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Daniel McCarney 992d154717 crypto/tls: update TLS 1.3 client compression validation
Unlike in earlier TLS versions, in TLS 1.3 when processing a server
hello the legacy_compression_method MUST have the value 0. It is no
longer a parameter that offers a choice of compression method.

With this in mind, it seems more appropriate to return a decode error
when we encounter a non-zero compression method in a server hello
message. We haven't found a parameter value we reject, we've found
a message that doesn't decode according to its specification.

Making this change also aligns with BoringSSL and allows enabling the
TLS13-HRR-InvalidCompressionMethod bogo test.

Updates #72006

Change-Id: I27a2cd231e4b8762b0d9e2dbd3d8ddd5b87fd5c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/669156
Reviewed-by: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2025-05-09 13:38:31 -07:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api crypto,crypto/x509: implement MessageSigner 2025-05-08 07:46:12 -07:00
doc crypto,crypto/x509: implement MessageSigner 2025-05-08 07:46:12 -07:00
lib lib/time: build with Ubuntu backward compatibility options 2025-02-06 17:10:15 -08:00
misc misc/linkcheck: remove unused tool 2025-03-20 04:38:55 -07:00
src crypto/tls: update TLS 1.3 client compression validation 2025-05-09 13:38:31 -07:00
test runtime: schedule cleanups across multiple goroutines 2025-05-08 11:10:33 -07:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: fix CC BY license name 2024-07-22 17:45:27 +00:00
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +00:00

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