crypto/tls: align FIPS-only mode with BoringSSL policy

This enables TLS 1.3, disables P-521, and disables non-ECDHE suites.

Fixes #64717
Updates #62372

Change-Id: I3a65b239ef0198bbdbe5e55e0810e7128f90a091
Reviewed-on: https://go-review.googlesource.com/c/go/+/549975
Reviewed-by: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Filippo Valsorda 2023-12-14 22:13:29 +01:00 committed by Roland Shoemaker
parent 1be719a625
commit 035b9d2bbf
8 changed files with 100 additions and 48 deletions

View file

@ -45,10 +45,6 @@ type serverHandshakeStateTLS13 struct {
func (hs *serverHandshakeStateTLS13) handshake() error {
c := hs.c
if needFIPS() {
return errors.New("tls: internal error: TLS 1.3 reached in FIPS mode")
}
// For an overview of the TLS 1.3 handshake, see RFC 8446, Section 2.
if err := hs.processClientHello(); err != nil {
return err
@ -163,6 +159,9 @@ func (hs *serverHandshakeStateTLS13) processClientHello() error {
if !hasAESGCMHardwareSupport || !aesgcmPreferred(hs.clientHello.cipherSuites) {
preferenceList = defaultCipherSuitesTLS13NoAES
}
if needFIPS() {
preferenceList = defaultCipherSuitesTLS13FIPS
}
for _, suiteID := range preferenceList {
hs.suite = mutualCipherSuiteTLS13(hs.clientHello.cipherSuites, suiteID)
if hs.suite != nil {