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>
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>
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>
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>
