 1.2 is tested by the
transcript tests.

Updates #32426

Change-Id: Ice9dcaea78d204718f661f8d60efdb408ba41577
Reviewed-on: https://go-review.googlesource.com/c/go/+/205061
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: implement (*ClientHelloInfo).SupportsCertificate

We'll also use this function for a better selection logic from
Config.Certificates in a later CL.

Updates #32426

Change-Id: Ie239574d02eb7fd2cf025ec36721c8c7e082d0bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/205057
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: implement (*CertificateRequestInfo).SupportsCertificate

Also, add Version to CertificateRequestInfo, as the semantics of
SignatureSchemes change based on version: the ECDSA SignatureSchemes are
only constrained to a specific curve in TLS 1.3.

Fixes #32426

Change-Id: I7a551bea864799e98118349ac2476162893d1ffd
Reviewed-on: https://go-review.googlesource.com/c/go/+/205058
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: select only compatible chains from Certificates

Now that we have a full implementation of the logic to check certificate
compatibility, we can let applications just list multiple chains in
Certificates (for example, an RSA and an ECDSA one) and choose the most
appropriate automatically.

NameToCertificate only maps each name to one chain, so simply deprecate
it, and while at it simplify its implementation by not stripping
trailing dots from the SNI (which is specified not to have any, see RFC
6066, Section 3) and by not supporting multi-level wildcards, which are
not a thing in the WebPKI (and in crypto/x509).

The performance of SupportsCertificate without Leaf is poor, but doesn't
affect current users. For now document that, and address it properly in
the next cycle. See #35504.

While cleaning up the Certificates/GetCertificate/GetConfigForClient
behavior, also support leaving Certificates/GetCertificate nil if
GetConfigForClient is set, and send unrecognized_name when there are no
available certificates.

Fixes #29139
Fixes #18377

Change-Id: I26604db48806fe4d608388e55da52f34b7ca4566
Reviewed-on: https://go-review.googlesource.com/c/go/+/205059
Run-TryBot: Filippo Valsorda <filippo@golang.org>
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Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: implement Certificate.SupportedSignatureAlgorithms

This will let applications stop crypto/tls from using a certificate key
with an algorithm that is not supported by its crypto.Signer, like
hardware backed keys that can't do RSA-PSS.

Fixes #28660

Change-Id: I294cc06bddf813fff35c5107540c4a1788e1dace
Reviewed-on: https://go-review.googlesource.com/c/go/+/205062
Run-TryBot: Filippo Valsorda <filippo@golang.org>
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Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: re-enable RSA-PSS in TLS 1.2 again

TLS 1.3, which requires RSA-PSS, is now enabled without a GODEBUG
opt-out, and with the introduction of
Certificate.SupportedSignatureAlgorithms (#28660) there is a
programmatic way to avoid RSA-PSS (disable TLS 1.3 with MaxVersion and
use that field to specify only PKCS#1 v1.5 SignatureSchemes).

This effectively reverts 0b3a57b5374bba3fdf88258e2be4c8be65e6a5de,
although following CL 205061 all of the signing-side logic is
conveniently centralized in signatureSchemesForCertificate.

Fixes #32425

Change-Id: I7c9a8893bb5d518d86eae7db82612b9b2cd257d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/205063
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Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: add correct names for CHACHA20_POLY1305 cipher suite constants

The cipher suites were apparently renamed late in the standardization
process, and we picked up the legacy name. We can't remove the old
constants, but add correctly named ones.

Fixes #32061

Change-Id: I65ee25c12c10934391af88b76b18565da67453fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/205068
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Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: add CipherSuites, InsecureCipherSuites and CipherSuiteName

Fixes #30325

Change-Id: I497110224bb73ecfcc4655698a794e7aa4a66925
Reviewed-on: https://go-review.googlesource.com/c/go/+/175517
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* crypto/tls: take key size into account in signature algorithm selection

Fixes #29793

Change-Id: I6e389d166c2d9a2ba8664a41f4b9569f2481b27f
Reviewed-on: https://go-review.googlesource.com/c/go/+/205177
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* crypto/tls: retry ETIMEDOUT flakes in localPipe on dragonfly

Fixes #29583

Change-Id: Ia89433bddd4c9f67ec1f0150b730cde8a7e973ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/206759
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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* src/vendor,crypto/tls: update to latest x/crypto and use new X25519 API

Change-Id: Icd5006e37861d892a5f3d4397c3826179c1b12ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/206657
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* all: fix a bunch of misspellings

Change-Id: I5b909df0fd048cd66c5a27fca1b06466d3bcaac7
GitHub-Last-Rev: 778c5d21311abee09a5fbda2e4005a5fd4cc3f9f
GitHub-Pull-Request: golang/go#35624
Reviewed-on: https://go-review.googlesource.com/c/go/+/207421
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* crypto/tls: remove leftover extensionNextProtoNeg constant

NPN was removed in CL 174329.

Change-Id: Ic63ad53e7e24872e28673d590727e0300f435619
Reviewed-on: https://go-review.googlesource.com/c/go/+/208224
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: fix a typo in TLS handshake comment

Fix a minor typo in the TLS handshake comment.

Change-Id: I0fd243e5440f6c77c97e844e6669a7974a2c8798
GitHub-Last-Rev: 21e91a1a48e8a9200e6fca89a988e1383ded7bb2
GitHub-Pull-Request: golang/go#36030
Reviewed-on: https://go-review.googlesource.com/c/go/+/210289
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: stop a timeout timer

I noticed this leak while writing CL 214977.

Change-Id: I7566952b8e4bc58939d23435aea86576fc58ddca
Reviewed-on: https://go-review.googlesource.com/c/go/+/214978
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* crypto/tls: clarify TLS 1.0/1.1 CertificateRequestInfo.SignatureSchemes

This CL should not change the logic at all, but it took me a while to
figure out why we use these specific SignatureSchemes, so reformulate
the comment.

Change-Id: If519a58264209e6575417be07668e92ead0e772f
Reviewed-on: https://go-review.googlesource.com/c/go/+/208225
Run-TryBot: Filippo Valsorda <filippo@golang.org>
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* crypto/tls: update ExampleDial with a valid root

When run as a separate program, the code in ExampleDial panicked due to
an expired certificate. Fixed this problem by replacing the expired
certificate with a valid one.

Also added a comment in the certificate to give a hint about why it
might fail in the future.

Fixes #35706

Change-Id: I3d300f7bccae050e4b73ded28b8029aa04b480bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/212601
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* crypto/tls: use new ecdsa.VerifyASN1 API

Change-Id: I2a233190bda78ca022ff4074b4553788847d7583
Reviewed-on: https://go-review.googlesource.com/c/go/+/220720
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* all: fix incorrect channel and API usage in some unit tests

This CL changes some unit test functions, making sure that these tests (and goroutines spawned during test) won't block.
Since they are just test functions, I use one CL to fix them all. I hope this won't cause trouble to reviewers and can save time for us.
There are three main categories of incorrect logic fixed by this CL:
1. Use testing.Fatal()/Fatalf() in spawned goroutines, which is forbidden by Go's document.
2. Channels are used in such a way that, when errors or timeout happen, the test will be blocked and never return.
3. Channels are used in such a way that, when errors or timeout happen, the test can return but some spawned goroutines will be leaked, occupying resource until all other tests return and the process is killed.

Change-Id: I3df931ec380794a0cf1404e632c1dd57c65d63e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/219380
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* crypto/tls: add {SignatureScheme,CurveID,ClientAuthType}.String()

Fixes #35499

Change-Id: Ieb487782f389f6d80e8f68ee980e584d906cb4da
Reviewed-on: https://go-review.googlesource.com/c/go/+/208226
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* crypto/tls: update the MITM reference to "machine-in-the-middle"

Changing "man-in-the-middle" references to "machine-in-the-middle",
it's a more inclusive term and still aligns with the MITM acronym.

Change-Id: I81f954cff3d252433443f159ff9edaf59a28ab9d
GitHub-Last-Rev: 3e8f91424a207233b537984747ae90cbc1f03755
GitHub-Pull-Request: golang/go#37918
Reviewed-on: https://go-review.googlesource.com/c/go/+/223897
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* crypto/tls: add missing alert values

Fixes #35911

Change-Id: I093d25aa169963769b51c37d2481bce71bd0fd2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/226858
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* crypto/tls: failed tls.Conn.Write returns a permanent error

Fixes #29971

Change-Id: I2f1653640c88fafe0ec17a75dcf41d5896c4cb8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/227840
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Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
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* crypto/tls: help linker remove code when only Client or Server is used

This saves 166 KiB for a tls.Dial hello world program (5382441 to
5212356 to bytes), by permitting the linker to remove TLS server code.

Change-Id: I16610b836bb0802b7d84995ff881d79ec03b6a84
Reviewed-on: https://go-review.googlesource.com/c/go/+/228111
Reviewed-by: Ian Lance Taylor <iant@golang.org>

* crypto/tls: add Dialer

Fixes #18482

Change-Id: I99d65dc5d824c00093ea61e7445fc121314af87f
Reviewed-on: https://go-review.googlesource.com/c/go/+/214977
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

* math/big: add (*Int).FillBytes

Replaced almost every use of Bytes with FillBytes.

Note that the approved proposal was for

    func (*Int) FillBytes(buf []byte)

while this implements

    func (*Int) FillBytes(buf []byte) []byte

because the latter was far nicer to use in all callsites.

Fixes #35833

Change-Id: Ia912df123e5d79b763845312ea3d9a8051343c0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/230397
Reviewed-by: Robert Griesemer <gri@golang.org>

* crypto/tls: enforce TLS 1.3 (and TLS 1.2) downgrade protection checks

Fixes #37763

Change-Id: Ic6bcc9af0d164966f4ae31087998e5b546540038
Reviewed-on: https://go-review.googlesource.com/c/go/+/231038
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* crypto/tls: marshal sessionState using cryptobyte

Change-Id: I95a60b837e19d0c4bf45ea74baa5843a8244a186
Reviewed-on: https://go-review.googlesource.com/c/go/+/231218
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* crypto/tls: accept HelloRetryRequest messages with only a cookie

Clients have to reject any HelloRetryRequest message that doesn't lead
to a change in the ClientHello. Instead, we were rejecting any HRR that
didn't select an alternative group, even if it sent a cookie, which
would change the CH.

The good news is that I know of no TLS servers that use or need HRRs
exclusively for cookies (which are mostly useful in DTLS as a way to
verify the source address). The bad news is that we poisoned the
ecosystem as Go 1.12 to 1.14 will reject such HRRs. Oops, hopefully no
one needed this.

No tests because neither Go nor s_server support cookies. This would
presumably get covered once we integrate BoGo.

Fixes #30149

Change-Id: I760fb1ded81148ac3096cf201cbc1e941374b83d
Reviewed-on: https://go-review.googlesource.com/c/go/+/231039
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* crypto/tls: fix sessionState marshaling

Change-Id: I2910f322256c521dd03b1dc23d117defdcd0aa54
Reviewed-on: https://go-review.googlesource.com/c/go/+/232662
Run-TryBot: Katie Hockman <katie@golang.org>
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* crypto/tls: rotate session keys in older TLS versions

Also encode the certificates in a way that's more
consistent with TLS 1.3 (with a 24 byte length prefix).

Note that this will have an additional performance cost
requiring clients to do a full handshake every 7 days
where previously they were able to use the same ticket
indefinitely.

Updates #25256

Change-Id: Ic4d1ba0d92773c490b33b5f6c1320d557cc7347d
Reviewed-on: https://go-review.googlesource.com/c/go/+/231317
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* crypto/tls: rotate session ticket keys

Automatically rotate session ticket keys for servers
that don't already have sessionTicketKeys and that
haven't called SetSessionTicketKeys.

Now, session ticket keys will be rotated every 24 hours
with a lifetime of 7 days. This adds a small performance
cost to existing clients that don't provide a session
ticket encrypted with a fresh enough session ticket key,
which would require a full handshake.

Updates #25256

Change-Id: I15b46af7a82aab9a108bceb706bbf66243a1510f
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* crypto/tls: add Config.VerifyConnection callback

Since the ConnectionState will now be available during
verification, some code was moved around in order to
initialize and make available as much of the fields on
Conn as possible before the ConnectionState is verified.

Fixes #36736

Change-Id: I0e3efa97565ead7de5c48bb8a87e3ea54fbde140
Reviewed-on: https://go-review.googlesource.com/c/go/+/229122
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* crypto/tls: persist the createdAt time when re-wrapping session tickets

Change-Id: I33fcde2d544943fb04c2599810cf7fb773aeba1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/234483
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* crypto/tls: remove version check when unmarshaling sessionState

This was causing issues when fuzzing with
TestMarshalUnmarshal since the test would
occassionally set the version to VersionTLS13,
which would fail when unmarshaling. The check
doesn't add much in practice, and there is no
harm in removing it to de-flake the test.

Fixes #38902

Change-Id: I0906c570e9ed69c85fdd2c15f1b52f9e372c62e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/234486
Run-TryBot: Katie Hockman <katie@golang.org>
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* crypto/tls: fix duplicate calls to VerifyConnection

Also add a test that could reproduce this error and
ensure it doesn't occur in other configurations.

Fixes #39012

Change-Id: If792b5131f312c269fd2c5f08c9ed5c00188d1af
Reviewed-on: https://go-review.googlesource.com/c/go/+/233957
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* crypto/tls: test that Clone copies session ticket key fields

Updates #25256

Change-Id: If16c42581f1cf3500fd7fd01c915e487f8025e55
Reviewed-on: https://go-review.googlesource.com/c/go/+/235922
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* crypto/tls: set CipherSuite for VerifyConnection

The ConnectionState's CipherSuite was not set prior
to the VerifyConnection callback in TLS 1.2 servers,
both for full handshakes and resumptions.

Change-Id: Iab91783eff84d1b42ca09c8df08e07861e18da30
Reviewed-on: https://go-review.googlesource.com/c/go/+/236558
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* crypto/tls: restore OCSP and SCTs during session resumption

Restore previously sent SCTs and stapled OCSP response during session
resumption for both TLS 1.2 and 1.3. This behavior is somewhat
complicated for TLS 1.2 as SCTs are sent during the server hello,
so they override what is saved in ClientSessionState. It is likely
that if the server is sending a different set of SCTs there is probably
a reason for doing so, such as a log being retired, or SCT validation
requirements changing, so it makes sense to defer to the server in
that case.

Fixes #39075

Change-Id: I3c0fa2f69c6bf0247a447c48a1b4c733a882a233
Reviewed-on: https://go-review.googlesource.com/c/go/+/234237
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* crypto/tls: fix DialContext docs

Change-Id: I58e3febbf63049bebb4f8ed8893288183c8aaccd
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* crypto/tls: expand the ConnectionState docs

Fixes #37572

Change-Id: I493392f535a979ee16609861041da2ecfe21cf77
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* crypto/tls: replace VerifyPeerCertificate example with VerifyConnection

Look at how much better it is!

Updates #36736

Change-Id: I53a314a103a42dd869c05823fa50f37d70f9d283
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* crypto/tls: create certs w/o KeyEncipherment KU for non-RSA keys in generate_cert.go

Summary

The crypto/tls/generate_cert.go utility should only set the template
x509.Certificate's KeyUsage field to a value with the
x509.KeyUsageKeyEncipherment bits set when the certificate subject
public key is an RSA public key, not an ECDSA or ED25519 public key.

Background

RFC 5480 describes the usage of ECDSA elliptic curve subject keys with
X.509. Unfortunately while Section 3 "Key Usages Bits" indicates which
key usage bits MAY be used with a certificate that indicates
id-ecPublicKey in the SubjectPublicKeyInfo field it doesn't provide
guidance on which usages should *not* be included (e.g. the
keyEncipherment bit, which is particular to RSA key exchange). The same
problem is present in RFC 8410 Section 5 describing Key Usage Bits for
ED25519 elliptic curve subject keys.

There's an update to RFC 5480 in last call stage within the IETF LAMPS
WG, draft-ietf-lamps-5480-ku-clarifications-00. This update is meant
to clarify the allowed Key Usages extension values for certificates with
ECDSA subject public keys by adding:

> If the keyUsage extension is present in a certificate that indicates
> id-ecPublicKey as algorithm of AlgorithmIdentifier [RFC2986] in
> SubjectPublicKeyInfo, then following values MUST NOT be present:
>
> keyEncipherment; and
> dataEncipherment.

I don't believe there is an update for RFC 8410 in the works but I
suspect it will be clarified similarly in the future.

This commit updates generate_cert.go to ensure when the certificate
public key is ECDSA or ED25519 the generated certificate has the
x509.Certificate.KeyUsage field set to a value that doesn't include KUs
specific to RSA. For ECDSA keys this will adhere to the updated RFC 5480
language.

Fixes #36499

Change-Id: Ib1b0757c039b7fe97fc6d1e826fe6b88856c1964
GitHub-Last-Rev: a8f34fb33dde90e09b6f9a27b2598a82b3023abb
GitHub-Pull-Request: golang/go#36500
Reviewed-on: https://go-review.googlesource.com/c/go/+/214337
Reviewed-by: Filippo Valsorda <filippo@golang.org>
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* crypto/tls: relax the docs of InsecureSkipVerify

Fixes #39074

Change-Id: I72ec95f4b190253bb82d52a03a769b0399170b93
Reviewed-on: https://go-review.googlesource.com/c/go/+/239746
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto: fix PKCS space in docs

Change-Id: Iee53acb963a889410f8c6daaa9a7841f1b12c6fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/241497
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* crypto/tls: replace errClosed with net.ErrClosed

CL 250357 exported net.ErrClosed to allow more reliable detection
of closed network connection errors.  Use that error in crypto/tls
as well.

The error message is changed from "tls: use of closed connection"
to "use of closed network connection", so the code that detected such
errors by looking for that text in the error message will need to be
updated to use errors.Is(err, net.ErrClosed) instead.

Fixes #41066

Change-Id: Ic05c0ed6a4f57af2a0302d53b00851a59200be2e
Reviewed-on: https://go-review.googlesource.com/c/go/+/256897
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* crypto/tls: make config.Clone return nil if the source is nil

Fixes #40565

Change-Id: I13a67be193f8cd68df02b8729529e627a73d364b
GitHub-Last-Rev: b03d2c04fd88db909b40dfd7bd08fe13d8994ab9
GitHub-Pull-Request: golang/go#40566
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* crypto/tls: fix TestLinkerGC test

A test that checks if "tls.(*Conn)" appears in any symbol's name.
tls.Conn is a type, so the string "tls.(*Conn)" can only appear
in the name of a method of Conn. But the test code doesn't use
any of the methods. Not sure why this needs to be live. In
particular, the linker is now able to prune all methods of Conn.
Remove this requirement. In fact, just drop the only_conn test
case, as simply allocating a type doesn't necessarily bring
anything live.

Change-Id: I754291b75d38e1465b5291b4dea20806615d21b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/257973
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* crypto/tls: fix typo in spelling of permanentError

Change-Id: I819c121ff388460ec348af773ef94b44416a2ea9
GitHub-Last-Rev: 98dd8fb25cecb73e88d107e0a35e3e63a53dfd09
GitHub-Pull-Request: golang/go#41785
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* all: update references to symbols moved from io/ioutil to io

The old ioutil references are still valid, but update our code
to reflect best practices and get used to the new locations.

Code compiled with the bootstrap toolchain
(cmd/asm, cmd/dist, cmd/compile, debug/elf)
must remain Go 1.4-compatible and is excluded.
Also excluded vendored code.

For #41190.

Change-Id: I6d86f2bf7bc37a9d904b6cee3fe0c7af6d94d5b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/263142
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* crypto/tls: add no-shared to openssl build instructions

This prevents the custom-built version of openssl prefering the system
libraries over the ones compiled with the specified (weak crypto)
options necessary to generate the updates. This difference can lead to
confusing failures when updating the tests.

Fixes #31809

Change-Id: I2dd257f3121d6c6c62c6aeba52e1c74046b3c584
GitHub-Last-Rev: 6d4eeafadf0b4671b7e17c6810f1a66a9fda7d3c
GitHub-Pull-Request: golang/go#41630
Reviewed-on: https://go-review.googlesource.com/c/go/+/257517
Trust: Emmanuel Odeke <emm.odeke@gmail.com>
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* crypto/tls: document the ClientAuthType consts

Fixes #34023

Change-Id: Ib7552a8873a79a91e8d971f906c6d7283da7a80c
Reviewed-on: https://go-review.googlesource.com/c/go/+/264027
Trust: Roland Shoemaker <roland@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: set Deadline before sending close notify alert

This change also documents the need to set a Deadline before
calling Read or Write.

Fixes #31224

Change-Id: I89d6fe3ecb0a0076b4c61765f61c88056f951406
Reviewed-on: https://go-review.googlesource.com/c/go/+/266037
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* crypto/tls: pool Conn's outBuf to reduce memory cost of idle connections

Derived from CL 263277, which includes benchmarks.

Fixes #42035

Co-authored-by: Filippo Valsorda <filippo@golang.org>
Change-Id: I5f28673f95d4568b7d13dbc20e9d4b48d481a93d
Reviewed-on: https://go-review.googlesource.com/c/go/+/267957
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* crypto/tls: don't use CN in BuildNameToCertificate if SANs are present

Change-Id: I18d5b9fc392a6a52fbdd240254d6d9db838073a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/266540
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* crypto/tls: add HandshakeContext method to Conn

Adds the (*tls.Conn).HandshakeContext method. This allows
us to pass the context provided down the call stack to
eventually reach the tls.ClientHelloInfo and
tls.CertificateRequestInfo structs.
These contexts are exposed to the user as read-only via Context()
methods.

This allows users of (*tls.Config).GetCertificate and
(*tls.Config).GetClientCertificate to use the context for
request scoped parameters and cancellation.

Replace uses of (*tls.Conn).Handshake with (*tls.Conn).HandshakeContext
where appropriate, to propagate existing contexts.

Fixes #32406

Change-Id: I33c228904fe82dcf57683b63627497d3eb841ff2
Reviewed-on: https://go-review.googlesource.com/c/go/+/246338
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* crypto/tls: drop macFunction abstraction

Since we dropped SSLv3, there is only one MAC scheme, and it doesn't
need any state beyond a keyed HMAC, so we can replace the macFunction
with the hash.Hash it wraps.

Pointed out by mtp@.

Change-Id: I5545be0e6ccb34a3055fad7f6cb5f628ff748e9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/251859
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* crypto/tls: ensure the server picked an advertised ALPN protocol

This is a SHALL in RFC 7301, Section 3.2.

Also some more cleanup after NPN, which worked the other way around
(with the possibility that the client could pick a protocol the server
did not suggest).

Change-Id: I83cc43ca1b3c686dfece8315436441c077065d82
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* crypto/tls: de-prioritize AES-GCM ciphers when lacking hardware support

When either the server or client are lacking hardware support for
AES-GCM ciphers, indicated by the server lacking the relevant
instructions and by the client not putting AES-GCM ciphers at the top
of its preference list, reorder the preference list to de-prioritize
AES-GCM based ciphers when they are adjacent to other AEAD ciphers.

Also updates a number of recorded openssl TLS tests which previously
only specified TLS 1.2 cipher preferences (using -cipher), but not
TLS 1.3 cipher preferences (using -ciphersuites), to specify both
preferences, making these tests more predictable.

Fixes #41181.

Change-Id: Ied896c96c095481e755aaff9ff0746fb4cb9568e
Reviewed-on: https://go-review.googlesource.com/c/go/+/262857
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* all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp

As part of #42026, these helpers from io/ioutil were moved to os.
(ioutil.TempFile and TempDir became os.CreateTemp and MkdirTemp.)

Update the Go tree to use the preferred names.

As usual, code compiled with the Go 1.4 bootstrap toolchain
and code vendored from other sources is excluded.

ReadDir changes are in a separate CL, because they are not a
simple search and replace.

For #42026.

Change-Id: If318df0216d57e95ea0c4093b89f65e5b0ababb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/266365
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* crypto/tls: revert "add HandshakeContext method to Conn"

This reverts CL 246338.

Reason for revert: waiting for 1.17 release cycle

Updates #32406

Change-Id: I074379039041e086c62271d689b4b7f442281663
Reviewed-on: https://go-review.googlesource.com/c/go/+/269697
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* all: go fmt std cmd (but revert vendor)

Make all our package sources use Go 1.17 gofmt format
(adding //go:build lines).

Part of //go:build change (#41184).
See https://golang.org/design/draft-gobuild

Change-Id: Ia0534360e4957e58cd9a18429c39d0e32a6addb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/294430
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* docs: fix spelling

Change-Id: Ib689e5793d9cb372e759c4f34af71f004010c822
GitHub-Last-Rev: d63798388e5dcccb984689b0ae39b87453b97393
GitHub-Pull-Request: golang/go#44259
Reviewed-on: https://go-review.googlesource.com/c/go/+/291949
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* docs: clarify when APIs use context.Background.

The Go standard library retrofitted context support onto existing APIs
using context.Background and later offered variants that directly
supported user-defined context value specification. This commit makes
that behavior clear in documentation and suggests context-aware
alternatives if the user is looking for one.

An example motivation is supporting code for use in systems that expect
APIs to be cancelable for lifecycle correctness or load
shedding/management reasons, as alluded to in
https://blog.golang.org/context-and-structs.

Updates #44143

Change-Id: I2d7f954ddf9b48264d5ebc8d0007058ff9bddf14
Reviewed-on: https://go-review.googlesource.com/c/go/+/296152
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* all: remove duplicate words

Change-Id: Ib0469232a2b69a869e58d5d24990ad74ac96ea56
GitHub-Last-Rev: eb38e049ee1e773392ff3747e1eb2af20dd50dcd
GitHub-Pull-Request: golang/go#44805
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* crypto/tls: add HandshakeContext method to Conn

Adds the (*tls.Conn).HandshakeContext method. This allows
us to pass the context provided down the call stack to
eventually reach the tls.ClientHelloInfo and
tls.CertificateRequestInfo structs.
These contexts are exposed to the user as read-only via Context()
methods.

This allows users of (*tls.Config).GetCertificate and
(*tls.Config).GetClientCertificate to use the context for
request scoped parameters and cancellation.

Replace uses of (*tls.Conn).Handshake with (*tls.Conn).HandshakeContext
where appropriate, to propagate existing contexts.

Fixes #32406

Change-Id: I259939c744bdc9b805bf51a845a8bc462c042483
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* crypto/tls: remove flaky cancellation test

This will be reintroduced again once the source of the
flakiness has been determined and fixed.

Fixes #45084

Change-Id: I6677b27fcd71e8c9bb8edbe8e3be70e5a271ebd3
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* all: fix spellings

This follows the spelling choices that the Go project has made for English words.
https://github.com/golang/go/wiki/Spelling

Change-Id: Ie7c586d2cf23020cb492cfff58c0831d2d8d3a78
GitHub-Last-Rev: e16a32cd225a275f73d236bcb33703986d110ded
GitHub-Pull-Request: golang/go#45442
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* crypto/tls: fix flaky handshake cancellation tests

Simplified both tests significantly by removing logic for writing
the client/server side messages. The flake was likely because of a
race between the closing of the local pipe from inside the test
and closing of the pipe from within the handshakeContext goroutine.
Wait to close the local pipe in the test until after the test
has finished running.

Fixes #45106
Fixes #45299

Change-Id: If7ca75aeff7df70cda03c934fa9d8513276d465d
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* crypto/tls: enforce ALPN overlap when negotiated on both sides

During the TLS handshake if the server doesn't support any of the
application protocols requested by the client, send the
no_application_protocol alert and abort the handshake on the server
side. This enforces the requirements of RFC 7301.

Change-Id: Iced2bb5c6efc607497de1c40ee3de9c2b393fa5d
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* crypto/tls: make cipher suite preference ordering automatic

We now have a (well, two, depending on AES hardware support) universal
cipher suite preference order, based on their security and performance.
Peer and application lists are now treated as filters (and AES hardware
support hints) that are applied to this universal order.

This removes a complex and nuanced decision from the application's
responsibilities, one which we are better equipped to make and which
applications usually don't need to have an opinion about. It also lets
us worry less about what suites we support or enable, because we can be
confident that bad ones won't be selected over good ones.

This also moves 3DES suites to InsecureCipherSuites(), even if they are
not disabled by default. Just because we can keep them as a last resort
it doesn't mean they are secure. Thankfully we had not promised that
Insecure means disabled by default.

Notable test changes:

  - TestCipherSuiteCertPreferenceECDSA was testing that we'd pick the
    right certificate regardless of CipherSuite ordering, which is now
    completely ignored, as tested by TestCipherSuitePreference. Removed.

  - The openssl command of TestHandshakeServerExportKeyingMaterial was
    broken for TLS 1.0 in CL 262857, but its golden file was not
    regenerated, so the test kept passing. It now broke because the
    selected suite from the ones in the golden file changed.

  - In TestAESCipherReordering, "server strongly prefers AES-GCM" is
    removed because there is no way for a server to express a strong
    preference anymore; "client prefers AES-GCM and AES-CBC over ChaCha"
    switched to ChaCha20 when the server lacks AES hardware; and finally
    "client supports multiple AES-GCM" changed to always prefer AES-128
    per the universal preference list.

    * this is going back on an explicit decision from CL 262857, and
      while that client order is weird and does suggest a strong dislike
      for ChaCha20, we have a strong dislike for software AES, so it
      didn't feel worth making the logic more complex

  - All Client-* golden files had to be regenerated because the
    ClientHello cipher suites have changed.
    (Even when Config.CipherSuites was limited to one suite, the TLS 1.3
    default order changed.)

Fixes #45430
Fixes #41476 (as 3DES is now always the last resort)

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* crypto/tls: fix typo in Config.NextProtos docs

Change-Id: I916df584859595067e5e86c35607869397dbbd8c
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* crypto/tls: let HTTP/1.1 clients connect to servers with NextProtos "h2"

Fixes #46310

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* crypto/tls: test key type when casting

When casting the certificate public key in generateClientKeyExchange,
check the type is appropriate. This prevents a panic when a server
agrees to a RSA based key exchange, but then sends an ECDSA (or
other) certificate.

Fixes #47143
Fixes CVE-2021-34558

Thanks to Imre Rad for reporting this issue.

Change-Id: Iabccacca6052769a605cccefa1216a9f7b7f6aea
Reviewed-on: 1116723
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* crypto/tls: fix typo in PreferServerCipherSuites comment

Fixing a typo, Deprected -> Deprecated.

Change-Id: Ie0ccc9a57ae6a935b4f67154ac097dba4c3832ec
GitHub-Last-Rev: 57337cc1bfa771111f229e7b899fdfdad3b1655e
GitHub-Pull-Request: golang/go#47745
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* [dev.boringcrypto] crypto/tls: use correct config in TestBoringClientHello

The existing implementation sets the ClientConfig to specific values to
ch…

* Fix all conflicts and more (see description)

- Fixed all merge conflicts introduced by the previous commit.
- Updated many `marshal()` functions to return `[]byte. error` in alignment with the updated upstream.
- Updated `readServerCertificate()` function as necessary to continue support compressed certificates.

* fix: clear/revise comments

* fix: clear comments

---------

Co-authored-by: Russ Cox <rsc@golang.org>
Co-authored-by: Filippo Valsorda <filippo@golang.org>
Co-authored-by: Filippo Valsorda <hi@filippo.io>
Co-authored-by: Katie Hockman <katie@golang.org>
Co-authored-by: Ainar Garipov <gugl.zadolbal@gmail.com>
Co-authored-by: Brad Fitzpatrick <bradfitz@golang.org>
Co-authored-by: fenos <fabri.feno@gmail.com>
Co-authored-by: Bryan C. Mills <bcmills@google.com>
Co-authored-by: Josh Bleecher Snyder <josharian@gmail.com>
Co-authored-by: Olivier Poitrey <rs@netflix.com>
Co-authored-by: Ville Skyttä <ville.skytta@iki.fi>
Co-authored-by: Alex Harford <alex.harford@saucelabs.com>
Co-authored-by: Johan Jansson <johan.jansson@iki.fi>
Co-authored-by: Ziheng Liu <lzhfromustc@gmail.com>
Co-authored-by: Chris Le Roy <brompwnie@users.noreply.github.com>
Co-authored-by: Brad Fitzpatrick <brad@danga.com>
Co-authored-by: Dmitri Shuralyov <dmitshur@golang.org>
Co-authored-by: Roland Shoemaker <rolandshoemaker@gmail.com>
Co-authored-by: Daniel <cpu@letsencrypt.org>
Co-authored-by: Chen.Zhidong <njutczd@gmail.com>
Co-authored-by: Cherry Zhang <cherryyz@google.com>
Co-authored-by: Luca Spiller <luca@stackednotion.com>
Co-authored-by: Thom Wiggers <thom@thomwiggers.nl>
Co-authored-by: cch123 <buaa.cch@gmail.com>
Co-authored-by: Johan Brandhorst <johan.brandhorst@gmail.com>
Co-authored-by: Roland Shoemaker <roland@golang.org>
Co-authored-by: John Bampton <jbampton@gmail.com>
Co-authored-by: Matt T. Proud <matt.proud@gmail.com>
Co-authored-by: Naman Gera <namangera15@gmail.com>
Co-authored-by: vinckr <vincent@ory.sh>
Co-authored-by: Sofía Celi <cherenkovd69@gmail.com>
Co-authored-by: Watson Ladd <watson@cloudflare.com>
Co-authored-by: Agniva De Sarker <agnivade@yahoo.co.in>
Co-authored-by: Heschi Kreinick <heschi@google.com>
Co-authored-by: Chressie Himpel <chressie@google.com>
Co-authored-by: Dan Kortschak <dan@kortschak.io>
Co-authored-by: Nicolas Hillegeer <aktau@google.com>
Co-authored-by: Ian Lance Taylor <iant@golang.org>
Co-authored-by: Lasse Folger <lassefolger@google.com>
Co-authored-by: Daniel Martí <mvdan@mvdan.cc>
Co-authored-by: David Taylor <tinystatemachine@gmail.com>
Co-authored-by: Tatiana Bradley <tatiana@golang.org>
2023-03-09 15:06:27 -07:00
Roland Shoemaker
ba1a41d66f crypto/tls: replace all usages of BytesOrPanic
Message marshalling makes use of BytesOrPanic a lot, under the
assumption that it will never panic. This assumption was incorrect, and
specifically crafted handshakes could trigger panics. Rather than just
surgically replacing the usages of BytesOrPanic in paths that could
panic, replace all usages of it with proper error returns in case there
are other ways of triggering panics which we didn't find.

In one specific case, the tree routed by expandLabel, we replace the
usage of BytesOrPanic, but retain a panic. This function already
explicitly panicked elsewhere, and returning an error from it becomes
rather painful because it requires changing a large number of APIs.
The marshalling is unlikely to ever panic, as the inputs are all either
fixed length, or already limited to the sizes required. If it were to
panic, it'd likely only be during development. A close inspection shows
no paths for a user to cause a panic currently.

This patches ends up being rather large, since it requires routing
errors back through functions which previously had no error returns.
Where possible I've tried to use helpers that reduce the verbosity
of frequently repeated stanzas, and to make the diffs as minimal as
possible.

Thanks to Marten Seemann for reporting this issue.

Fixes #58001
Fixes CVE-2022-41724

Change-Id: Ieb55867ef0a3e1e867b33f09421932510cb58851
Reviewed-on: 1679436
Reviewed-by: Julie Qiu <julieqiu@google.com>
TryBot-Result: Security TryBots <security-trybots@go-security-trybots.iam.gserviceaccount.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/468125
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
2023-02-14 16:52:30 +00:00
Gaukas Wang
fb99df2a2e
refactor+feat: Custom Client Handshake + Implement ALPS extension (#142)
* refactor: split `CompressCertExtension` changes

- Split most of changes for `CompressCertExtension` made to `crypto/tls` files out and moved them to `u_` files.
- Edited some `crypto/tls` files to achieve better programmability for uTLS.
- Minor styling fix.

* feat: implement ALPS Extension draft

- Made necessary modifications to existing types to support ALPS.
- Ported `ApplicationSettingsExtension` implementation from `ulixee/utls` by @blakebyrnes with some adaptation.

Co-Authored-By: Blake Byrnes <115056+blakebyrnes@users.noreply.github.com>

* feat: utlsFakeCustomExtension in ALPS

- Introducing `utlsFakeCustomExtension` to enable implementation for custom extensions to be exchanged via ALPS.
- currently it doesn't do anything.

Co-Authored-By: Blake Byrnes <115056+blakebyrnes@users.noreply.github.com>

* fix: magic number in `StatusRequestV2Extension`

- Fixed magic number `17` in `StatusRequestV2Extension` with pre-defined enum `extensionStatusRequestV2`.

Co-authored-by: Blake Byrnes <115056+blakebyrnes@users.noreply.github.com>
2022-11-17 14:04:29 -07:00
Gaukas Wang
87abfdb24a
Sync upstream: go 1.19.2 (#130)
* Merging upstream changes into sync branch (#6)

* [dev.boringcrypto] crypto/sha1,sha256,sha512: use BoringCrypto

Change-Id: I80a764971b41f75c3b699797bfed71f509e3407d
Reviewed-on: https://go-review.googlesource.com/55474
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/aes: use BoringCrypto

Change-Id: If83fdeac31f65aba818bbc7edd2f215b16814021
Reviewed-on: https://go-review.googlesource.com/55476
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls: use TLS-specific AES-GCM mode if available

Change-Id: Ide00c40c0ca8d486f3bd8968e1d301c8b0ed6d05
Reviewed-on: https://go-review.googlesource.com/56011
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls/fipsonly: new package to force FIPS-allowed TLS settings

Change-Id: I3268cab2de8aed9e2424e9c3bc7667083bc5e1ce
Reviewed-on: https://go-review.googlesource.com/65250
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls: restore AES-GCM priority when BoringCrypto is enabled

This patch used to be in crypto/internal/cipherhw.AESGCMSupport which
was removed from the tree. It was meant and documented to affect only
crypto/tls, so move the logic there.

Change-Id: I36ed4f08a5fe2abaab18907910899ae0297d1611
Reviewed-on: https://go-review.googlesource.com/114816
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* [dev.boringcrypto] crypto/tls: test for TLS 1.3 to be disabled in FIPS mode

Change-Id: I32b3e29a3e34f20cccc51666905fd36744ef00b2
Reviewed-on: https://go-review.googlesource.com/c/149602
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: add support for Ed25519 certificates in TLS 1.2 and 1.3

Support for Ed25519 certificates was added in CL 175478, this wires them
up into the TLS stack according to RFC 8422 (TLS 1.2) and RFC 8446 (TLS 1.3).

RFC 8422 also specifies support for TLS 1.0 and 1.1, and I initially
implemented that, but even OpenSSL doesn't take the complexity, so I
just dropped it. It would have required keeping a buffer of the
handshake transcript in order to do the direct Ed25519 signatures. We
effectively need to support TLS 1.2 because it shares ClientHello
signature algorithms with TLS 1.3.

While at it, reordered the advertised signature algorithms in the rough
order we would want to use them, also based on what curves have fast
constant-time implementations.

Client and client auth tests changed because of the change in advertised
signature algorithms in ClientHello and CertificateRequest.

Fixes #25355

Change-Id: I9fdd839afde4fd6b13fcbc5cc7017fd8c35085ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/177698
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: fix TestVerifyHostnameResumed

In TLS 1.3 session tickets are delivered after the handshake, and it
looks like now the Google servers wait until the first flight of data to
send them (or our timeout is too low). Cause some data to be sent so we
can avoid the guessing game.

Fixes #32090

Change-Id: I54af4acb3a89cc70c9e14a5dfe18a44c29a841a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/177877
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* all: remove PEM-encoded private keys from tests

Gerrit is complaining about pushes that affect these files
and forcing people to use -o nokeycheck, which defeats
the point of the check. Hide the keys from this kind of scan
by marking them explicitly as testing keys.

This is a little annoying but better than training everyone
who ever edits one of these test files to reflexively override
the Gerrit check.

The only remaining keys explicitly marked as private instead
of testing are in examples, and there's not much to do
about those. Hopefully they are not edited as much.

Change-Id: I4431592b5266cb39fe6a80b40e742d97da803a0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/178178
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* all: shorten some tests

Shorten some of the longest tests that run during all.bash.
Removes 7r 50u 21s from all.bash.

After this change, all.bash is under 5 minutes again on my laptop.

For #26473.

Change-Id: Ie0460aa935808d65460408feaed210fbaa1d5d79
Reviewed-on: https://go-review.googlesource.com/c/go/+/177559
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

* [dev.boringcrypto] crypto: move crypto/internal/boring imports to reduce merge conflicts

As suggested by dmitshur@, move them to their own block so they don't
conflict with changes in the upstream imports.

Change-Id: Id46fb7c766066c406023b0355f4c3c860166f0fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/181277
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

* crypto/tls: disable RSA-PSS in TLS 1.2 again

Signing with RSA-PSS can uncover faulty crypto.Signer implementations,
and it can fail for (broken) small keys. We'll have to take that
breakage eventually, but it would be nice for it to be opt-out at first.

TLS 1.3 requires RSA-PSS and is opt-out in Go 1.13. Instead of making a
TLS 1.3 opt-out influence a TLS 1.2 behavior, let's wait to add RSA-PSS
to TLS 1.2 until TLS 1.3 is on without opt-out.

Note that since the Client Hello is sent before a protocol version is
selected, we have to advertise RSA-PSS there to support TLS 1.3.
That means that we still support RSA-PSS on the client in TLS 1.2 for
verifying server certificates, which is fine, as all issues arise on the
signing side. We have to be careful not to pick (or consider available)
RSA-PSS on the client for client certificates, though.

We'd expect tests to change only in TLS 1.2:

    * the server won't pick PSS to sign the key exchange
      (Server-TLSv12-* w/ RSA, TestHandshakeServerRSAPSS);
    * the server won't advertise PSS in CertificateRequest
      (Server-TLSv12-ClientAuthRequested*, TestClientAuth);
    * and the client won't pick PSS for its CertificateVerify
      (Client-TLSv12-ClientCert-RSA-*, TestHandshakeClientCertRSAPSS,
      Client-TLSv12-Renegotiate* because "R" requests a client cert).

Client-TLSv13-ClientCert-RSA-RSAPSS was updated because of a fix in the test.

This effectively reverts 88343530720a52c96b21f2bd5488c8fb607605d7.

Testing was made more complex by the undocumented semantics of OpenSSL's
-[client_]sigalgs (see openssl/openssl#9172).

Updates #32425

Change-Id: Iaddeb2df1f5c75cd090cc8321df2ac8e8e7db349
Reviewed-on: https://go-review.googlesource.com/c/go/+/182339
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: move shared code and resources to handshake_test.go

Removed cross-dependencies between handshake_server_test.go and
handshake_client_test.go; moved all initialization to TestMain; replaced
SSLKEYLOGFILE environment variable with -keylog flag.

Change-Id: Ida6712daa44e01a2c00658e8a1896087ee88bcb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/183057
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: reject low-order Curve25519 points

The RFC recommends checking the X25519 output to ensure it's not the
zero value, to guard against peers trying to remove contributory
behavior.

In TLS there should be enough transcript involvement to mitigate any
attack, and the RSA key exchange would suffer from the same issues by
design, so not proposing a backport.

See #31846

Change-Id: I8e657f8ee8aa72c3f8ca3b124555202638c53f5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/183039
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: deflake localPipe in tests

The localPipe implementation assumes that every successful net.Dial
results in exactly one successful listener.Accept. I don't believe this
is guaranteed by essentially any operating system. For this test, we're
seeing flakes on dragonfly (#29583).

But see also #19519, flakes due to the same assumption on FreeBSD
and macOS in package net's own tests.

This CL rewrites localPipe to try a few times to get a matching pair
of connections on the dial and accept side.

Fixes #29583.

Change-Id: Idb045b18c404eae457f091df20456c5ae879a291
Reviewed-on: https://go-review.googlesource.com/c/go/+/184157
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

* crypto/tls: remove TestVerifyHostnameResumed

Session resumption is not a reliable TLS behavior: the server can decide
to reject a session ticket for a number of reasons, or no reason at all.
This makes this non-hermetic test extremely brittle.

It's currently broken on the builders for both TLS 1.2 and TLS 1.3, and
I could reproduce the issue for TLS 1.3 only. As I was debugging it, it
started passing entirely on my machine.

In practice, it doesn't get us any coverage as resumption is already
tested with the recorded exchange tests, and TestVerifyHostname still
provides a smoke test checking that we can in fact talk TLS.

Fixes #32978

Change-Id: I63505e22ff7704f25ad700d46e4ff14850ba5d3c
Reviewed-on: https://go-review.googlesource.com/c/go/+/186239
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

* crypto/tls: deprecate SSLv3 support

Updates #32716

Change-Id: Ia0c03918e8f2da4d9824c49c6d4cfca1b0787b0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/184102
Reviewed-by: Andrew Bonventre <andybons@golang.org>

* crypto/tls: make SSLv3 again disabled by default

It was mistakenly re-enabled in CL 146217.

Fixes #33837

Change-Id: I8c0e1787114c6232df5888e51e355906622295bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/191877
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

* crypto/tls: remove SSLv3 support

SSLv3 has been irreparably broken since the POODLE attack 5 years ago
and RFC 7568 (f.k.a. draft-ietf-tls-sslv3-diediedie) prohibits its use
in no uncertain terms.

As announced in the Go 1.13 release notes, remove support for it
entirely in Go 1.14.

Updates #32716

Change-Id: Id653557961d8f75f484a01e6afd2e104a4ccceaf
Reviewed-on: https://go-review.googlesource.com/c/go/+/191976
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: remove TLS 1.3 opt-out

Fixes #30055

Change-Id: If757c43b52fc7bf62b0afb1c720615329fb5569d
Reviewed-on: https://go-review.googlesource.com/c/go/+/191999
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* all: fix typos

Use the following (suboptimal) script to obtain a list of possible
typos:

  #!/usr/bin/env sh

  set -x

  git ls-files |\
    grep -e '\.\(c\|cc\|go\)$' |\
    xargs -n 1\
    awk\
    '/\/\// { gsub(/.*\/\//, ""); print; } /\/\*/, /\*\// { gsub(/.*\/\*/, ""); gsub(/\*\/.*/, ""); }' |\
    hunspell -d en_US -l |\
    grep '^[[:upper:]]\{0,1\}[[:lower:]]\{1,\}$' |\
    grep -v -e '^.\{1,4\}$' -e '^.\{16,\}$' |\
    sort -f |\
    uniq -c |\
    awk '$1 == 1 { print $2; }'

Then, go through the results manually and fix the most obvious typos in
the non-vendored code.

Change-Id: I3cb5830a176850e1a0584b8a40b47bde7b260eae
Reviewed-on: https://go-review.googlesource.com/c/go/+/193848
Reviewed-by: Robert Griesemer <gri@golang.org>

* crypto/tls: remove NPN support

RELNOTE=yes

Fixes #28362

Change-Id: I43813c0c17bbe6c4cbb4d1f121518c434b3f5aa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/174329
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* crypto/tls: consistently use %v for error formatting

We should keep a consistent way of formatting errors
in this file.

Fixes #34848

Change-Id: Ibb75908504f381fccab0281a42e788ef8c716b6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/200679
Run-TryBot: Johan Brandhorst <johan.brandhorst@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>

* crypto/tls: retry net.Dial flakes on Dragonfly

localPipe currently flakes in various crypto/tls tests. Since that
function doesn't seem to flake anywhere else, I suspect a kernel bug.

To make the test less flaky, retry the Dial if we suspect that it is
affected. (Worst case, we delay the test by a few seconds before
erroring out as usual.)

Fixes #29583

Change-Id: I357990ffa316edb471bd7d46d6404fa0884da646
Reviewed-on: https://go-review.googlesource.com/c/go/+/202557
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: move a defer out of a loop

Rhys Hiltner noted in #14939 that this defer was
syntactically inside a loop, but was only ever

executed once. Now that defer in a loop
is significantly slower, pull this one out.

name                                    old time/op   new time/op   delta
Throughput/MaxPacket/1MB/TLSv12-8        3.94ms ± 8%   3.93ms ±13%    ~     (p=0.967 n=15+15)
Throughput/MaxPacket/1MB/TLSv13-8        4.33ms ± 3%   4.51ms ± 7%  +4.00%  (p=0.000 n=14+14)
Throughput/MaxPacket/2MB/TLSv12-8        6.80ms ± 6%   7.01ms ± 4%  +3.15%  (p=0.000 n=14+14)
Throughput/MaxPacket/2MB/TLSv13-8        6.96ms ± 5%   6.80ms ± 5%  -2.43%  (p=0.006 n=15+14)
Throughput/MaxPacket/4MB/TLSv12-8        12.0ms ± 3%   11.7ms ± 2%  -2.88%  (p=0.000 n=15+13)
Throughput/MaxPacket/4MB/TLSv13-8        12.1ms ± 3%   11.7ms ± 2%  -3.54%  (p=0.000 n=13+13)
Throughput/MaxPacket/8MB/TLSv12-8        22.2ms ± 3%   21.6ms ± 3%  -2.97%  (p=0.000 n=15+15)
Throughput/MaxPacket/8MB/TLSv13-8        22.5ms ± 5%   22.0ms ± 3%  -2.34%  (p=0.004 n=15+15)
Throughput/MaxPacket/16MB/TLSv12-8       42.4ms ± 3%   41.3ms ± 3%  -2.49%  (p=0.001 n=15+15)
Throughput/MaxPacket/16MB/TLSv13-8       43.4ms ± 5%   42.3ms ± 3%  -2.33%  (p=0.006 n=15+14)
Throughput/MaxPacket/32MB/TLSv12-8       83.1ms ± 4%   80.6ms ± 3%  -2.98%  (p=0.000 n=15+15)
Throughput/MaxPacket/32MB/TLSv13-8       85.2ms ± 8%   82.6ms ± 4%  -3.02%  (p=0.005 n=15+15)
Throughput/MaxPacket/64MB/TLSv12-8        167ms ± 7%    158ms ± 2%  -5.21%  (p=0.000 n=15+15)
Throughput/MaxPacket/64MB/TLSv13-8        170ms ± 4%    162ms ± 3%  -4.83%  (p=0.000 n=15+15)
Throughput/DynamicPacket/1MB/TLSv12-8    4.13ms ± 7%   4.00ms ± 8%    ~     (p=0.061 n=15+15)
Throughput/DynamicPacket/1MB/TLSv13-8    4.72ms ± 6%   4.64ms ± 7%    ~     (p=0.377 n=14+15)
Throughput/DynamicPacket/2MB/TLSv12-8    7.29ms ± 7%   7.09ms ± 7%    ~     (p=0.070 n=15+14)
Throughput/DynamicPacket/2MB/TLSv13-8    7.18ms ± 5%   6.59ms ± 4%  -8.34%  (p=0.000 n=15+15)
Throughput/DynamicPacket/4MB/TLSv12-8    12.3ms ± 3%   11.9ms ± 4%  -3.31%  (p=0.000 n=15+14)
Throughput/DynamicPacket/4MB/TLSv13-8    12.2ms ± 4%   12.0ms ± 4%  -1.91%  (p=0.019 n=15+15)
Throughput/DynamicPacket/8MB/TLSv12-8    22.4ms ± 3%   21.9ms ± 3%  -2.18%  (p=0.000 n=15+15)
Throughput/DynamicPacket/8MB/TLSv13-8    22.7ms ± 3%   22.2ms ± 3%  -2.35%  (p=0.000 n=15+15)
Throughput/DynamicPacket/16MB/TLSv12-8   42.3ms ± 3%   42.1ms ± 3%    ~     (p=0.505 n=14+15)
Throughput/DynamicPacket/16MB/TLSv13-8   42.7ms ± 3%   43.3ms ± 7%    ~     (p=0.123 n=15+14)
Throughput/DynamicPacket/32MB/TLSv12-8   82.8ms ± 3%   81.9ms ± 3%    ~     (p=0.112 n=14+15)
Throughput/DynamicPacket/32MB/TLSv13-8   84.6ms ± 6%   83.9ms ± 4%    ~     (p=0.624 n=15+15)
Throughput/DynamicPacket/64MB/TLSv12-8    166ms ± 4%    163ms ± 6%    ~     (p=0.081 n=15+15)
Throughput/DynamicPacket/64MB/TLSv13-8    165ms ± 3%    168ms ± 3%  +1.56%  (p=0.029 n=15+15)

Change-Id: I22409b05afe761b8ed1912b15c67fc03f88d3d1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/203481
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: improve error messages for invalid certificates and signatures

Also, fix the alert value sent when a signature by a client certificate
is invalid in TLS 1.0-1.2.

Fixes #35190

Change-Id: I2ae1d5593dfd5ee2b4d979664aec74aab4a8a704
Reviewed-on: https://go-review.googlesource.com/c/go/+/204157
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: send ec_points_format extension in ServerHello

Follow the recommandation from RFC 8422, section 5.1.2 of sending back the
ec_points_format extension when requested by the client. This is to fix
some clients declining the handshake if omitted.

Fixes #31943

Change-Id: I7b04dbac6f9af75cda094073defe081e1e9a295d
Reviewed-on: https://go-review.googlesource.com/c/go/+/176418
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Olivier Poitrey <rs@rhapsodyk.net>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

* crypto/tls: make -update only regenerate transcripts for failing tests

Change-Id: Ie68fd4fe2879e6b5417a1a4240971e3d837bf115
Reviewed-on: https://go-review.googlesource.com/c/go/+/204377
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Run-TryBot: Katie Hockman <katie@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
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* crypto/tls: add ExampleConfig_VerifyPeerCertificate

Setting InsecureSkipVerify and VerifyPeerCertificate is the recommended
way to customize and override certificate validation.

However, there is boilerplate involved and it usually requires first
reimplementing the default validation strategy to then customize it.
Provide an example that does the same thing as the default as a starting
point.

Examples of where we directed users to do something similar are in
issues #35467, #31791, #28754, #21971, and #24151.

Fixes #31792

Change-Id: Id033e9fa3cac9dff1f7be05c72dfb34b4f973fd4
Reviewed-on: https://go-review.googlesource.com/c/go/+/193620
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: refactor certificate and signature algorithm logic

This refactors a lot of the certificate support logic to make it cleaner
and reusable where possible. These changes will make the following CLs
much simpler.

In particular, the heavily overloaded pickSignatureAlgorithm is gone.
That function used to cover both signing and verifying side, would work
both for pre-signature_algorithms TLS 1.0/1.1 and TLS 1.2, and returned
sigalg, type and hash.

Now, TLS 1.0/1.1 and 1.2 are differentiated at the caller, as they have
effectively completely different logic. TLS 1.0/1.1 simply use
legacyTypeAndHashFromPublicKey as they employ a fixed hash function and
signature algorithm for each public key type. TLS 1.2 is instead routed
through selectSignatureScheme (on the signing side) or
isSupportedSignatureAlgorithm (on the verifying side) and
typeAndHashFromSignatureScheme, like TLS 1.3.

On the signing side, signatureSchemesForCertificate was already version
aware (for PKCS#1 v1.5 vs PSS support), so selectSignatureScheme just
had to learn the Section 7.4.1.4.1 defaults for a missing
signature_algorithms to replace pickSignatureAlgorithm.

On the verifying side, pickSignatureAlgorithm was also checking the
public key type, while isSupportedSignatureAlgorithm +
typeAndHashFromSignatureScheme are not, but that check was redundant
with the one in verifyHandshakeSignature.

There should be no major change in behavior so far. A few minor changes
came from the refactor: we now correctly require signature_algorithms in
TLS 1.3 when using a certificate; we won't use Ed25519 in TLS 1.2 if the
client didn't send signature_algorithms; and we don't send
ec_points_format in the ServerHello (a compatibility measure) if we are
not doing ECDHE anyway because there are no mutually supported curves.

The tests also got simpler because they test simpler functions. The
caller logic switching between TLS 1.0/1.1 and 1.2 is tested by the
transcript tests.

Updates #32426

Change-Id: Ice9dcaea78d204718f661f8d60efdb408ba41577
Reviewed-on: https://go-review.googlesource.com/c/go/+/205061
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: implement (*ClientHelloInfo).SupportsCertificate

We'll also use this function for a better selection logic from
Config.Certificates in a later CL.

Updates #32426

Change-Id: Ie239574d02eb7fd2cf025ec36721c8c7e082d0bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/205057
Reviewed-by: Katie Hockman <katie@golang.org>

* crypto/tls: implement (*CertificateRequestInfo).SupportsCertificate

Also, add Version to CertificateRequestInfo, as the semantics of
SignatureSchemes change based on version: the ECDSA SignatureSchemes are
only constrained to a specific curve in TLS 1.3.

Fixes #32426

Change-Id: I7a551bea864799e98118349ac2476162893d1ffd
Reviewed-on: https://go-review.googlesource.com/c/go/+/205058
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: select only compatible chains from Certificates

Now that we have a full implementation of the logic to check certificate
compatibility, we can let applications just list multiple chains in
Certificates (for example, an RSA and an ECDSA one) and choose the most
appropriate automatically.

NameToCertificate only maps each name to one chain, so simply deprecate
it, and while at it simplify its implementation by not stripping
trailing dots from the SNI (which is specified not to have any, see RFC
6066, Section 3) and by not supporting multi-level wildcards, which are
not a thing in the WebPKI (and in crypto/x509).

The performance of SupportsCertificate without Leaf is poor, but doesn't
affect current users. For now document that, and address it properly in
the next cycle. See #35504.

While cleaning up the Certificates/GetCertificate/GetConfigForClient
behavior, also support leaving Certificates/GetCertificate nil if
GetConfigForClient is set, and send unrecognized_name when there are no
available certificates.

Fixes #29139
Fixes #18377

Change-Id: I26604db48806fe4d608388e55da52f34b7ca4566
Reviewed-on: https://go-review.googlesource.com/c/go/+/205059
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* crypto/tls: implement Certificate.SupportedSignatureAlgorithms

This will let applications stop crypto/tls from using a certificate key
with an algorithm that is not supported by its crypto.Signer, like
hardware backed keys that can't do RSA-PSS.

Fixes #28660

Change-Id: I294cc06bddf813fff35c5107540c4a1788e1dace
Reviewed-on: https://go-review.googlesource.com/c/go/+/205062
Run-TryBot: Filippo Valsorda <filippo@golang.org>
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Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: re-enable RSA-PSS in TLS 1.2 again

TLS 1.3, which requires RSA-PSS, is now enabled without a GODEBUG
opt-out, and with the introduction of
Certificate.SupportedSignatureAlgorithms (#28660) there is a
programmatic way to avoid RSA-PSS (disable TLS 1.3 with MaxVersion and
use that field to specify only PKCS#1 v1.5 SignatureSchemes).

This effectively reverts 0b3a57b5374bba3fdf88258e2be4c8be65e6a5de,
although following CL 205061 all of the signing-side logic is
conveniently centralized in signatureSchemesForCertificate.

Fixes #32425

Change-Id: I7c9a8893bb5d518d86eae7db82612b9b2cd257d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/205063
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Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: add correct names for CHACHA20_POLY1305 cipher suite constants

The cipher suites were apparently renamed late in the standardization
process, and we picked up the legacy name. We can't remove the old
constants, but add correctly named ones.

Fixes #32061

Change-Id: I65ee25c12c10934391af88b76b18565da67453fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/205068
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Reviewed-by: Adam Langley <agl@golang.org>

* crypto/tls: add CipherSuites, InsecureCipherSuites and CipherSuiteName

Fixes #30325

Change-Id: I497110224bb73ecfcc4655698a794e7aa4a66925
Reviewed-on: https://go-review.googlesource.com/c/go/+/175517
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* crypto/tls: take key size into account in signature algorithm selection

Fixes #29793

Change-Id: I6e389d166c2d9a2ba8664a41f4b9569f2481b27f
Reviewed-on: https://go-review.googlesource.com/c/go/+/205177
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* crypto/tls: retry ETIMEDOUT flakes in localPipe on dragonfly

Fixes #29583

Change-Id: Ia89433bddd4c9f67ec1f0150b730cde8a7e973ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/206759
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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* src/vendor,crypto/tls: update to latest x/crypto and use new X25519 API

Change-Id: Icd5006e37861d892a5f3d4397c3826179c1b12ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/206657
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* all: fix a bunch of misspellings

Change-Id: I5b909df0fd048cd66c5a27fca1b06466d3bcaac7
GitHub-Last-Rev: 778c5d21311abee09a5fbda2e4005a5fd4cc3f9f
GitHub-Pull-Request: golang/go#35624
Reviewed-on: https://go-review.googlesource.com/c/go/+/207421
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* crypto/tls: remove leftover extensionNextProtoNeg constant

NPN was removed in CL 174329.

Change-Id: Ic63ad53e7e24872e28673d590727e0300f435619
Reviewed-on: https://go-review.googlesource.com/c/go/+/208224
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TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: fix a typo in TLS handshake comment

Fix a minor typo in the TLS handshake comment.

Change-Id: I0fd243e5440f6c77c97e844e6669a7974a2c8798
GitHub-Last-Rev: 21e91a1a48e8a9200e6fca89a988e1383ded7bb2
GitHub-Pull-Request: golang/go#36030
Reviewed-on: https://go-review.googlesource.com/c/go/+/210289
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

* crypto/tls: stop a timeout timer

I noticed this leak while writing CL 214977.

Change-Id: I7566952b8e4bc58939d23435aea86576fc58ddca
Reviewed-on: https://go-review.googlesource.com/c/go/+/214978
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* crypto/tls: clarify TLS 1.0/1.1 CertificateRequestInfo.SignatureSchemes

This CL should not change the logic at all, but it took me a while to
figure out why we use these specific SignatureSchemes, so reformulate
the comment.

Change-Id: If519a58264209e6575417be07668e92ead0e772f
Reviewed-on: https://go-review.googlesource.com/c/go/+/208225
Run-TryBot: Filippo Valsorda <filippo@golang.org>
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* crypto/tls: update ExampleDial with a valid root

When run as a separate program, the code in ExampleDial panicked due to
an expired certificate. Fixed this problem by replacing the expired
certificate with a valid one.

Also added a comment in the certificate to give a hint about why it
might fail in the future.

Fixes #35706

Change-Id: I3d300f7bccae050e4b73ded28b8029aa04b480bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/212601
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* crypto/tls: use new ecdsa.VerifyASN1 API

Change-Id: I2a233190bda78ca022ff4074b4553788847d7583
Reviewed-on: https://go-review.googlesource.com/c/go/+/220720
Run-TryBot: Katie Hockman <katie@golang.org>
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* all: fix incorrect channel and API usage in some unit tests

This CL changes some unit test functions, making sure that these tests (and goroutines spawned during test) won't block.
Since they are just test functions, I use one CL to fix them all. I hope this won't cause trouble to reviewers and can save time for us.
There are three main categories of incorrect logic fixed by this CL:
1. Use testing.Fatal()/Fatalf() in spawned goroutines, which is forbidden by Go's document.
2. Channels are used in such a way that, when errors or timeout happen, the test will be blocked and never return.
3. Channels are used in such a way that, when errors or timeout happen, the test can return but some spawned goroutines will be leaked, occupying resource until all other tests return and the process is killed.

Change-Id: I3df931ec380794a0cf1404e632c1dd57c65d63e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/219380
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* crypto/tls: add {SignatureScheme,CurveID,ClientAuthType}.String()

Fixes #35499

Change-Id: Ieb487782f389f6d80e8f68ee980e584d906cb4da
Reviewed-on: https://go-review.googlesource.com/c/go/+/208226
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* crypto/tls: update the MITM reference to "machine-in-the-middle"

Changing "man-in-the-middle" references to "machine-in-the-middle",
it's a more inclusive term and still aligns with the MITM acronym.

Change-Id: I81f954cff3d252433443f159ff9edaf59a28ab9d
GitHub-Last-Rev: 3e8f91424a207233b537984747ae90cbc1f03755
GitHub-Pull-Request: golang/go#37918
Reviewed-on: https://go-review.googlesource.com/c/go/+/223897
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* crypto/tls: add missing alert values

Fixes #35911

Change-Id: I093d25aa169963769b51c37d2481bce71bd0fd2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/226858
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* crypto/tls: failed tls.Conn.Write returns a permanent error

Fixes #29971

Change-Id: I2f1653640c88fafe0ec17a75dcf41d5896c4cb8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/227840
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* crypto/tls: help linker remove code when only Client or Server is used

This saves 166 KiB for a tls.Dial hello world program (5382441 to
5212356 to bytes), by permitting the linker to remove TLS server code.

Change-Id: I16610b836bb0802b7d84995ff881d79ec03b6a84
Reviewed-on: https://go-review.googlesource.com/c/go/+/228111
Reviewed-by: Ian Lance Taylor <iant@golang.org>

* crypto/tls: add Dialer

Fixes #18482

Change-Id: I99d65dc5d824c00093ea61e7445fc121314af87f
Reviewed-on: https://go-review.googlesource.com/c/go/+/214977
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

* math/big: add (*Int).FillBytes

Replaced almost every use of Bytes with FillBytes.

Note that the approved proposal was for

    func (*Int) FillBytes(buf []byte)

while this implements

    func (*Int) FillBytes(buf []byte) []byte

because the latter was far nicer to use in all callsites.

Fixes #35833

Change-Id: Ia912df123e5d79b763845312ea3d9a8051343c0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/230397
Reviewed-by: Robert Griesemer <gri@golang.org>

* crypto/tls: enforce TLS 1.3 (and TLS 1.2) downgrade protection checks

Fixes #37763

Change-Id: Ic6bcc9af0d164966f4ae31087998e5b546540038
Reviewed-on: https://go-review.googlesource.com/c/go/+/231038
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* crypto/tls: marshal sessionState using cryptobyte

Change-Id: I95a60b837e19d0c4bf45ea74baa5843a8244a186
Reviewed-on: https://go-review.googlesource.com/c/go/+/231218
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* crypto/tls: accept HelloRetryRequest messages with only a cookie

Clients have to reject any HelloRetryRequest message that doesn't lead
to a change in the ClientHello. Instead, we were rejecting any HRR that
didn't select an alternative group, even if it sent a cookie, which
would change the CH.

The good news is that I know of no TLS servers that use or need HRRs
exclusively for cookies (which are mostly useful in DTLS as a way to
verify the source address). The bad news is that we poisoned the
ecosystem as Go 1.12 to 1.14 will reject such HRRs. Oops, hopefully no
one needed this.

No tests because neither Go nor s_server support cookies. This would
presumably get covered once we integrate BoGo.

Fixes #30149

Change-Id: I760fb1ded81148ac3096cf201cbc1e941374b83d
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* crypto/tls: fix sessionState marshaling

Change-Id: I2910f322256c521dd03b1dc23d117defdcd0aa54
Reviewed-on: https://go-review.googlesource.com/c/go/+/232662
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* crypto/tls: rotate session keys in older TLS versions

Also encode the certificates in a way that's more
consistent with TLS 1.3 (with a 24 byte length prefix).

Note that this will have an additional performance cost
requiring clients to do a full handshake every 7 days
where previously they were able to use the same ticket
indefinitely.

Updates #25256

Change-Id: Ic4d1ba0d92773c490b33b5f6c1320d557cc7347d
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* crypto/tls: rotate session ticket keys

Automatically rotate session ticket keys for servers
that don't already have sessionTicketKeys and that
haven't called SetSessionTicketKeys.

Now, session ticket keys will be rotated every 24 hours
with a lifetime of 7 days. This adds a small performance
cost to existing clients that don't provide a session
ticket encrypted with a fresh enough session ticket key,
which would require a full handshake.

Updates #25256

Change-Id: I15b46af7a82aab9a108bceb706bbf66243a1510f
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* crypto/tls: add Config.VerifyConnection callback

Since the ConnectionState will now be available during
verification, some code was moved around in order to
initialize and make available as much of the fields on
Conn as possible before the ConnectionState is verified.

Fixes #36736

Change-Id: I0e3efa97565ead7de5c48bb8a87e3ea54fbde140
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* crypto/tls: persist the createdAt time when re-wrapping session tickets

Change-Id: I33fcde2d544943fb04c2599810cf7fb773aeba1f
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* crypto/tls: remove version check when unmarshaling sessionState

This was causing issues when fuzzing with
TestMarshalUnmarshal since the test would
occassionally set the version to VersionTLS13,
which would fail when unmarshaling. The check
doesn't add much in practice, and there is no
harm in removing it to de-flake the test.

Fixes #38902

Change-Id: I0906c570e9ed69c85fdd2c15f1b52f9e372c62e3
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* crypto/tls: fix duplicate calls to VerifyConnection

Also add a test that could reproduce this error and
ensure it doesn't occur in other configurations.

Fixes #39012

Change-Id: If792b5131f312c269fd2c5f08c9ed5c00188d1af
Reviewed-on: https://go-review.googlesource.com/c/go/+/233957
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* crypto/tls: test that Clone copies session ticket key fields

Updates #25256

Change-Id: If16c42581f1cf3500fd7fd01c915e487f8025e55
Reviewed-on: https://go-review.googlesource.com/c/go/+/235922
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* crypto/tls: set CipherSuite for VerifyConnection

The ConnectionState's CipherSuite was not set prior
to the VerifyConnection callback in TLS 1.2 servers,
both for full handshakes and resumptions.

Change-Id: Iab91783eff84d1b42ca09c8df08e07861e18da30
Reviewed-on: https://go-review.googlesource.com/c/go/+/236558
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* crypto/tls: restore OCSP and SCTs during session resumption

Restore previously sent SCTs and stapled OCSP response during session
resumption for both TLS 1.2 and 1.3. This behavior is somewhat
complicated for TLS 1.2 as SCTs are sent during the server hello,
so they override what is saved in ClientSessionState. It is likely
that if the server is sending a different set of SCTs there is probably
a reason for doing so, such as a log being retired, or SCT validation
requirements changing, so it makes sense to defer to the server in
that case.

Fixes #39075

Change-Id: I3c0fa2f69c6bf0247a447c48a1b4c733a882a233
Reviewed-on: https://go-review.googlesource.com/c/go/+/234237
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* crypto/tls: fix DialContext docs

Change-Id: I58e3febbf63049bebb4f8ed8893288183c8aaccd
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* crypto/tls: expand the ConnectionState docs

Fixes #37572

Change-Id: I493392f535a979ee16609861041da2ecfe21cf77
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* crypto/tls: replace VerifyPeerCertificate example with VerifyConnection

Look at how much better it is!

Updates #36736

Change-Id: I53a314a103a42dd869c05823fa50f37d70f9d283
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* crypto/tls: create certs w/o KeyEncipherment KU for non-RSA keys in generate_cert.go

Summary

The crypto/tls/generate_cert.go utility should only set the template
x509.Certificate's KeyUsage field to a value with the
x509.KeyUsageKeyEncipherment bits set when the certificate subject
public key is an RSA public key, not an ECDSA or ED25519 public key.

Background

RFC 5480 describes the usage of ECDSA elliptic curve subject keys with
X.509. Unfortunately while Section 3 "Key Usages Bits" indicates which
key usage bits MAY be used with a certificate that indicates
id-ecPublicKey in the SubjectPublicKeyInfo field it doesn't provide
guidance on which usages should *not* be included (e.g. the
keyEncipherment bit, which is particular to RSA key exchange). The same
problem is present in RFC 8410 Section 5 describing Key Usage Bits for
ED25519 elliptic curve subject keys.

There's an update to RFC 5480 in last call stage within the IETF LAMPS
WG, draft-ietf-lamps-5480-ku-clarifications-00. This update is meant
to clarify the allowed Key Usages extension values for certificates with
ECDSA subject public keys by adding:

> If the keyUsage extension is present in a certificate that indicates
> id-ecPublicKey as algorithm of AlgorithmIdentifier [RFC2986] in
> SubjectPublicKeyInfo, then following values MUST NOT be present:
>
> keyEncipherment; and
> dataEncipherment.

I don't believe there is an update for RFC 8410 in the works but I
suspect it will be clarified similarly in the future.

This commit updates generate_cert.go to ensure when the certificate
public key is ECDSA or ED25519 the generated certificate has the
x509.Certificate.KeyUsage field set to a value that doesn't include KUs
specific to RSA. For ECDSA keys this will adhere to the updated RFC 5480
language.

Fixes #36499

Change-Id: Ib1b0757c039b7fe97fc6d1e826fe6b88856c1964
GitHub-Last-Rev: a8f34fb33dde90e09b6f9a27b2598a82b3023abb
GitHub-Pull-Request: golang/go#36500
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* crypto/tls: relax the docs of InsecureSkipVerify

Fixes #39074

Change-Id: I72ec95f4b190253bb82d52a03a769b0399170b93
Reviewed-on: https://go-review.googlesource.com/c/go/+/239746
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* crypto: fix PKCS space in docs

Change-Id: Iee53acb963a889410f8c6daaa9a7841f1b12c6fb
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* crypto/tls: replace errClosed with net.ErrClosed

CL 250357 exported net.ErrClosed to allow more reliable detection
of closed network connection errors.  Use that error in crypto/tls
as well.

The error message is changed from "tls: use of closed connection"
to "use of closed network connection", so the code that detected such
errors by looking for that text in the error message will need to be
updated to use errors.Is(err, net.ErrClosed) instead.

Fixes #41066

Change-Id: Ic05c0ed6a4f57af2a0302d53b00851a59200be2e
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* crypto/tls: make config.Clone return nil if the source is nil

Fixes #40565

Change-Id: I13a67be193f8cd68df02b8729529e627a73d364b
GitHub-Last-Rev: b03d2c04fd88db909b40dfd7bd08fe13d8994ab9
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* crypto/tls: fix TestLinkerGC test

A test that checks if "tls.(*Conn)" appears in any symbol's name.
tls.Conn is a type, so the string "tls.(*Conn)" can only appear
in the name of a method of Conn. But the test code doesn't use
any of the methods. Not sure why this needs to be live. In
particular, the linker is now able to prune all methods of Conn.
Remove this requirement. In fact, just drop the only_conn test
case, as simply allocating a type doesn't necessarily bring
anything live.

Change-Id: I754291b75d38e1465b5291b4dea20806615d21b3
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* crypto/tls: fix typo in spelling of permanentError

Change-Id: I819c121ff388460ec348af773ef94b44416a2ea9
GitHub-Last-Rev: 98dd8fb25cecb73e88d107e0a35e3e63a53dfd09
GitHub-Pull-Request: golang/go#41785
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* all: update references to symbols moved from io/ioutil to io

The old ioutil references are still valid, but update our code
to reflect best practices and get used to the new locations.

Code compiled with the bootstrap toolchain
(cmd/asm, cmd/dist, cmd/compile, debug/elf)
must remain Go 1.4-compatible and is excluded.
Also excluded vendored code.

For #41190.

Change-Id: I6d86f2bf7bc37a9d904b6cee3fe0c7af6d94d5b1
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* crypto/tls: add no-shared to openssl build instructions

This prevents the custom-built version of openssl prefering the system
libraries over the ones compiled with the specified (weak crypto)
options necessary to generate the updates. This difference can lead to
confusing failures when updating the tests.

Fixes #31809

Change-Id: I2dd257f3121d6c6c62c6aeba52e1c74046b3c584
GitHub-Last-Rev: 6d4eeafadf0b4671b7e17c6810f1a66a9fda7d3c
GitHub-Pull-Request: golang/go#41630
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* crypto/tls: document the ClientAuthType consts

Fixes #34023

Change-Id: Ib7552a8873a79a91e8d971f906c6d7283da7a80c
Reviewed-on: https://go-review.googlesource.com/c/go/+/264027
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* crypto/tls: set Deadline before sending close notify alert

This change also documents the need to set a Deadline before
calling Read or Write.

Fixes #31224

Change-Id: I89d6fe3ecb0a0076b4c61765f61c88056f951406
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* crypto/tls: pool Conn's outBuf to reduce memory cost of idle connections

Derived from CL 263277, which includes benchmarks.

Fixes #42035

Co-authored-by: Filippo Valsorda <filippo@golang.org>
Change-Id: I5f28673f95d4568b7d13dbc20e9d4b48d481a93d
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* crypto/tls: don't use CN in BuildNameToCertificate if SANs are present

Change-Id: I18d5b9fc392a6a52fbdd240254d6d9db838073a4
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* crypto/tls: add HandshakeContext method to Conn

Adds the (*tls.Conn).HandshakeContext method. This allows
us to pass the context provided down the call stack to
eventually reach the tls.ClientHelloInfo and
tls.CertificateRequestInfo structs.
These contexts are exposed to the user as read-only via Context()
methods.

This allows users of (*tls.Config).GetCertificate and
(*tls.Config).GetClientCertificate to use the context for
request scoped parameters and cancellation.

Replace uses of (*tls.Conn).Handshake with (*tls.Conn).HandshakeContext
where appropriate, to propagate existing contexts.

Fixes #32406

Change-Id: I33c228904fe82dcf57683b63627497d3eb841ff2
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* crypto/tls: drop macFunction abstraction

Since we dropped SSLv3, there is only one MAC scheme, and it doesn't
need any state beyond a keyed HMAC, so we can replace the macFunction
with the hash.Hash it wraps.

Pointed out by mtp@.

Change-Id: I5545be0e6ccb34a3055fad7f6cb5f628ff748e9f
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* crypto/tls: ensure the server picked an advertised ALPN protocol

This is a SHALL in RFC 7301, Section 3.2.

Also some more cleanup after NPN, which worked the other way around
(with the possibility that the client could pick a protocol the server
did not suggest).

Change-Id: I83cc43ca1b3c686dfece8315436441c077065d82
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* crypto/tls: de-prioritize AES-GCM ciphers when lacking hardware support

When either the server or client are lacking hardware support for
AES-GCM ciphers, indicated by the server lacking the relevant
instructions and by the client not putting AES-GCM ciphers at the top
of its preference list, reorder the preference list to de-prioritize
AES-GCM based ciphers when they are adjacent to other AEAD ciphers.

Also updates a number of recorded openssl TLS tests which previously
only specified TLS 1.2 cipher preferences (using -cipher), but not
TLS 1.3 cipher preferences (using -ciphersuites), to specify both
preferences, making these tests more predictable.

Fixes #41181.

Change-Id: Ied896c96c095481e755aaff9ff0746fb4cb9568e
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* all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp

As part of #42026, these helpers from io/ioutil were moved to os.
(ioutil.TempFile and TempDir became os.CreateTemp and MkdirTemp.)

Update the Go tree to use the preferred names.

As usual, code compiled with the Go 1.4 bootstrap toolchain
and code vendored from other sources is excluded.

ReadDir changes are in a separate CL, because they are not a
simple search and replace.

For #42026.

Change-Id: If318df0216d57e95ea0c4093b89f65e5b0ababb3
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* crypto/tls: revert "add HandshakeContext method to Conn"

This reverts CL 246338.

Reason for revert: waiting for 1.17 release cycle

Updates #32406

Change-Id: I074379039041e086c62271d689b4b7f442281663
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* all: go fmt std cmd (but revert vendor)

Make all our package sources use Go 1.17 gofmt format
(adding //go:build lines).

Part of //go:build change (#41184).
See https://golang.org/design/draft-gobuild

Change-Id: Ia0534360e4957e58cd9a18429c39d0e32a6addb4
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* docs: fix spelling

Change-Id: Ib689e5793d9cb372e759c4f34af71f004010c822
GitHub-Last-Rev: d63798388e5dcccb984689b0ae39b87453b97393
GitHub-Pull-Request: golang/go#44259
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* docs: clarify when APIs use context.Background.

The Go standard library retrofitted context support onto existing APIs
using context.Background and later offered variants that directly
supported user-defined context value specification. This commit makes
that behavior clear in documentation and suggests context-aware
alternatives if the user is looking for one.

An example motivation is supporting code for use in systems that expect
APIs to be cancelable for lifecycle correctness or load
shedding/management reasons, as alluded to in
https://blog.golang.org/context-and-structs.

Updates #44143

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* all: remove duplicate words

Change-Id: Ib0469232a2b69a869e58d5d24990ad74ac96ea56
GitHub-Last-Rev: eb38e049ee1e773392ff3747e1eb2af20dd50dcd
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* crypto/tls: add HandshakeContext method to Conn

Adds the (*tls.Conn).HandshakeContext method. This allows
us to pass the context provided down the call stack to
eventually reach the tls.ClientHelloInfo and
tls.CertificateRequestInfo structs.
These contexts are exposed to the user as read-only via Context()
methods.

This allows users of (*tls.Config).GetCertificate and
(*tls.Config).GetClientCertificate to use the context for
request scoped parameters and cancellation.

Replace uses of (*tls.Conn).Handshake with (*tls.Conn).HandshakeContext
where appropriate, to propagate existing contexts.

Fixes #32406

Change-Id: I259939c744bdc9b805bf51a845a8bc462c042483
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* crypto/tls: remove flaky cancellation test

This will be reintroduced again once the source of the
flakiness has been determined and fixed.

Fixes #45084

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* all: fix spellings

This follows the spelling choices that the Go project has made for English words.
https://github.com/golang/go/wiki/Spelling

Change-Id: Ie7c586d2cf23020cb492cfff58c0831d2d8d3a78
GitHub-Last-Rev: e16a32cd225a275f73d236bcb33703986d110ded
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* crypto/tls: fix flaky handshake cancellation tests

Simplified both tests significantly by removing logic for writing
the client/server side messages. The flake was likely because of a
race between the closing of the local pipe from inside the test
and closing of the pipe from within the handshakeContext goroutine.
Wait to close the local pipe in the test until after the test
has finished running.

Fixes #45106
Fixes #45299

Change-Id: If7ca75aeff7df70cda03c934fa9d8513276d465d
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* crypto/tls: enforce ALPN overlap when negotiated on both sides

During the TLS handshake if the server doesn't support any of the
application protocols requested by the client, send the
no_application_protocol alert and abort the handshake on the server
side. This enforces the requirements of RFC 7301.

Change-Id: Iced2bb5c6efc607497de1c40ee3de9c2b393fa5d
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* crypto/tls: make cipher suite preference ordering automatic

We now have a (well, two, depending on AES hardware support) universal
cipher suite preference order, based on their security and performance.
Peer and application lists are now treated as filters (and AES hardware
support hints) that are applied to this universal order.

This removes a complex and nuanced decision from the application's
responsibilities, one which we are better equipped to make and which
applications usually don't need to have an opinion about. It also lets
us worry less about what suites we support or enable, because we can be
confident that bad ones won't be selected over good ones.

This also moves 3DES suites to InsecureCipherSuites(), even if they are
not disabled by default. Just because we can keep them as a last resort
it doesn't mean they are secure. Thankfully we had not promised that
Insecure means disabled by default.

Notable test changes:

  - TestCipherSuiteCertPreferenceECDSA was testing that we'd pick the
    right certificate regardless of CipherSuite ordering, which is now
    completely ignored, as tested by TestCipherSuitePreference. Removed.

  - The openssl command of TestHandshakeServerExportKeyingMaterial was
    broken for TLS 1.0 in CL 262857, but its golden file was not
    regenerated, so the test kept passing. It now broke because the
    selected suite from the ones in the golden file changed.

  - In TestAESCipherReordering, "server strongly prefers AES-GCM" is
    removed because there is no way for a server to express a strong
    preference anymore; "client prefers AES-GCM and AES-CBC over ChaCha"
    switched to ChaCha20 when the server lacks AES hardware; and finally
    "client supports multiple AES-GCM" changed to always prefer AES-128
    per the universal preference list.

    * this is going back on an explicit decision from CL 262857, and
      while that client order is weird and does suggest a strong dislike
      for ChaCha20, we have a strong dislike for software AES, so it
      didn't feel worth making the logic more complex

  - All Client-* golden files had to be regenerated because the
    ClientHello cipher suites have changed.
    (Even when Config.CipherSuites was limited to one suite, the TLS 1.3
    default order changed.)

Fixes #45430
Fixes #41476 (as 3DES is now always the last resort)

Change-Id: If5f5d356c0f8d1f1c7542fb06644a478d6bad1e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/314609
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Trust: Filippo Valsorda <filippo@golang.org>

* crypto/tls: fix typo in Config.NextProtos docs

Change-Id: I916df584859595067e5e86c35607869397dbbd8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/325651
Trust: Filippo Valsorda <filippo@golang.org>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

* crypto/tls: let HTTP/1.1 clients connect to servers with NextProtos "h2"

Fixes #46310

Change-Id: Idd5e30f05c439f736ae6f3904cbb9cc2ba772315
Reviewed-on: https://go-review.googlesource.com/c/go/+/325432
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* crypto/tls: test key type when casting

When casting the certificate public key in generateClientKeyExchange,
check the type is appropriate. This prevents a panic when a server
agrees to a RSA based key exchange, but then sends an ECDSA (or
other) certificate.

Fixes #47143
Fixes CVE-2021-34558

Thanks to Imre Rad for reporting this issue.

Change-Id: Iabccacca6052769a605cccefa1216a9f7b7f6aea
Reviewed-on: 1116723
Reviewed-by: Filippo Valsorda <valsorda@google.com>
Reviewed-by: Katie Hockman <katiehockman@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/334031
Trust: Filippo Valsorda <filippo@golang.org>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

* crypto/tls: fix typo in PreferServerCipherSuites comment

Fixing a typo, Deprected -> Deprecated.

Change-Id: Ie0ccc9a57ae6a935b4f67154ac097dba4c3832ec
GitHub-Last-Rev: 57337cc1bfa771111f229e7b899fdfdad3b1655e
GitHub-Pull-Request: golang/go#47745
Reviewed-on: https://go-review.googlesource.com/c/go/+/342791
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* [dev.boringcrypto] crypto/tls: use correct config in TestBoringClientHello

The existing implementation sets the ClientConfig to specific values to
check, but does no…

* fix: resolve merge incompatibilities (#7)

- Removed anything only build with tag `boringcrypto`
- Defined dummy Boring struct to supply statically defined Boring ENV VAR(s) and functions.
- Adding back removed `extensionNextProtoNeg` extension.

* Update README.md

* chore: fixing comments

- uncomment an occurrence of `boring`
- edited comment for `decryptTicket`/`DecryptTicketWith` to reflect changes made.

Co-authored-by: Russ Cox <rsc@golang.org>
Co-authored-by: Filippo Valsorda <filippo@golang.org>
Co-authored-by: Filippo Valsorda <hi@filippo.io>
Co-authored-by: Katie Hockman <katie@golang.org>
Co-authored-by: Ainar Garipov <gugl.zadolbal@gmail.com>
Co-authored-by: Brad Fitzpatrick <bradfitz@golang.org>
Co-authored-by: fenos <fabri.feno@gmail.com>
Co-authored-by: Bryan C. Mills <bcmills@google.com>
Co-authored-by: Josh Bleecher Snyder <josharian@gmail.com>
Co-authored-by: Olivier Poitrey <rs@netflix.com>
Co-authored-by: Ville Skyttä <ville.skytta@iki.fi>
Co-authored-by: Alex Harford <alex.harford@saucelabs.com>
Co-authored-by: Johan Jansson <johan.jansson@iki.fi>
Co-authored-by: Ziheng Liu <lzhfromustc@gmail.com>
Co-authored-by: Chris Le Roy <brompwnie@users.noreply.github.com>
Co-authored-by: Brad Fitzpatrick <brad@danga.com>
Co-authored-by: Dmitri Shuralyov <dmitshur@golang.org>
Co-authored-by: Roland Shoemaker <rolandshoemaker@gmail.com>
Co-authored-by: Daniel <cpu@letsencrypt.org>
Co-authored-by: Chen.Zhidong <njutczd@gmail.com>
Co-authored-by: Cherry Zhang <cherryyz@google.com>
Co-authored-by: Luca Spiller <luca@stackednotion.com>
Co-authored-by: Thom Wiggers <thom@thomwiggers.nl>
Co-authored-by: cch123 <buaa.cch@gmail.com>
Co-authored-by: Johan Brandhorst <johan.brandhorst@gmail.com>
Co-authored-by: Roland Shoemaker <roland@golang.org>
Co-authored-by: John Bampton <jbampton@gmail.com>
Co-authored-by: Matt T. Proud <matt.proud@gmail.com>
Co-authored-by: Naman Gera <namangera15@gmail.com>
Co-authored-by: vinckr <vincent@ory.sh>
Co-authored-by: Sofía Celi <cherenkovd69@gmail.com>
Co-authored-by: Watson Ladd <watson@cloudflare.com>
Co-authored-by: Agniva De Sarker <agnivade@yahoo.co.in>
Co-authored-by: Heschi Kreinick <heschi@google.com>
Co-authored-by: Chressie Himpel <chressie@google.com>
Co-authored-by: Dan Kortschak <dan@kortschak.io>
Co-authored-by: Nicolas Hillegeer <aktau@google.com>
Co-authored-by: Ian Lance Taylor <iant@golang.org>
Co-authored-by: Lasse Folger <lassefolger@google.com>
Co-authored-by: Daniel Martí <mvdan@mvdan.cc>
Co-authored-by: David Taylor <tinystatemachine@gmail.com>
Co-authored-by: Tatiana Bradley <tatiana@golang.org>
2022-11-01 11:01:11 -06:00
Gaukas Wang
54f1f4e2f9
Sync upstream crypto/tls (#120)
* Merge Upstream (#4)

* crypto/rand, internal/syscall/unix: add support for getrandom syscall on solaris

The getrandom syscall is available on Solaris and Illumos, see
https://docs.oracle.com/cd/E88353_01/html/E37841/getrandom-2.html and
https://illumos.org/man/2/getrandom

Change-Id: Id1c65d6a5b2fbc80d20b43d8b32dab137ca950ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/299134
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Reviewed-by: Ian Lance Taylor <iant@golang.org>

* docs: clarify when APIs use context.Background.

The Go standard library retrofitted context support onto existing APIs
using context.Background and later offered variants that directly
supported user-defined context value specification. This commit makes
that behavior clear in documentation and suggests context-aware
alternatives if the user is looking for one.

An example motivation is supporting code for use in systems that expect
APIs to be cancelable for lifecycle correctness or load
shedding/management reasons, as alluded to in
https://blog.golang.org/context-and-structs.

Updates #44143

Change-Id: I2d7f954ddf9b48264d5ebc8d0007058ff9bddf14
Reviewed-on: https://go-review.googlesource.com/c/go/+/296152
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Jean de Klerk <deklerk@google.com>
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* cmd: move GOEXPERIMENT knob from make.bash to cmd/go

This CL changes GOEXPERIMENT to act like other GO[CONFIG] environment
variables. Namely, that it can be set at make.bash time to provide a
default value used by the toolchain, but then can be manually set when
running either cmd/go or the individual tools (compiler, assembler,
linker).

For example, it's now possible to test rsc.io/tmp/fieldtrack by simply
running:

GOEXPERIMENT=fieldtrack go test -gcflags=-l rsc.io/tmp/fieldtrack \
  -ldflags=-k=rsc.io/tmp/fieldtrack.tracked

without needing to re-run make.bash. (-gcflags=-l is needed because
the compiler's inlining abilities have improved, so calling a function
with a for loop is no longer sufficient to suppress inlining.)

Fixes #42681.

Change-Id: I2cf8995d5d0d05f6785a2ee1d3b54b2cfb3331ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/300991
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* internal/poll: fix some grammar errors

Change-Id: I25a6424bce9d372fa46e8bdd856095845d3397bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/300889
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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* all: remove duplicate words

Change-Id: Ib0469232a2b69a869e58d5d24990ad74ac96ea56
GitHub-Last-Rev: eb38e049ee1e773392ff3747e1eb2af20dd50dcd
GitHub-Pull-Request: golang/go#44805
Reviewed-on: https://go-review.googlesource.com/c/go/+/299109
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* all: add internal/itoa package

This replaces five implementations scattered across low level packages.
(And I plan to use it in a sixth soon.)
Three of the five were byte-for-byte identical.

Change-Id: I3bbbeeac63723a487986c912b604e10ad1e042f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/301549
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>

* internal/poll: eliminate the redundant type conversions of FD.Sysfd

Change-Id: Ib75662f717320510319c696520e645f54eec97f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/301569
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

* crypto/tls: add HandshakeContext method to Conn

Adds the (*tls.Conn).HandshakeContext method. This allows
us to pass the context provided down the call stack to
eventually reach the tls.ClientHelloInfo and
tls.CertificateRequestInfo structs.
These contexts are exposed to the user as read-only via Context()
methods.

This allows users of (*tls.Config).GetCertificate and
(*tls.Config).GetClientCertificate to use the context for
request scoped parameters and cancellation.

Replace uses of (*tls.Conn).Handshake with (*tls.Conn).HandshakeContext
where appropriate, to propagate existing contexts.

Fixes #32406

Change-Id: I259939c744bdc9b805bf51a845a8bc462c042483
Reviewed-on: https://go-review.googlesource.com/c/go/+/295370
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* crypto/tls: remove flaky cancellation test

This will be reintroduced again once the source of the
flakiness has been determined and fixed.

Fixes #45084

Change-Id: I6677b27fcd71e8c9bb8edbe8e3be70e5a271ebd3
Reviewed-on: https://go-review.googlesource.com/c/go/+/302569
Trust: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
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* crypto/rand, internal/syscall/unix: add support for getentropy syscall on darwin

The getentropy syscall is available on macOS since version 10.12, which
is the minimum required version since Go 1.15.

Change-Id: I294259af0b11df9669e4dc5fa891d2f2f039d91a
Reviewed-on: https://go-review.googlesource.com/c/go/+/302489
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* [dev.fuzz] internal/fuzz: add minimization of []byte

This works by minimizing for a maximum of one minute. We may consider
making this customizable in the future.

This only minimizes []byte inputs which caused a recoverable error. In
the future, it should support minimizing other appopriate types, and
minimizing types which caused non-recoverable errors (though this is
much more expensive).

The code in internal/fuzz/worker.go is copied from, or heavily inspired
by, code originally authored by Dmitry Vyukov and Josh Bleecher Snyder
as part of the go-fuzz project. Thanks to them for their contributions.
See https://github.com/dvyukov/go-fuzz.

Change-Id: I93dbac7ff874d6d0c1b9b9dda23930ae9921480c
Reviewed-on: https://go-review.googlesource.com/c/go/+/298909
Trust: Katie Hockman <katie@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>

* all: explode GOEXPERIMENT=regabi into 5 sub-experiments

This separates GOEXPERIMENT=regabi into five sub-experiments:
regabiwrappers, regabig, regabireflect, regabidefer, and regabiargs.
Setting GOEXPERIMENT=regabi now implies the working subset of these
(currently, regabiwrappers, regabig, and regabireflect).

This simplifies testing, helps derisk the register ABI project,
and will also help with performance comparisons.

This replaces the -abiwrap flag to the compiler and linker with
the regabiwrappers experiment.

As part of this, regabiargs now enables registers for all calls
in the compiler. Previously, this was statically disabled in
regabiEnabledForAllCompilation, but now that we can control it
independently, this isn't necessary.

For #40724.

Change-Id: I5171e60cda6789031f2ef034cc2e7c5d62459122
Reviewed-on: https://go-review.googlesource.com/c/go/+/302070
Trust: Austin Clements <austin@google.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>

* [dev.fuzz] testing: print logs and error messages when fuzzing

Also improve the error messages for the use of
testing.F functions inside the Fuzz function.

Change-Id: I5fa48f8c7e0460a1da89a49a73e5af83c544e549
Reviewed-on: https://go-review.googlesource.com/c/go/+/298849
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>

* [dev.fuzz] internal/fuzz: reduce allocation in the mutator

When mutating a byte slice, mutate in place, and only allocate once if
the slice's capacity is less than the maximum size.

mutateBytes already should not allocate; we check a post-condition
that the slice's data pointer does not change.

This speeds up the mutator from 4 ms per value to 200-600 ns. For
example:

    goos: darwin
    goarch: amd64
    pkg: internal/fuzz
    cpu: Intel(R) Core(TM) i7-8559U CPU @ 2.70GHz
    BenchmarkMutatorBytes/1-8                5908735               275.3 ns/op
    BenchmarkMutatorBytes/10-8               5198473               282.0 ns/op
    BenchmarkMutatorBytes/100-8              4304750               233.9 ns/op
    BenchmarkMutatorBytes/1000-8             4623988               295.2 ns/op
    BenchmarkMutatorBytes/10000-8            4252104               458.5 ns/op
    BenchmarkMutatorBytes/100000-8           1236751               950.8 ns/op
    PASS
    ok      internal/fuzz   12.993s

Change-Id: I4bf2a04be6c648ef440af2c62bf0ffa3d310172c
Reviewed-on: https://go-review.googlesource.com/c/go/+/306675
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* all: update references to symbols moved from io/ioutil to io

Update references missed in CL 263142.

For #41190

Change-Id: I778760a6a69bd0440fec0848bdef539c9ccb4ee1
GitHub-Last-Rev: dda42b09fff36dc08ec1cdec50cc19e3da5058e5
GitHub-Pull-Request: golang/go#42874
Reviewed-on: https://go-review.googlesource.com/c/go/+/273946
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* net: make ErrClosed and ParseError implement net.Error

Fixes #45357

Change-Id: Iafd41fff232a89be4c88d4b1d66bc3c04d888bcc
Reviewed-on: https://go-review.googlesource.com/c/go/+/307030
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* [dev.fuzz] internal/fuzz: small bug fixes and refactors to minimization

This fixes a few issues that were being masked since
log statements weren't being printed to stdout. Now
that they are, fix the bugs, and update the tests.

Also includes a few small refactors which will make
minimizing non-recoverable errors easier.

Change-Id: Ie2fd2e5534b3980317e1e1f3fd8e04750988c17f
Reviewed-on: https://go-review.googlesource.com/c/go/+/307810
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* internal/goexperiment,cmd: consolidate GOEXPERIMENTs into a new package

Currently there's knowledge about the list of GOEXPERIMENTs in a few
different places. This CL introduces a new package and consolidates
the list into one place: the internal/goexperiment.Flags struct type.

This package gives us a central place to document the experiments as
well as the GOEXPERIMENT environment variable itself. It will also
give us a place to put built-time constants derived from the enabled
experiments.

Now the objabi package constructs experiment names by reflecting over
this struct type rather than having a separate list of these names
(this is similar to how the compiler handles command-line flags and
debug options). We also expose a better-typed API to the toolchain for
propagating enabled experiments.

Change-Id: I06e026712b59fe2bd7cd11a869aedb48ffe5a4b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/307817
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* internal/goexperiment: consolidate experiment-enabled constants

Currently, we have boolean and integral constants for GOEXPERIMENTs in
various places. Consolidate these into automatically generated
constants in the internal/goexperiment package.

Change-Id: I42a49aba2a3b4c722fedea23a613162cd8a67bee
Reviewed-on: https://go-review.googlesource.com/c/go/+/307818
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>

* cmd/internal/objabi: make GOEXPERIMENT be a diff from default experiments

Right now the rules around handling default-on experiments are
complicated and a bit inconsistent. Notably, objabi.GOEXPERIMENT is
set to a comma-separated list of enabled experiments, but this may not
be the string a user should set the GOEXPERIMENT environment variable
to get that list of experiments: if an experiment is enabled by
default but gets turned off by GOEXPERIMENT, then the string we report
needs to include "no"+experiment to capture that default override.

This complication also seeps into the version string we print for "go
tool compile -V", etc. This logic is further complicated by the fact
that it only wants to include an experiment string if the set of
experiments varies from the default.

This CL rethinks how we handle default-on experiments. Now that
experiment state is all captured in a struct, we can simplify a lot of
this logic. objabi.GOEXPERIMENT will be set based on the delta from
the default set of experiments, which reflects what a user would
actually need to pass on the command line. Likewise, we include this
delta in the "-V" output, which simplifies this logic because if
there's nothing to show in the version string, the delta will be
empty.

Change-Id: I7ed307329541fc2c9f90edd463fbaf8e0cc9e8ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/307819
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* runtime,cmd/link: include GOEXPERIMENTs in runtime.Version(), "go version X"

This adds the set of GOEXPERIMENTs to the build version if it differs
from the default set of experiments. This exposes the experiment
settings via runtime.Version() and "go version <binary>".

Change-Id: I143dbbc50f66a4cf175469199974e18848075af6
Reviewed-on: https://go-review.googlesource.com/c/go/+/307820
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* [dev.fuzz] internal/fuzz: add stub for coverage

This change only includes a stub for the function
which will hook into the runtime to expose
coverage instrumentation while we're fuzzing.

Previously, we discussed an exported API named
FuzzCoverage, but since this is within the
internal/fuzz package, simply naming it coverage
seems appropriate.

Change-Id: Iba3240e53e0c4c434e937aa9bb1711a44fec9975
Reviewed-on: https://go-review.googlesource.com/c/go/+/308191
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* [dev.fuzz] internal/fuzz: add mutator for int types

Assuming this works, will follow up with another CL
that mutates other types.

Change-Id: Id61acaacd56ca41e3be52e400f8f768672313bbb
Reviewed-on: https://go-review.googlesource.com/c/go/+/308169
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* [dev.fuzz] internal/fuzz: implement coverage and trace instrumentation

This CL makes two main changes to allow internal/fuzz to support
-d=libfuzzer instrumentation:

1. It extends cmd/link to define _counters and _ecounters symbols so
internal/fuzz can find the coverage counters.

2. It adds "trace" stub functions that implement the ABI expected by
cmd/compile for comparison instrumentation.

N.B., that -tags=libfuzzer should *not* be set, so that
internal/fuzz's trace routines will be used instead of runtime's
libfuzzer trampolines.

Also, the current implementation doesn't support multi-module builds
(i.e., compiling a Go program that spans multiple .so/.dll files).
Presumably this isn't an issue, since "go test -fuzz" will need to
recompile the binary with instrumentation anyway so it can make sure
to always use a single-module build. But we can revisit this if
necessary.

Change-Id: I9b1619119ab7477bebcfd5988b4b60499a7ab0d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/308289
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Katie Hockman <katie@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>

* [dev.fuzz] internal/fuzz: don't count time spent loading corpus

The -fuzztime flag tells us how much time to spend fuzzing, not
counting time spent running the seed corpus. We shouldn't count time
spent loading the cache either. If the cache is large, the time limit
may be exceeded before the coordinator starts the workers.

Change-Id: If00435faa5d24aabdb9003ebb9337fa2e47f22b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/307310
Trust: Jay Conrod <jayconrod@google.com>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Jay Conrod <jayconrod@google.com>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>

* [dev.fuzz] internal/fuzz: improve cancellation in worker event loops

worker.runFuzzing now accepts a Context, used for cancellation instead
of doneC (which is removed). This is passed down through workerClient
RPC methods (ping, fuzz).

workerClient RPC methods now wrap the call method, which handles
marshaling and cancellation.

Both workerClient.call and workerServer.serve should return quickly
when their contexts are cancelled. Turns out, closing the pipe won't
actually unblock a read on all platforms. Instead, we were falling
back to SIGKILL in worker.stop, which works but takes longer than
necessary.

Also fixed missing newline in log message.

Change-Id: I7b5ae54d6eb9afd6361a07759f049f048952e0cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/303429
Trust: Jay Conrod <jayconrod@google.com>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Jay Conrod <jayconrod@google.com>
Reviewed-by: Katie Hockman <katie@golang.org>

* [dev.fuzz] testing: let -fuzztime specify a number of executions

-fuzztime now works similarly to -benchtime: if it's given a string
with an "x" suffix (as opposed to "s" or some other unit of
duration), the fuzzing system will generate and run a maximum number
of values.

This CL also implements tracking and printing counts, since most of
the work was already done.

Change-Id: I013007984b5adfc1a751c379dc98c8d46b4a97e9
Reviewed-on: https://go-review.googlesource.com/c/go/+/306909
Trust: Jay Conrod <jayconrod@google.com>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>

* [dev.fuzz] testing: support T.Parallel in fuzz functions

While running the seed corpus, T.Parallel acts like it does in
subtests started with T.Run: it blocks until all other non-parallel
subtests have finished, then unblocks when the barrier chan is
closed. A semaphore (t.context.waitParallel) limits the number of
tests that run concurrently (determined by -test.parallel).

While fuzzing, T.Parallel has no effect, other than asserting that it
can't be called multiple times. We already run different inputs in
concurrent processes, but we can't run inputs concurrently in the same
process if we want to attribute crashes to specific inputs.

Change-Id: I2bac08e647e1d92ea410c83c3f3558a033fe3dd1
Reviewed-on: https://go-review.googlesource.com/c/go/+/300449
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>

* [dev.fuzz] internal/fuzz: move CoordinateFuzzing args into struct type

This improves readability a bit, and it should help with compatibility
for future clients when arguments are added or reordered.

Unfortunately, testing still can't import internal/fuzz, so the
interface there can't use this type.

Change-Id: I4cda2347884defcbbfc2bd01ab5b4a901d91549c
Reviewed-on: https://go-review.googlesource.com/c/go/+/308192
Trust: Jay Conrod <jayconrod@google.com>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Jay Conrod <jayconrod@google.com>
Reviewed-by: Katie Hockman <katie@golang.org>

* all: fix spellings

This follows the spelling choices that the Go project has made for English words.
https://github.com/golang/go/wiki/Spelling

Change-Id: Ie7c586d2cf23020cb492cfff58c0831d2d8d3a78
GitHub-Last-Rev: e16a32cd225a275f73d236bcb33703986d110ded
GitHub-Pull-Request: golang/go#45442
Reviewed-on: https://go-review.googlesource.com/c/go/+/308291
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>

* internal/poll: fix the intermittent build failures with pipe pool

Correlative CL 308089

Fixes #45059

Change-Id: I1ff9fbf64e6620d651f287ba2a28d40f964d78a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/308329
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>

* internal/poll: ensure that newPoolPipe doesn't return a nil pointer

The function could occasionally return a nil pointer as a non-nil
interface, confusing the calling code.

Fixes #45520

Change-Id: Ifd35613728efa2cee9903177e85d369155074804
Reviewed-on: https://go-review.googlesource.com/c/go/+/309429
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Andy Pan <panjf2000@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>

* [dev.fuzz] internal/fuzz: allow float types to be integer literals

Previously, something like `float64(0)` would fail to decode
since the 0 value is considered an integer literal, and the
float64 parsing code required a float literal. Be more flexible
here since an integer can always be converted to a float.

Change-Id: Id1c53ef2e8a9748a4f71176b00b453a329af4ade
Reviewed-on: https://go-review.googlesource.com/c/go/+/309032
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>

* [dev.fuzz] internal/fuzz: mutate other types

Change-Id: I8042c17268aca0a9bb2f692317207bb864b18680
Reviewed-on: https://go-review.googlesource.com/c/go/+/309033
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>

* internal/execabs: replace ioutil.WriteFile with os.WriteFile

Fixes #45532.

Change-Id: I844acd50d6fa1ce918969bbb52f79dd7412d289f
Reviewed-on: https://go-review.googlesource.com/c/go/+/309350
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>

* runtime: move next_gc and last_next_gc into gcControllerState

This change moves next_gc and last_next_gc into gcControllerState under
the names heapGoal and lastHeapGoal respectively. These are
fundamentally GC pacer related values, and so it makes sense for them to
live here.

Partially generated by

rf '
    ex . {
	memstats.next_gc -> gcController.heapGoal
	memstats.last_next_gc -> gcController.lastHeapGoal
    }
'

except for updates to comments and gcControllerState methods, where
they're accessed through the receiver, and trace-related renames of
NextGC -> HeapGoal, while we're here.

For #44167.

Change-Id: I1e871ad78a57b01be8d9f71bd662530c84853bed
Reviewed-on: https://go-review.googlesource.com/c/go/+/306603
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>

* internal/bytealg: port more performance-critical functions to ABIInternal

CL 308931 ported several runtime assembly functions to ABIInternal so
that compiler-generated ABIInternal calls don't go through ABI
wrappers, but it missed the runtime assembly functions that are
actually defined in internal/bytealg.

This eliminates the cost of wrappers for the BleveQuery and
GopherLuaKNucleotide benchmarks, but there's still more to do for
Tile38.

                                      0-base                1-wrappers
                                     sec/op        sec/op            vs base
BleveQuery                          6.507 ± 0%    6.477 ± 0%  -0.46% (p=0.004 n=20)
GopherLuaKNucleotide                30.39 ± 1%    30.34 ± 0%       ~ (p=0.301 n=20)
Tile38IntersectsCircle100kmRequest 1.038m ± 1%   1.080m ± 2%  +4.03% (p=0.000 n=20)

For #40724.

Change-Id: I0b722443f684fcb997b1d70802c5ed4b8d8f9829
Reviewed-on: https://go-review.googlesource.com/c/go/+/310184
Trust: Austin Clements <austin@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

* bytes: add asm implementation for index on ppc64x

This adds an asm implementation of index on ppc64le and
ppc64. It results in a significant improvement in some
of the benchmarks that use bytes.Index.

The implementation is based on a port of the s390x asm
implementation. Comments on the design are found
with the code.

The following improvements occurred on power8:

Index/10       70.7ns ± 0%    18.8ns ± 0%   -73.4
Index/32        165ns ± 0%      95ns ± 0%   -42.6
Index/4K       9.23µs ± 0%    4.91µs ± 0%   -46
Index/4M       9.52ms ± 0%    5.10ms ± 0%   -46.4
Index/64M       155ms ± 0%      85ms ± 0%   -45.1

Count/10       83.0ns ± 0%    32.1ns ± 0%   -61.3
Count/32        178ns ± 0%     109ns ± 0%   -38.8
Count/4K       9.24µs ± 0%    4.93µs ± 0%   -46
Count/4M       9.52ms ± 0%    5.10ms ± 0%   -46.4
Count/64M       155ms ± 0%      85ms ± 0%   -45.1

IndexHard1     2.36ms ± 0%    0.13ms ± 0%   -94.4
IndexHard2     2.36ms ± 0%    1.28ms ± 0%   -45.8
IndexHard3     2.36ms ± 0%    1.19ms ± 0%   -49.4
IndexHard4     2.36ms ± 0%    2.35ms ± 0%    -0.1

CountHard1     2.36ms ± 0%    0.13ms ± 0%   -94.4
CountHard2     2.36ms ± 0%    1.28ms ± 0%   -45.8
CountHard3     2.36ms ± 0%    1.19ms ± 0%   -49.4

IndexPeriodic/IndexPeriodic2  146µs ± 0%       8µs ± 0%   -94
IndexPeriodic/IndexPeriodic4  146µs ± 0%       8µs ± 0%   -94

Change-Id: I7dd2bb7e278726e27f51825ca8b2f8317d460e60
Reviewed-on: https://go-review.googlesource.com/c/go/+/309730
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Paul Murphy <murp@ibm.com>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
Trust: Carlos Eduardo Seo <carlos.seo@linaro.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>

* internal/goexperiment: move baseline configuration to objabi

We need to adjust baseline experiment configuration based on the
configured GOOS and GOARCH, so it can't live in goexperiment. Move it
to objabi.

Change-Id: I65f4ce56902c6c1a82735050773c58f2d1320cc6
Reviewed-on: https://go-review.googlesource.com/c/go/+/310169
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

* internal/buildcfg: move build configuration out of cmd/internal/objabi

The go/build package needs access to this configuration,
so move it into a new package available to the standard library.

Change-Id: I868a94148b52350c76116451f4ad9191246adcff
Reviewed-on: https://go-review.googlesource.com/c/go/+/310731
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>

* crypto/tls: fix flaky handshake cancellation tests

Simplified both tests significantly by removing logic for writing
the client/server side messages. The flake was likely because of a
race between the closing of the local pipe from inside the test
and closing of the pipe from within the handshakeContext goroutine.
Wait to close the local pipe in the test until after the test
has finished running.

Fixes #45106
Fixes #45299

Change-Id: If7ca75aeff7df70cda03c934fa9d8513276d465d
Reviewed-on: https://go-review.googlesource.com/c/go/+/305250
Trust: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Trust: Katie Hockman <katie@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>

* [dev.fuzz] internal/fuzz: minimize non-recoverable errors

Assuming that this works for non-recoverable errors, there
will likely be a follow-up CL which refactors the minimization
for recoverable errors to use the same RPC flow (since that
more easily allows the worker to tell the coordinator that
it's minimizing and shouldn't send more inputs to other workers
to fuzz).

Change-Id: I32ac7cec4abe2d4c345c0ee77315233047efb1fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/309509
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>

* internal/buildcfg: make regabi an alias for regabi sub-experiments

Currently, specifying GOEXPERIMENT=regabi will turn on all regabi
sub-experiments, but GOEXPERIMENT=noregabi won't turn anything off.
Regabi also isn't a "real" experiment in the sense that nothing in the
code base should depend on it as an experiment flag (it should depend
on the appropriate sub-experiments).

Hence, drop Regabi from goexperiment.Flags and make "regabi" in
GOEXPERIMENT be a real alias for all of the sub-flags, so regabi will
turn on all of the sub-flags and noregabi will turn off all of the
sub-flags.

This way, once we enable the sub-experiments in the baseline
configuration, it will be easy to turn off with "noregabi".

For #40724.

Change-Id: I0fb95be42f756d412e729a396be607d629ae2bab
Reviewed-on: https://go-review.googlesource.com/c/go/+/310609
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

* internal/buildcfg: make regabi enable regabiargs

For #40724.

Change-Id: I6e9d7eb91883857479699972a974a39ce3d9d2cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/310849
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

* internal/buildcfg: enable regabiwrappers by default

For #40724.

Change-Id: I75d6ba2d3e4e2d858eea8053efd0f3fd4439dab7
Reviewed-on: https://go-review.googlesource.com/c/go/+/310172
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>

* internal/buildcfg: enable regabig by default

For #40724.

Change-Id: Ibf4ff8b24b501813839657ac195b909682ac7d0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/310173
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

* net: pass MSG_CMSG_CLOEXEC flag in ReadMsgUnix

As mentioned in #42765, calling "recvmsg" syscall on Linux should come
with "MSG_CMSG_CLOEXEC" flag.

For other systems which not supports "MSG_CMSG_CLOEXEC". ReadMsgUnix()
would check the header. If the header type is "syscall.SCM_RIGHTS",
then ReadMsgUnix() would parse the SocketControlMessage and call each
fd with "syscall.CloseOnExec"

Fixes #42765

Change-Id: I74347db72b465685d7684bf0f32415d285845ebb
GitHub-Last-Rev: ca59e2c9e0e8de1ae590e9b6dc165cb768a574f5
GitHub-Pull-Request: golang/go#42768
Reviewed-on: https://go-review.googlesource.com/c/go/+/272226
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

* internal/buildcfg: enable regabireflect by default

For #40724.

Change-Id: Ib3e4a67c3826176f0d51619754270022344ee194
Reviewed-on: https://go-review.googlesource.com/c/go/+/310174
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
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* internal/buildcfg: enable regabidefer by default

For #40724.

Change-Id: If3a66c0e29cb20dd29ac13c8d00aa46ee279ab97
Reviewed-on: https://go-review.googlesource.com/c/go/+/310175
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>

* internal/buildcfg: enable regabiargs by default

For #40724.

Change-Id: I7509668478d20dd625f210e5a33f5d896a76d6b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/310176
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>

* internal/poll, net: fix comments regarding accept and sysSocket

The implementation of accept was moved from package net to internal/poll
in CL 36799.

Change-Id: I6e5964e0ee22e9c84bc444860cdd497817451fec
Reviewed-on: https://go-review.googlesource.com/c/go/+/311571
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>

* internal/bytealg: add power9 version of bytes index

This adds a power9 version of the bytes.Index function
for little endian.

Here is the improvement on power9 for some of the Index
benchmarks:

Index/10           -0.14%
Index/32           -3.19%
Index/4K          -12.66%
Index/4M          -13.34%
Index/64M         -13.17%
Count/10           -0.59%
Count/32           -2.88%
Count/4K          -12.63%
Count/4M          -13.35%
Count/64M         -13.17%
IndexHard1        -23.03%
IndexHard2        -13.01%
IndexHard3        -22.12%
IndexHard4         +0.16%
CountHard1        -23.02%
CountHard2        -13.01%
CountHard3        -22.12%
IndexPeriodic/IndexPeriodic2  -22.85%
IndexPeriodic/IndexPeriodic4  -23.15%

Change-Id: Id72353e2771eba2efbb1544d5f0be65f8a9f0433
Reviewed-on: https://go-review.googlesource.com/c/go/+/311380
Run-TryBot: Carlos Eduardo Seo <carlos.seo@linaro.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>

* cmd/compile, internal/abi: add FuncPCABIxxx intrinsics

When ABI wrappers are used, there are cases where in Go code we
need the PC of the defined function instead of the ABI wrapper.
Currently we work around this by define such functions as
ABIInternal, even if they do not actually follow the internal ABI.

This CL introduces internal/abi.FuncPCABIxxx functions as compiler
intrinsics, which return the underlying defined function's entry
PC if the argument is a direct reference of a function of the
expected ABI, and reject it if it is of a different ABI.

As a proof of concept, change runtime.goexit back to ABI0 and use
internal/abi.FuncPCABI0 to retrieve its PC.

Updates #44065.

Change-Id: I02286f0f9d99e6a3090f9e8169dbafc6804a2da6
Reviewed-on: https://go-review.googlesource.com/c/go/+/304232
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>

* [dev.fuzz] internal/fuzz: allow setting pcg seed via GODEBUG

Format is "fuzzseed=123".

Change-Id: Idb314270c8fd4307149c8503e13424b653ec4b0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/313651
Trust: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>

* [dev.fuzz] internal/fuzz: add extra []byte mutators

Adds four []byte mutators which:
  * insert a chunk of constant bytes
  * overwirtes a chunk with constant bytes
  * shuffle a range of bytes
  * swaps two chunks

Also updates the 'set byte to random value' mutator to use XOR in
order to avoid a no-op.

Additionally updates the rng call which chooses the []byte mutators
so all the available mutators are used.

Change-Id: I0703518922952f4b1c81b19b196ee91c73b0d5f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/313270
Trust: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>

* internal/buildcfg: enable regabi for Android

This will permit us to write ABIInternal assembler code for linux-amd64.

For #40724

Change-Id: I681866651554eda4229d6faa7f0c1ba42d07e57d
Reviewed-on: https://go-review.googlesource.com/c/go/+/315390
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>

* internal/syscall/unix: use internal/abi.FuncPC for syscall wrapper

Following CL 313230, this is for internal/syscall/unix package.

Updates #45702.

Change-Id: Ie6d8c1923dfeae56896212393c5c2a6e257648d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/316649
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* internal/buildcfg: set Error instead of panicking

All build environment validation sets Error except for the
GOEXPERIMENT parser, which panics. Change it to also set Error so that
a bad GOEXPERIMENT doesn't cause everything that imports
internal/buildcfg to panic on init.

Change-Id: Ie9a506ef0978ecb410f2dcd784638f2167354175
Reviewed-on: https://go-review.googlesource.com/c/go/+/310970
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* [dev.fuzz] internal/fuzz: don't panic if types change

There was a bug where if the types to fuzz were
different from the types in a file in the on-disk
corpus, then the code would panic. We thought
this case was handled, but the final `continue`
in the nested loop still allowed the invalid
entry to be added to the corpus. Pulling the
validation into a helper function makes this
less brittle.

Change-Id: I401346f890ea30ab7cff9640cb555da2e3ff8cc6
Reviewed-on: https://go-review.googlesource.com/c/go/+/313810
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* crypto/tls: enforce ALPN overlap when negotiated on both sides

During the TLS handshake if the server doesn't support any of the
application protocols requested by the client, send the
no_application_protocol alert and abort the handshake on the server
side. This enforces the requirements of RFC 7301.

Change-Id: Iced2bb5c6efc607497de1c40ee3de9c2b393fa5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/289209
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* internal/poll: cast off the last reference of SplicePipe in test

Updates #45059

Change-Id: I9f377abcc7b77136ae6cf4896b968f73c758b559
Reviewed-on: https://go-review.googlesource.com/c/go/+/317510
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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* [dev.fuzz] testing,internal/fuzz: prevent unbounded memory growth

Usage of f.testContext.match.fullName to generate the test name causes
unbounded memory growth, eventually causing the fuzzer to slow down
as memory pressure increases.

Each time fuzzFn is invoked it generates a unique string and stores it
in a map. With the fuzzer running at around 100k executions per second
this consumed around ~30GB of memory in a handful of minutes.

Instead just use the base name of the test for mutated inputs, a special
name for seeded inputs, and the filename for inputs from the input
corpus.

Change-Id: I083f47df7e82f0c6b0bda244f158233784a13029
Reviewed-on: https://go-review.googlesource.com/c/go/+/316030
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* crypto/tls: make cipher suite preference ordering automatic

We now have a (well, two, depending on AES hardware support) universal
cipher suite preference order, based on their security and performance.
Peer and application lists are now treated as filters (and AES hardware
support hints) that are applied to this universal order.

This removes a complex and nuanced decision from the application's
responsibilities, one which we are better equipped to make and which
applications usually don't need to have an opinion about. It also lets
us worry less about what suites we support or enable, because we can be
confident that bad ones won't be selected over good ones.

This also moves 3DES suites to InsecureCipherSuites(), even if they are
not disabled by default. Just because we can keep them as a last resort
it doesn't mean they are secure. Thankfully we had not promised that
Insecure means disabled by default.

Notable test changes:

  - TestCipherSuiteCertPreferenceECDSA was testing that we'd pick the
    right certificate regardless of CipherSuite ordering, which is now
    completely ignored, as tested by TestCipherSuitePreference. Removed.

  - The openssl command of TestHandshakeServerExportKeyingMaterial was
    broken for TLS 1.0 in CL 262857, but its golden file was not
    regenerated, so the test kept passing. It now broke because the
    selected suite from the ones in the golden file changed.

  - In TestAESCipherReordering, "server strongly prefers AES-GCM" is
    removed because there is no way for a server to express a strong
    preference anymore; "client prefers AES-GCM and AES-CBC over ChaCha"
    switched to ChaCha20 when the server lacks AES hardware; and finally
    "client supports multiple AES-GCM" changed to always prefer AES-128
    per the universal preference list.

    * this is going back on an explicit decision from CL 262857, and
      while that client order is weird and does suggest a strong dislike
      for ChaCha20, we have a strong dislike for software AES, so it
      didn't feel worth making the logic more complex

  - All Client-* golden files had to be regenerated because the
    ClientHello cipher suites have changed.
    (Even when Config.CipherSuites was limited to one suite, the TLS 1.3
    default order changed.)

Fixes #45430
Fixes #41476 (as 3DES is now always the last resort)

Change-Id: If5f5d356c0f8d1f1c7542fb06644a478d6bad1e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/314609
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* cmd/compile,reflect: allow longer type names

Encode the length of type names and tags in a varint encoding
instead of a fixed 2-byte encoding. This allows lengths longer
than 65535 (which can happen for large unnamed structs).

Removed the alignment check for #14962, it isn't relevant any more
since we're no longer reading pointers directly out of this data
(it is encoded as an offset which is copied out bytewise).

Fixes #44155
Update #14962

Change-Id: I6084f6027e5955dc16777c87b0dd5ea2baa49629
Reviewed-on: https://go-review.googlesource.com/c/go/+/318249
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* [dev.fuzz] internal/fuzz: use coverage instrumentation while fuzzing

This change updates the go command behavior when
fuzzing to instrument the binary for code coverage,
and uses this coverage in the fuzzing engine to
determine if an input is interesting.

Unfortunately, we can't store and use the coverage
data for a given run of `go test` and re-use it
the next time we fuzz, since the edges could have
changed between builds. Instead, every entry in
the seed corpus and the on-disk corpus is run
by the workers before fuzzing begins, so that the
coordinator can get the baseline coverage for what
the fuzzing engine has already found (or what
the developers have already provided).

Users should run `go clean -fuzzcache` before
using this change, to clear out any existing
"interesting" values that were in the cache.
Previously, every single non-crashing input was
written to the on-disk corpus. Now, only inputs
that actually expand coverage are written.

This change includes a small hack in
cmd/go/internal/load/pkg.go which ensures that the Gcflags
that were explicitly set in cmd/go/internal/test/test.go
don't get cleared out.

Tests will be added in a follow-up change, since
they will be a bit more involved.

Change-Id: Ie659222d44475c6d68fa4a35d37c37cab3619d71
Reviewed-on: https://go-review.googlesource.com/c/go/+/312009
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* all: add //go:build lines to assembly files

Don't add them to files in vendor and cmd/vendor though. These will be
pulled in by updating the respective dependencies.

For #41184

Change-Id: Icc57458c9b3033c347124323f33084c85b224c70
Reviewed-on: https://go-review.googlesource.com/c/go/+/319389
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* [dev.fuzz] internal/fuzz: include coverage in logged stats

Change-Id: I51ec70b69e802fd0d962ba9544e96e29b1627fef
Reviewed-on: https://go-review.googlesource.com/c/go/+/319590
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* [dev.fuzz] internal/fuzz: move coverage capture closer to function

When instrumented packages intersect with the packages used by the
testing or internal/fuzz packages the coverage counters become noisier,
as counters will be triggered by non-fuzzed harness code.

Ideally counters would be deterministic, as there are many advanced
fuzzing strategies that require mutating the input while maintaining
static coverage.

The simplest way to mitigate this noise is to capture the coverage
counters as closely as possible to the invocation of the fuzz target
in the testing package. In order to do this add a new function which
captures the current values of the counters, SnapshotCoverage. This
function copies the current counters into a static buffer,
coverageSnapshot, which workerServer.fuzz can then inspect when it
comes time to check if new coverage has been found.

This method is not foolproof. As the fuzz target is called in a
goroutine, harness code can still cause counters to be incremented
while the target is being executed. Despite this we do see
significant reduction in churn via this approach. For example,
running a  basic target that causes strconv to be instrumented for
500,000 iterations causes ~800 unique sets of coverage counters,
whereas by capturing the counters closer to the target we get ~40
unique sets.

It may be possible to make counters completely deterministic, but
likely this would require rewriting testing/F.Fuzz to not use tRunner
in a goroutine, and instead use it in a blocking manner (which I
couldn't figure out an obvious way to do), or by doing something even
more complex.

Change-Id: I95c2f3b1d7089c3e6885fc7628a0d3a8ac1a99cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/320329
Trust: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
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Reviewed-by: Katie Hockman <katie@golang.org>

* [dev.fuzz] internal/fuzz: make minimization tests more reliable

* Introduced -fuzzminimizetime flag to control the number of time or
  the number of calls to spend minimizing. Defaults to 60s. Only works
  for unrecoverable crashes for now.
* Moved the count (used by -fuzztime=1000x) into shared
  memory. Calling workerClient.fuzz resets it, but it will remain
  after the worker processes crashes. workerClient.minimize resets it
  once before restarting the worker the first time, but the total
  number of runs should still be limited during minimization, even
  after multiple terminations and restarts.
* Renamed fuzzArgs.Count to Limit to avoid confusion.
* Several other small fixes and refactorings.

Change-Id: I03faa4c94405041f6dfe48568e5ead502f8dbbd2
Reviewed-on: https://go-review.googlesource.com/c/go/+/320171
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* [dev.typeparams] internal/buildcfg: turn on register ABI on all AMD64 platforms

Register ABI is already enabled by default on AMD64 on Linux
(including Android), macOS, and Windows. This CL enables it on the
rest, specifically, on FreeBSD, OpenBSD, NetBSD, DragonflyBSD,
Solaris (including Illumos), iOS (simulator), and Plan 9.

Change-Id: I80fa20c8bbc8d67b16a19f71b65422e890210ab5
Reviewed-on: https://go-review.googlesource.com/c/go/+/321332
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>

* [dev.fuzz] internal/fuzz: remove old TODO

Change-Id: I997934ebcde0dee9017c85a0572597855d73cf64
Reviewed-on: https://go-review.googlesource.com/c/go/+/321569
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* [dev.typeparams] internal/buildcfg: enable defer/go wrapping everywhere

For register ABI, we wrap deferred/go'd function with arguments
or results in an argumentless closure, so the runtime can call the
function without knowing how to marshal the arguments, or
reserving frame for arguments and results.

The wrapping mechanism works everywhere, regardless of whether the
register ABI is used. And wrapping will simplify the compiler and
runtime's implementation for defer and go calls. For example, the
compiler will not need to marshal arguments for defer/go calls,
the opendefer metadata will not need to contain argument
information, and _defer record will be fixed-sized.

Enable wrapping everywhere.

Change-Id: I2032ba87249ceb686310dc640fb00696669ae912
Reviewed-on: https://go-review.googlesource.com/c/go/+/321958
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* Revert "[dev.fuzz] internal/fuzz: include coverage in logged stats"

This reverts commit 54f067812dd870c305daabd22ca190b0f48e672e.

Reason for revert: While this is helpful for the engineering team when we're debugging, it might lead to users feeling like the fuzzer is stuck and that there are a lot of edges that are still yet to be reached. In reality, it's very likely that the compiler will instrument more lines of code than are actually reachable by the fuzz target, so showing the ratio between number of edges hit vs. all edges can be misleading. In the future, we may want to consider making this information viewable by a debug flag or something similar.

Change-Id: Ied696f8bf644445bad22c872b64daa7add605ac6
Reviewed-on: https://go-review.googlesource.com/c/go/+/322632
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* [dev.fuzz] internal/fuzz,testing: treat panics as recoverable

And only log the last panic, not all of them, during minimization.
This change makes the worker processes quiet, so now the only
process that logs anything is the coordinator. This hides all of
the panics caused during minimization of an input which causes
a panic.

This change also alters the usage of tRunner such that we now
recover from recoverable panics instead of terminating the
process. This results in larger stack traces, since we include
a bit more of the trace within testing. There is a TODO to see
if it's possible to slice the stack up so that it is somewhat
more informative.

Change-Id: Ic85eabd2e70b078412fbb88adf424a8da25af876
Reviewed-on: https://go-review.googlesource.com/c/go/+/321230
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* [dev.fuzz] internal/fuzz: support minimization of strings, integers, and floats

Adds support for minimizing strings using the same logic as byte slices
as well as minimizing both signed and unsigned integers and floats using
extremely basic logic. A more complex approach is probably warranted in
the future, but for now this should be _good enough_.

Change-Id: Ibc6c3d6ae82685998f571aa2c1ecea2f85c2708b
Reviewed-on: https://go-review.googlesource.com/c/go/+/320669
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* [dev.typeparams] internal/abi: define ARM64 register ABI constants

Change-Id: I9cdf0f2b6c1739f13a859a8e37351f8ecd77804a
Reviewed-on: https://go-review.googlesource.com/c/go/+/323932
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* [dev.typeparams] internal/buildcfg: allow regabi GOEXPERIMENTs on ARM64

It is not working yet, but allow enabling the experiments so we
can develop.

Change-Id: I957eb05acb4d80b2858ff1f8c16bbfb24e0f6e56
Reviewed-on: https://go-review.googlesource.com/c/go/+/323933
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* [dev.fuzz] internal/fuzz: notify coordinator for minimization

When a worker process finds a crasher, it now sends that result
directly to the coordinator without attempting to minimize it
first. The coordinator stops sending new inputs and sends the
unminimized crasher back to a worker (any worker) for minimization.

This prevents wasted work during minimization and will help us
implement -keepfuzzing later on. We may also be able to minimize
interesting inputs with this approach later.

Since panics are recoverable errors (they don't terminate worker
processes), we no longer attempt to minimize non-recoverable errors.
This didn't work too well before: we lost too much state.

Change-Id: Id142c7e91a33f64584170b0d42d22cb1f22a92d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/321835
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* [dev.typeparams] internal/bytealg: call memeqbody directly in memequal_varlen on ARM64

Currently, memequal_varlen opens up a frame and call memequal,
which then tail-calls memeqbody. This CL changes memequal_varlen
tail-calls memeqbody directly.

This makes it simpler to switch to the register ABI in the next
CL.

Change-Id: Ia1367c0abb7f4755fe736c404411793fb9e5c04f
Reviewed-on: https://go-review.googlesource.com/c/go/+/324399
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* [dev.typeparams] runtime, internal/bytealg: port performance-critical functions to register ABI on ARM64

This CL ports a few performance-critical assembly functions to use
register arguments directly. This is similar to CL 308931 and
CL 310184.

Change-Id: I6e30dfff17f76b8578ce8cfd51de21b66610fdb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/324400
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* [dev.typeparams] internal/buildcfg: turn on regabiwrappers by default on ARM64

Change-Id: I8db0a797a745630ec35af3e56406fcb250ea59fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/324768
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* [dev.typeparams] internal/buildcfg: turn on regabireflect by default on ARM64

Change-Id: I4a0a093b07a287cc3a3e0ee939e7ee82d8e9b1aa
Reviewed-on: https://go-review.googlesource.com/c/go/+/324889
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* [dev.typeparams] internal/buildcfg: turn on register ABI by default on ARM64

This CL enables all regabi experiments on ARM64 by default.
regabiwrappers and regabireflect are enabled in the previous CLs.
regabidefer is already enabled everywhere. regabig is no-op on
ARM64 as it already has a G register. regabiargs is enabled in
this CL.

Go1 benchmarks results (GOEXPERIMENT=regabi vs. none, on macOS/ARM64):

name                     old time/op    new time/op     delta
BinaryTree17-8              1.20s ± 1%      1.02s ± 0%  -15.08%  (p=0.000 n=9+9)
Fannkuch11-8                1.55s ± 0%      1.57s ± 0%   +1.53%  (p=0.000 n=9+8)
FmtFprintfEmpty-8          22.5ns ± 3%     14.7ns ± 1%  -34.47%  (p=0.000 n=10+8)
FmtFprintfString-8         38.4ns ± 0%     28.8ns ± 0%  -24.99%  (p=0.000 n=9+9)
FmtFprintfInt-8            38.7ns ± 2%     34.5ns ± 0%  -10.79%  (p=0.000 n=10+7)
FmtFprintfIntInt-8         61.1ns ± 1%     57.9ns ± 0%   -5.23%  (p=0.000 n=10+8)
FmtFprintfPrefixedInt-8    69.9ns ± 0%     64.4ns ± 0%   -7.78%  (p=0.000 n=8+8)
FmtFprintfFloat-8           106ns ± 0%       76ns ± 0%  -28.12%  (p=0.000 n=7+10)
FmtManyArgs-8               273ns ± 0%      236ns ± 1%  -13.57%  (p=0.000 n=9+10)
GobDecode-8                3.09ms ± 1%     2.02ms ± 0%  -34.70%  (p=0.000 n=9+10)
GobEncode-8                2.45ms ± 1%     1.44ms ± 1%  -41.26%  (p=0.000 n=10+10)
Gzip-8                      128ms ± 0%      124ms ± 0%   -2.89%  (p=0.000 n=7+8)
Gunzip-8                   23.6ms ± 1%     19.8ms ± 0%  -16.15%  (p=0.000 n=10+9)
HTTPClientServer-8         27.4µs ± 1%     26.3µs ± 0%   -4.05%  (p=0.000 n=10+10)
JSONEncode-8               4.47ms ± 1%     3.45ms ± 1%  -22.73%  (p=0.000 n=10+9)
JSONDecode-8               21.5ms ± 0%     17.2ms ± 0%  -19.78%  (p=0.000 n=9+9)
Mandelbrot200-8            2.33ms ± 1%     2.33ms ± 1%     ~     (p=0.842 n=9+10)
GoParse-8                  1.62ms ± 1%     1.32ms ± 1%  -18.67%  (p=0.000 n=10+10)
RegexpMatchEasy0_32-8      33.1ns ± 0%     26.3ns ± 0%  -20.50%  (p=0.000 n=8+10)
RegexpMatchEasy0_1K-8       121ns ± 6%      121ns ± 8%     ~     (p=0.926 n=10+10)
RegexpMatchEasy1_32-8      31.4ns ± 0%     24.7ns ± 0%  -21.50%  (p=0.000 n=9+10)
RegexpMatchEasy1_1K-8       177ns ± 0%      140ns ± 0%  -20.70%  (p=0.000 n=10+9)
RegexpMatchMedium_32-8     3.02ns ± 3%     2.12ns ± 0%  -29.73%  (p=0.000 n=10+10)
RegexpMatchMedium_1K-8     19.8µs ± 2%     17.1µs ± 0%  -13.50%  (p=0.000 n=9+9)
RegexpMatchHard_32-8        940ns ± 0%      872ns ± 0%   -7.20%  (p=0.000 n=9+8)
RegexpMatchHard_1K-8       28.5µs ± 1%     26.5µs ± 0%   -7.06%  (p=0.000 n=10+10)
Revcomp-8                   186ms ± 1%      179ms ± 1%   -3.66%  (p=0.000 n=10+10)
Template-8                 30.3ms ± 0%     22.3ms ± 0%  -26.58%  (p=0.000 n=8+9)
TimeParse-8                 133ns ± 0%      117ns ± 0%  -12.40%  (p=0.000 n=10+10)
TimeFormat-8                176ns ± 0%      141ns ± 0%  -19.92%  (p=0.000 n=8+9)
[Geo mean]                 21.4µs          17.8µs       -16.81%

name                     old speed      new speed       delta
GobDecode-8               249MB/s ± 1%    381MB/s ± 0%  +53.13%  (p=0.000 n=9+10)
GobEncode-8               314MB/s ± 1%    534MB/s ± 1%  +70.25%  (p=0.000 n=10+10)
Gzip-8                    152MB/s ± 0%    156MB/s ± 0%   +2.97%  (p=0.000 n=7+8)
Gunzip-8                  822MB/s ± 1%    981MB/s ± 0%  +19.26%  (p=0.000 n=10+9)
JSONEncode-8              434MB/s ± 1%    562MB/s ± 1%  +29.41%  (p=0.000 n=10+9)
JSONDecode-8             90.3MB/s ± 0%  112.5MB/s ± 0%  +24.66%  (p=0.000 n=9+9)
GoParse-8                35.7MB/s ± 1%   43.9MB/s ± 1%  +22.96%  (p=0.000 n=10+10)
RegexpMatchEasy0_32-8     967MB/s ± 0%   1216MB/s ± 0%  +25.78%  (p=0.000 n=8+10)
RegexpMatchEasy0_1K-8    8.46GB/s ± 6%   8.45GB/s ± 7%     ~     (p=0.912 n=10+10)
RegexpMatchEasy1_32-8    1.02GB/s ± 0%   1.30GB/s ± 0%  +27.40%  (p=0.000 n=9+10)
RegexpMatchEasy1_1K-8    5.78GB/s ± 0%   7.29GB/s ± 0%  +26.10%  (p=0.000 n=10+9)
RegexpMatchMedium_32-8    331MB/s ± 2%    471MB/s ± 0%  +42.29%  (p=0.000 n=10+10)
RegexpMatchMedium_1K-8   51.7MB/s ± 2%   59.8MB/s ± 0%…

* Fix conflicts

- Resolve compilation errors caused by undefined type or conflicting type
- Remove unsupported keyword used
- Replace internal package with local package
- Support Go 1.16 with fixed build flags on cpu and testenv
- Disable broken tests
- Remove unsupported suites

* uncomment broken tests

- uncomment broken tests
- skipped for now, a patch may require extensive work to come

Co-authored-by: Tobias Klauser <tklauser@distanz.ch>
Co-authored-by: Matt T. Proud <matt.proud@gmail.com>
Co-authored-by: Matthew Dempsky <mdempsky@google.com>
Co-authored-by: Andy Pan <panjf2000@gmail.com>
Co-authored-by: John Bampton <jbampton@gmail.com>
Co-authored-by: Josh Bleecher Snyder <josharian@gmail.com>
Co-authored-by: Johan Brandhorst <johan.brandhorst@gmail.com>
Co-authored-by: Katie Hockman <katie@golang.org>
Co-authored-by: Austin Clements <austin@google.com>
Co-authored-by: Jay Conrod <jayconrod@google.com>
Co-authored-by: KimMachineGun <geon0250@gmail.com>
Co-authored-by: Ian Lance Taylor <iant@golang.org>
Co-authored-by: Naman Gera <namangera15@gmail.com>
Co-authored-by: Manlio Perillo <manlio.perillo@gmail.com>
Co-authored-by: Michael Anthony Knyszek <mknyszek@google.com>
Co-authored-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Co-authored-by: Russ Cox <rsc@golang.org>
Co-authored-by: HowJMay <vulxj0j8j8@gmail.com>
Co-authored-by: Cherry Zhang <cherryyz@google.com>
Co-authored-by: Roland Shoemaker <roland@golang.org>
Co-authored-by: Filippo Valsorda <filippo@golang.org>
Co-authored-by: Keith Randall <khr@golang.org>
Co-authored-by: cuishuang <imcusg@gmail.com>
Co-authored-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Co-authored-by: makdon <makdon@makdon.me>
Co-authored-by: Carlos Amedee <carlos@golang.org>
Co-authored-by: Dmitri Shuralyov <dmitshur@golang.org>
Co-authored-by: Matt Layher <mdlayher@gmail.com>
Co-authored-by: Martin Möhrmann <martin@golang.org>
Co-authored-by: vinckr <vincent@ory.sh>
Co-authored-by: Brad Fitzpatrick <bradfitz@golang.org>
Co-authored-by: nimelehin <nimelehin@gmail.com>
Co-authored-by: Amelia Downs <adowns@vmware.com>
Co-authored-by: nicksherron <nsherron90@gmail.com>
Co-authored-by: Koichi Shiraishi <zchee.io@gmail.com>
Co-authored-by: Archana R <aravind5@in.ibm.com>
Co-authored-by: Agniva De Sarker <agnivade@yahoo.co.in>
Co-authored-by: Bryan C. Mills <bcmills@google.com>
Co-authored-by: David Crawshaw <crawshaw@golang.org>
Co-authored-by: Dan Kortschak <dan@kortschak.io>
Co-authored-by: Ayan George <ayan@ayan.net>
Co-authored-by: Kevin Burke <kevin@burke.dev>
Co-authored-by: Michael Matloob <matloob@golang.org>
Co-authored-by: Steven Johnstone <steven.james.johnstone@gmail.com>
Co-authored-by: Tatiana Bradley <tatiana@golang.org>
Co-authored-by: David Taylor <tinystatemachine@gmail.com>
2022-10-17 15:09:52 -06:00
Roland Shoemaker
f77df846bf crypto/tls: reject duplicate extensions
Does what it says on the tin.

Fixes #51088

Change-Id: I12c0fa6bba1c1ce96c1ad31ba387c77a93f801c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/384894
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
2022-04-21 16:18:13 +00:00
Filippo Valsorda
3ada52a07f crypto/tls: use cryptobyte.NewFixedBuilder
Change-Id: Ia2a9465680e766336dae34f5d2b3cb412185bf1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/318131
Trust: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
2021-10-04 17:17:11 +00:00
Olivier Poitrey
e580b52d55 crypto/tls: send ec_points_format extension in ServerHello
Follow the recommandation from RFC 8422, section 5.1.2 of sending back the
ec_points_format extension when requested by the client. This is to fix
some clients declining the handshake if omitted.

Fixes #31943

Change-Id: I7b04dbac6f9af75cda094073defe081e1e9a295d
Reviewed-on: https://go-review.googlesource.com/c/go/+/176418
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Olivier Poitrey <rs@rhapsodyk.net>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-31 15:14:45 +00:00
Brad Fitzpatrick
6b5dc9f4ba crypto/tls: remove NPN support
RELNOTE=yes

Fixes #28362

Change-Id: I43813c0c17bbe6c4cbb4d1f121518c434b3f5aa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/174329
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2019-10-04 18:07:46 +00:00
Sergey Frolov
ceee37ab69 Merge branch golang crypto/tls upstream 2019-08-22 17:42:47 -06:00
Brad Fitzpatrick
3ffb0577c5 crypto/tls, crypto/x509: update spelling of marshal*
Per https://golang.org/wiki/Spelling and CL 33017.

Change-Id: Ia813a81d25603883114c4e4b6997eb560d6a3690
Reviewed-on: https://go-review.googlesource.com/c/go/+/172457
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2019-04-16 21:54:01 +00:00
Bryan C. Mills
30581d3628 all: move internal/x to vendor/golang.org/x and revendor using 'go mod vendor'
This also updates the vendored-in versions of several packages: 'go
mod vendor' selects a consistent version of each module, but we had
previously vendored an ad-hoc selection of packages.

Notably, x/crypto/hkdf was previously vendored in at a much newer
commit than the rest of x/crypto. Bringing the rest of x/crypto up to
that commit introduced an import of golang.org/x/sys/cpu, which broke
the js/wasm build, requiring an upgrade of x/sys to pick up CL 165749.

Updates #30228
Updates #30241
Updates #25822

Change-Id: I5b3dbc232b7e6a048a158cbd8d36137af1efb711
Reviewed-on: https://go-review.googlesource.com/c/go/+/164623
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2019-03-11 20:28:54 +00:00
Sergey Frolov
23b79cad14 Merge TLS 1.3 from upstream
uTLS not adapted to this change yet,
uTLS changes will be in a separate commmit.
2018-12-03 12:55:53 -07:00
Bryan C. Mills
6571d32361 vendor/golang_org/x: move to internal/x
Packages in vendor/ directories have a "vendor/" path prefix in GOPATH
mode, but intentionally do not in module mode. Since the import path
is embedded in the compiled output, changing that path invalidates
cache entries and causes cmd/go to try to rebuild (and reinstall) the
vendored libraries, which will fail if the directory containing those
libraries is read-only.

If I understood correctly, this is the approach Russ suggested as an
alternative to https://golang.org/cl/136138.

Fixes #27285
Fixes #26988

Change-Id: I8a2507fa892b84cde0a803aaa79e460723da572b
Reviewed-on: https://go-review.googlesource.com/c/147443
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2018-11-29 15:42:16 +00:00
Filippo Valsorda
b523d280e4 crypto/tls: implement TLS 1.3 client authentication
Note that the SignatureSchemes passed to GetClientCertificate in TLS 1.2
are now filtered by the requested certificate type. This feels like an
improvement anyway, and the full list can be surfaced as well when
support for signature_algorithms_cert is added, which actually matches
the semantics of the CertificateRequest signature_algorithms in TLS 1.2.

Also, note a subtle behavior change in server side resumption: if a
certificate is requested but not required, and the resumed session did
not include one, it used not to invoke VerifyPeerCertificate. However,
if the resumed session did include a certificate, it would. (If a
certificate was required but not in the session, the session is rejected
in checkForResumption.) This inconsistency could be unexpected, even
dangerous, so now VerifyPeerCertificate is always invoked. Still not
consistent with the client behavior, which does not ever invoke
VerifyPeerCertificate on resumption, but it felt too surprising to
entirely change either.

Updates #9671

Change-Id: Ib2b0dbc30e659208dca3ac07d6c687a407d7aaaf
Reviewed-on: https://go-review.googlesource.com/c/147599
Reviewed-by: Adam Langley <agl@golang.org>
2018-11-12 20:43:55 +00:00
Filippo Valsorda
166c58b85c crypto/tls: implement TLS 1.3 PSK authentication (server side)
Added some assertions to testHandshake, but avoided checking the error
of one of the Close() because the one that would lose the race would
write the closeNotify to a connection closed on the other side which is
broken on js/wasm (#28650). Moved that Close() after the chan sync to
ensure it happens second.

Accepting a ticket with client certificates when NoClientCert is
configured is probably not a problem, and we could hide them to avoid
confusing the application, but the current behavior is to skip the
ticket, and I'd rather keep behavior changes to a minimum.

Updates #9671

Change-Id: I93b56e44ddfe3d48c2bef52c83285ba2f46f297a
Reviewed-on: https://go-review.googlesource.com/c/147445
Reviewed-by: Adam Langley <agl@golang.org>
2018-11-12 20:43:35 +00:00
Filippo Valsorda
dc9021e679 crypto/tls: implement TLS 1.3 PSK authentication (client side)
Also check original certificate validity when resuming TLS 1.0–1.2. Will
refuse to resume a session if the certificate is expired or if the
original connection had InsecureSkipVerify and the resumed one doesn't.

Support only PSK+DHE to protect forward secrecy even with lack of a
strong session ticket rotation story.

Tested with NSS because s_server does not provide any way of getting the
same session ticket key across invocations. Will self-test like TLS
1.0–1.2 once server side is implemented.

Incorporates CL 128477 by @santoshankr.

Fixes #24919
Updates #9671

Change-Id: Id3eaa5b6c77544a1357668bf9ff255f3420ecc34
Reviewed-on: https://go-review.googlesource.com/c/147420
Reviewed-by: Adam Langley <agl@golang.org>
2018-11-12 20:43:23 +00:00
Filippo Valsorda
376ff45dc1 crypto/tls: implement TLS 1.3 server handshake (base)
Implement a basic TLS 1.3 server handshake, only enabled if explicitly
requested with MaxVersion.

This CL intentionally leaves for future CLs:
  - PSK modes and resumption
  - client authentication
  - compatibility mode ChangeCipherSpecs
  - early data skipping
  - post-handshake messages
  - downgrade protection
  - KeyLogWriter support
  - TLS_FALLBACK_SCSV processing

It also leaves a few areas up for a wider refactor (maybe in Go 1.13):
  - the certificate selection logic can be significantly improved,
    including supporting and surfacing signature_algorithms_cert, but
    this isn't new in TLS 1.3 (see comment in processClientHello)
  - handshake_server_tls13.go can be dried up and broken into more
    meaningful, smaller functions, but it felt premature to do before
    PSK and client auth support
  - the monstrous ClientHello equality check in doHelloRetryRequest can
    get both cleaner and more complete with collaboration from the
    parsing layer, which can come at the same time as extension
    duplicates detection

Updates #9671

Change-Id: Id9db2b6ecc2eea21bf9b59b6d1d9c84a7435151c
Reviewed-on: https://go-review.googlesource.com/c/147017
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
2018-11-02 22:07:43 +00:00
Filippo Valsorda
2c3ff7ba06 crypto/tls: implement TLS 1.3 client handshake (base)
Implement a basic TLS 1.3 client handshake, only enabled if explicitly
requested with MaxVersion.

This CL intentionally leaves for future CLs:
  - PSK modes and resumption
  - client authentication
  - post-handshake messages
  - downgrade protection
  - KeyLogWriter support

Updates #9671

Change-Id: Ieb6130fb6f25aea4f0d39e3a2448dfc942e1de7a
Reviewed-on: https://go-review.googlesource.com/c/146559
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
2018-11-02 22:07:02 +00:00
Filippo Valsorda
d4e9432552 crypto/tls: implement TLS 1.3 version-specific messages
Note that there is significant code duplication due to extensions with
the same format appearing in different messages in TLS 1.3. This will be
cleaned up in a future refactor once CL 145317 is merged.

Enforcing the presence/absence of each extension in each message is left
to the upper layer, based on both protocol version and extensions
advertised in CH and CR. Duplicated extensions and unknown extensions in
SH, EE, HRR, and CT will be tightened up in a future CL.

The TLS 1.2 CertificateStatus message was restricted to accepting only
type OCSP as any other type (none of which are specified so far) would
have to be negotiated.

Updates #9671

Change-Id: I7c42394c5cc0af01faa84b9b9f25fdc6e7cfbb9e
Reviewed-on: https://go-review.googlesource.com/c/145477
Reviewed-by: Adam Langley <agl@golang.org>
2018-11-02 22:04:51 +00:00
Filippo Valsorda
4900f4cb3a crypto/tls: implement TLS 1.3 extensions for ClientHello and ServerHello
Updates #9671

Change-Id: Ia68224aca866dc3c98af1fccbe56bfb3f22da9f6
Reviewed-on: https://go-review.googlesource.com/c/144578
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
2018-11-02 21:54:22 +00:00
Filippo Valsorda
8d011ce74c crypto/tls: rewrite some messages with golang.org/x/crypto/cryptobyte
As a first round, rewrite those handshake message types which can be
reused in TLS 1.3 with golang.org/x/crypto/cryptobyte. All other types
changed significantly in TLS 1.3 and will require separate
implementations. They will be ported to cryptobyte in a later CL.

The only semantic changes should be enforcing the random length on the
marshaling side, enforcing a couple more "must not be empty" on the
unmarshaling side, and checking the rest of the SNI list even if we only
take the first.

Change-Id: Idd2ced60c558fafcf02ee489195b6f3b4735fe22
Reviewed-on: https://go-review.googlesource.com/c/144115
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
2018-10-29 17:05:55 +00:00
Filippo Valsorda
e58787c05a crypto/tls: replace custom equal implementations with reflect.DeepEqual
The equal methods were only there for testing, and I remember regularly
getting them wrong while developing tls-tris. Replace them with simple
reflect.DeepEqual calls.

The only special thing that equal() would do is ignore the difference
between a nil and a zero-length slice. Fixed the Generate methods so
that they create the same value that unmarshal will decode. The
difference is not important: it wasn't tested, all checks are
"len(slice) > 0", and all cases in which presence matters are
accompanied by a boolean.

Change-Id: Iaabf56ea17c2406b5107c808c32f6c85b611aaa8
Reviewed-on: https://go-review.googlesource.com/c/144114
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
2018-10-25 19:07:36 +00:00
Filippo Valsorda
db3edf68fa crypto/tls,crypto/x509: normalize RFC references
Use the format "RFC XXXX, Section X.X" (or "Appendix Y.X") as it fits
more properly in prose than a link, is more future-proof, and as there
are multiple ways to render an RFC. Capital "S" to follow the quoting
standard of RFCs themselves.

Applied the new goimports grouping to all files in those packages, too.

Change-Id: I01267bb3a3b02664f8f822e97b129075bb14d404
Reviewed-on: https://go-review.googlesource.com/c/141918
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2018-10-17 03:58:03 +00:00
Sergey Frolov
47f47cf66d Update EMS comment: implemented due to popularity 2018-06-21 13:55:02 -04:00
Sergey Frolov
112951f6d7 Refactor: enable flexible external configuration 2018-06-21 13:55:02 -04:00
Sergey Frolov
9656990081 Merge branch 'golang-tls-upstream', remove Android
I tested all fingerprints and confirmed that Chrome and Firefox are
working as intended.
Android fingerprints were grossly unpopular, which could a result of
incorrect merge, but either way we'll remove them for now.
2018-06-15 17:25:21 -04:00
Tim Cooper
99371c4e8c all: update comment URLs from HTTP to HTTPS, where possible
Each URL was manually verified to ensure it did not serve up incorrect
content.

Change-Id: I4dc846227af95a73ee9a3074d0c379ff0fa955df
Reviewed-on: https://go-review.googlesource.com/115798
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2018-06-01 21:52:00 +00:00
Peter Wu
b3caca679b crypto/tls: replace signatureAndHash by SignatureScheme.
Consolidate the signature and hash fields (SignatureAndHashAlgorithm in
TLS 1.2) into a single uint16 (SignatureScheme in TLS 1.3 draft 21).
This makes it easier to add RSASSA-PSS for TLS 1.2 in the future.

Fields were named like "signatureAlgorithm" rather than
"signatureScheme" since that name is also used throughout the 1.3 draft.

The only new public symbol is ECDSAWithSHA1, other than that this is an
internal change with no new functionality.

Change-Id: Iba63d262ab1af895420583ac9e302d9705a7e0f0
Reviewed-on: https://go-review.googlesource.com/62210
Reviewed-by: Adam Langley <agl@golang.org>
2017-10-13 23:25:03 +00:00
Sergey Frolov
ab61409e7d Add ems 2017-08-16 11:54:20 -04:00
Adam Langley
905f7aea38 crypto/tls: reject SNI values with a trailing dot.
SNI values may not include a trailing dot according to
https://tools.ietf.org/html/rfc6066#section-3. Although crypto/tls
handled this correctly as a client, it didn't reject this as a server.

This change makes sending an SNI value with a trailing dot a fatal
error.

Updates #18114.

Change-Id: Ib7897ab40e98d4a7a4646ff8469a55233621f631
Reviewed-on: https://go-review.googlesource.com/33904
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-02-01 21:59:57 +00:00
Adam Langley
e0a9081770 crypto/tls: reject zero-length SCTs.
The SignedCertificateTimestampList[1] specifies that both the list and
each element must not be empty. Checking that the list is not empty was
handled in [2] and this change checks that the SCTs themselves are not
zero-length.

[1] https://tools.ietf.org/html/rfc6962#section-3.3
[2] https://golang.org/cl/33265

Change-Id: Iabaae7a15f6d111eb079e5086e0bd2005fae9e48
Reviewed-on: https://go-review.googlesource.com/33355
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-11-17 20:53:01 +00:00
woodsaj
62b1adc302 crypto/tls: reject CT extension with no SCTs included
When the CT extension is enabled but no SCTs are present, the existing
code calls "continue" which causes resizing the data byte slice to be
skipped. In fact, such extensions should be rejected.

Fixes #17958

Change-Id: Iad12da10d1ea72d04ae2e1012c28bb2636f06bcd
Reviewed-on: https://go-review.googlesource.com/33265
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-11-17 20:21:48 +00:00
Adam Langley
e041919535 crypto/tls: allow renegotiation to be handled by a client.
This change adds Config.Renegotiation which controls whether a TLS
client will accept renegotiation requests from a server. This is used,
for example, by some web servers that wish to “add” a client certificate
to an HTTPS connection.

This is disabled by default because it significantly complicates the
state machine.

Originally, handshakeMutex was taken before locking either Conn.in or
Conn.out. However, if renegotiation is permitted then a handshake may
be triggered during a Read() call. If Conn.in were unlocked before
taking handshakeMutex then a concurrent Read() call could see an
intermediate state and trigger an error. Thus handshakeMutex is now
locked after Conn.in and the handshake functions assume that Conn.in is
locked for the duration of the handshake.

Additionally, handshakeMutex used to protect Conn.out also. With the
possibility of renegotiation that's no longer viable and so
writeRecordLocked has been split off.

Fixes #5742.

Change-Id: I935914db1f185d507ff39bba8274c148d756a1c8
Reviewed-on: https://go-review.googlesource.com/22475
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2016-04-28 17:56:28 +00:00
Matthew Dempsky
ef268493cd all: remove unnecessary type conversions
cmd and runtime were handled separately, and I'm intentionally skipped
syscall. This is the rest of the standard library.

CL generated mechanically with github.com/mdempsky/unconvert.

Change-Id: I9e0eff886974dedc37adb93f602064b83e469122
Reviewed-on: https://go-review.googlesource.com/22104
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-15 07:31:45 +00:00
Emmanuel Odeke
15b10f5314 crypto/tls: minor refactors for readability
Change-Id: I93e73f16474b4b31f7097af2f9479822dfc34c5c
Reviewed-on: https://go-review.googlesource.com/20678
Reviewed-by: Adam Langley <agl@golang.org>
2016-03-14 21:17:37 +00:00
Adam Langley
2801bd2c2d crypto/tls: reject ServerHellos with empty ALPN protocols.
https://tools.ietf.org/html/rfc7301#section-3.1 specifies that a
ProtocolName may not be empty. This change enforces this for ServerHello
messages—it's already enforced for ClientHello messages.

Change-Id: Ic5a5be6bebf07fba90a3cabd10b07ab7b4337f53
Reviewed-on: https://go-review.googlesource.com/12003
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-08-30 15:33:36 +00:00
Adam Langley
8fbca1d423 crypto/tls: fix parsing of SNI extension.
The previous code had a brain fart: it took one of the length prefixes
as an element count, not a length. This didn't actually affect anything
because the loop stops as soon as it finds a hostname element, and the
hostname element is always the first and only element. (No other element
types have ever been defined.)

This change fixes the parsing in case SNI is ever changed in the future.

Fixes #10793.

Change-Id: Iafdf3381942bc22b1f33595315c53dc6cc2e9f0f
Reviewed-on: https://go-review.googlesource.com/11059
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-06-14 17:55:53 +00:00
Jonathan Rudenberg
cf04082452 crypto/tls: add support for Certificate Transparency
This change adds support for serving and receiving Signed Certificate
Timestamps as described in RFC 6962.

The server is now capable of serving SCTs listed in the Certificate
structure. The client now asks for SCTs and, if any are received,
they are exposed in the ConnectionState structure.

Fixes #10201

Change-Id: Ib3adae98cb4f173bc85cec04d2bdd3aa0fec70bb
Reviewed-on: https://go-review.googlesource.com/8988
Reviewed-by: Adam Langley <agl@golang.org>
Run-TryBot: Adam Langley <agl@golang.org>
Reviewed-by: Jonathan Rudenberg <jonathan@titanous.com>
2015-04-26 16:53:11 +00:00
Adam Langley
24c9051f97 crypto/tls: fix renegotiation extension.
There are two methods by which TLS clients signal the renegotiation
extension: either a special cipher suite value or a TLS extension.

It appears that I left debugging code in when I landed support for the
extension because there's a "+ 1" in the switch statement that shouldn't
be there.

The effect of this is very small, but it will break Firefox if
security.ssl.require_safe_negotiation is enabled in about:config.
(Although almost nobody does this.)

This change fixes the original bug and adds a test. Sadly the test is a
little complex because there's no OpenSSL s_client option that mirrors
that behaviour of require_safe_negotiation.

Change-Id: Ia6925c7d9bbc0713e7104228a57d2d61d537c07a
Reviewed-on: https://go-review.googlesource.com/1900
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-01-06 19:50:07 +00:00