go/doc/next/6-stdlib/99-minor/crypto/tls/68500.md

The TLS server now supports Encrypted Client Hello (ECH). This feature can be
enabled by populating the [Config.EncryptedClientHelloKeys] field.
crypto/tls: add server-side ECH Adds support for server-side ECH. We make a couple of implementation decisions that are not completely in-line with the spec. In particular, we don't enforce that the SNI matches the ECHConfig public_name, and we implement a hybrid shared/backend mode (rather than shared or split mode, as described in Section 7). Both of these match the behavior of BoringSSL. The hybrid server mode will either act as a shared mode server, where-in the server accepts "outer" client hellos and unwraps them before processing the "inner" hello, or accepts bare "inner" hellos initially. This lets the server operate either transparently as a shared mode server, or a backend server, in Section 7 terminology. This seems like the best implementation choice for a TLS library. Fixes #68500 Change-Id: Ife69db7c1886610742e95e76b0ca92587e6d7ed4 Reviewed-on: https://go-review.googlesource.com/c/go/+/623576 Reviewed-by: Filippo Valsorda <filippo@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Daniel McCarney <daniel@binaryparadox.net> Auto-Submit: Roland Shoemaker <roland@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> 2024-10-29 20:22:27 -07:00			`The TLS server now supports Encrypted Client Hello (ECH). This feature can be`
			`enabled by populating the [Config.EncryptedClientHelloKeys] field.`