This CL adds an initial implementation of the ECH server, with pieces of
the client in BoGo as necessary for testing. In particular, the server
supports ClientHelloInner compression with ech_outer_extensions. When
ECH decryption fails, it can send retry_configs back to the client.
This server passes the "ech-accept" and "ech-reject" test cases in
tls-interop-runner[0] when tested against both the cloudflare-go and nss
clients. For reproducibility, I started with the main branch at commit
707604c262d8bcf3e944ed1d5a675077304732ce and updated the endpoint's
script to pass the server's ECHConfig and private key to the boringssl
tool.
Follow-up CLs will update HPKE to the latest draft and catch us up to
draft-10.
[0]: https://github.com/xvzcf/tls-interop-runner
Bug: 275
Change-Id: I49be35af46d1fd5dd9c62252f07d0bae179381ab
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/45285
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
The client handshake currently defers creating the finishedHash and
writing things into the transcript, which is a little annoying for ECH.
In preparation for simplifying that, one nuisance is that we retain both
hello and helloBytes, across a long span of code. helloBytes is *almost*
the same as hello.marshal() except:
- When we send a V2ClientHello, helloBytes records that we serialized
the ClientHello completely differently.
- For the JDK11 workaround tests, helloBytes records that we swapped out
the ClientHello entirely.
- By the time we finally write helloBytes into the transcript, hello may
have been updated to the second ClientHello.
This CL resolves the first two issues. It replaces the v2ClientHelloMsg
with an option when serializing the clientHelloMsg, and it has the
ClientHello replacement function return a clientHelloMsg instead of a
[]byte. (This is a little weird because we're conflating parsed and
constructed ClientHellos, but ah well.)
A follow-up CL will remove the differed transcript bits and we'll
actually be able to drop helloBytes.
Change-Id: Ib82ac216604e2c4bf421277e57aa5fd3b4cef161
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/46629
Reviewed-by: Adam Langley <agl@google.com>
Re-encoding a message does not necessarily give back the same value.
Bug: 275
Change-Id: I52cddd6152445b70579cbe03525898383bee211d
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/46644
Reviewed-by: David Benjamin <davidben@google.com>
Reviewed-by: Dan McArdle <dmcardle@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
We only need to implement enough of SSL 3.0 to test that the shim does
not.
Change-Id: I25cb48e407f1bc458bbdb3544b9df9fdfbc3d9c9
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/46625
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
In early TLS 1.3 drafts, HelloRetryRequest was a dedicated message type.
Our HelloRetryRequest handling in runner is still based on this. Along
the way, remove the SendServerHelloAsHelloRetryRequest test, since
that's just a generic unexpected message type now.
Change-Id: Idd9c54d0ab66d962657af9a53849c3928f78ce5c
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/46585
Reviewed-by: Adam Langley <agl@google.com>
A linter was complaining about some instance, so just fix the lot of it.
Change-Id: I7e23cbada6e42da887d740b84a05de9f104a86ab
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/45284
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
IETF QUIC draft 33 is replacing the TLS extension
codepoint for QUIC transport parameters from 0xffa5
to 57. To support multiple versions of Chrome, we
need to support both codepoints in BoringSSL. This
CL adds support for the new codepoint in a way that
can be enabled on individual connections.
Note that when BoringSSL is not in QUIC mode, it
will error if it sees the new codepoint as a server
but it will ignore the legacy codepoint as that could
be a different private usage of that codepoint.
Change-Id: I314f8f0b169cedd96eeccc42b44153e97044388c
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/44704
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
This CL implements the backend server behavior described in Section 7.2
of draft-ietf-tls-esni-09.
Bug: 275
Change-Id: I2e162673ce564db0cb75fc9b71ef11ed15037f4b
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/43924
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
(Original CL by svaldez, reworked by davidben.)
Change-Id: I8570808fa5e96a1c9e6e03c4877039a22e73254f
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/42404
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
The Go TLS implementation, at the time runner forked, had custom
testing-only equal methods on all the handshake messages. We've since
removed all of them except for ClientHello, where we repurposed the
function to check ClientHello consistency on HelloVerifyRequest and
HelloRetryRequest.
These are tedious to update. Upstream has since replaced them with
reflect.DeepEqual, but the comparison we want is even tighter. Even
unknown extensions aren't allowed to change. Replace the check with a
custom one that works on the byte serialization and remove
clientHelloMsg.equal.
Along the way, I've fixed the HRR PSK identity logic to match the spec a
bit more and check binders more consistently.
Change-Id: Ib39e8791201c42d37e304ae5110c7aeed62c8b3f
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/43364
Reviewed-by: Adam Langley <agl@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
This CL replaces clientHelloMsg's npnAfterAlpn and pskBinderFirst fields
with a new field: prefixExtensions. The extensions in prefixExtensions
are tried first when marshalling clientHelloMsg.
The ability to control extensions' marshalling order will make it
simpler to implement the "outer_extensions" behavior defined in
draft-ietf-tls-esni-07.
Bug: 275
Change-Id: Ib6dcc1e6fa0281f312cb65a9e204415c3f3ef2c6
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/43064
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
This version adds signature algorithms to the extension
Change-Id: I91dc78d33ee81cb7a6221c7bdeefc8ea460a2d6c
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/42424
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Daniel McArdle
David Benjamin
David Schinazi
Steven Valdez
Watson Ladd
Adam Langley