This extension will be used to measure the latency impact of potentially
sending a post-quantum key share by default. At this time it's purely
measuring the impact of the client sending the key share, not the server
replying with a ciphertext.
We could use the existing padding extension for this but that extension
doesn't allow the server to echo it, so we would need a different
extension in the future anyway. Thus we just create one now.
We can assume that modern clients will be using TLS 1.3 by the time that
PQ key-exchange is established and thus the key share will be sent in
all ClientHello messages. However, since TLS 1.3 isn't quite here yet,
this extension is also sent for TLS 1.0–1.2 ClientHellos. The latency
impact should be the same either way.
Change-Id: Ie4a17551f6589b28505797e8c54cddbe3338dfe5
Reviewed-on: https://boringssl-review.googlesource.com/24585
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TLS 1.3 includes a server-random-based anti-downgrade signal, as a
workaround for TLS 1.2's ServerKeyExchange signature failing to cover
the entire handshake. However, because TLS 1.3 draft versions are each
doomed to die, we cannot deploy it until the final RFC. (Suppose a
draft-TLS-1.3 client checked the signal and spoke to a final-TLS-1.3
server. The server would correctly negotiate TLS 1.2 and send the
signal. But the client would then break. An anologous situation exists
with reversed roles.)
However, it appears that Cisco devices have non-compliant TLS 1.2
implementations[1] and copy over another server's server-random when
acting as a TLS terminator (client and server back-to-back).
Hopefully they are the only ones doing this. Implement a
measurement-only version with a different value. This sentinel must not
be enforced, but it will tell us whether enforcing it will cause
problems.
[1] https://www.ietf.org/mail-archive/web/tls/current/msg25168.html
Bug: 226
Change-Id: I976880bdb2ef26f51592b2f6b3b97664342679c8
Reviewed-on: https://boringssl-review.googlesource.com/24284
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Upgrade-Note: SSL_CTX_set_tls13_variant(tls13_experiment) on the server
should switch to SSL_CTX_set_tls13_variant(tls13_experiment2).
(Configuring any TLS 1.3 variants on the server enables all variants,
so this is a no-op. We're just retiring some old experiments.)
Change-Id: I60f0ca3f96ff84bdf59e1a282a46e51d99047462
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QUIC will need to derive keys at this point. This also smooths over a
part of the server 0-RTT abstraction. Like with False Start, the SSL
object is largely in a functional state at this point.
Bug: 221
Change-Id: I4207d8cb1273a1156e728a7bff3943cc2c69e288
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Change-Id: Ic79f189c0bb2abf5d87f59ee410cafb4fb116ab8
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It's misnamed but, more importantly, doesn't do anything because the
test client isn't sending early data to begin with. We really need to
make these tests less error-prone to write. With this fix, the test
actually notices if we remove the server-side 0-RTT check.
Also remove MaxEarlyDataSize from the other server tests which
erroneously set it. Any test with sets that was likely copy-and-pasted
incorrectly.
Change-Id: Idc24bc1590e0316946022341185285418ab8c77b
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We can probably do this globally at this point since the cipher
requirements are much more restrict than they were in the beginning.
(Firefox, in particular, has done so far a while.) For now add a flag
since some consumer wanted this.
I'll see about connecting it to a Chrome field trial after our breakage
budget is no longer reserved for TLS 1.3.
Change-Id: Ib61dd5aae2dfd48b56e79873a7f3061a7631a5f8
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Change-Id: I87edf7e1fee07da4bc93cc7ab524b79991a4206e
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Change-Id: Ic99a949258e62cad168c2c39507ca63100a8ffe5
Reviewed-on: https://boringssl-review.googlesource.com/23264
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This throws me off every time.
Change-Id: I19848927fe821f7656dea0343361d70dae4007c9
Reviewed-on: https://boringssl-review.googlesource.com/23445
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After much procrastinating, we finally moved Chromium to the new stuff.
We can now delete this. This is a breaking change for
SSL_PRIVATE_KEY_METHOD consumers, but it should be trivial (remove some
unused fields in the struct). I've bumped BORINGSSL_API_VERSION to ease
any multi-sided changes that may be needed.
Change-Id: I9fe562590ad938bcb4fcf9af0fadeff1d48745fb
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Change-Id: I82f92019dccfaf927f7180a5af53c9ffae111861
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We were only running a random subset of TLS 1.3 tests with variants and
let a lot of bugs through as a result.
- HelloRetryRequest-EmptyCookie wasn't actually testing what we were
trying to test.
- The second HelloRetryRequest detection needs tweaks in draft-22.
- The empty HelloRetryRequest logic can't be based on non-empty
extensions in draft-22.
- We weren't sending ChangeCipherSpec correctly in HRR or testing it
right.
- Rework how runner reads ChangeCipherSpec by setting a flag which
affects the next readRecord. This cuts down a lot of cases and works
correctly if the client didn't send early data. (In that case, we
don't flush CCS until EndOfEarlyData and runner deadlocks waiting for
the ChangeCipherSpec to arrive.)
Change-Id: I559c96ea3a8b350067e391941231713c6edb2f78
Reviewed-on: https://boringssl-review.googlesource.com/23125
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Change-Id: I9da9734625d1d9d2c783830d8b4aecd34f51acc6
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The current PR says the sender only skips it during the handshake. Add a
test that we got this right.
Change-Id: Ib27eb942f11d955b8a24e32321efe474037f5254
Reviewed-on: https://boringssl-review.googlesource.com/23024
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See https://github.com/tlswg/tls13-spec/pull/1083. We misread the
original text spec, but it turns out the original spec text required
senders have version-specific maximum send fragments. The PR fixes this
off-by-one issue. Align with the new spec text uniformly.
This is a wire format change for our existing drafts *only if* records
have padding. We don't currently send padding, so this is fine. Unpadded
records continue to be capped at 2^14 bytes of plaintext (or 2^14+1
bytes of TLSInnerPlaintext structure).
Change-Id: I01017cfd13162504bb163dd59afd74aff0896cc4
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Change-Id: I1a0f264cbfa0eb5d4adac96d0fc24fa342f2b6a3
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This introduces a wire change to Experiment2/Experiment3 over 0RTT, however
as there is never going to be a 0RTT deployment with Experiment2/Experiment3,
this is valid.
Change-Id: Id541d195cbc4bbb3df7680ae2a02b53bb8ae3eab
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Change-Id: I46686aea9b68105cfe70a11db0e88052781e179c
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RC4 is dead and gone. This trims away the suiteNoDTLS flag.
Change-Id: I1ddc5d0811ad8cfb073e6e3c73100240bc649615
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RC4 is gone. The only remaining exception was the dumb SSL_eNULL cipher,
which works fine in DTLS. It doesn't seem worth the trouble to retain
this special-case.
Change-Id: I31023b71192808e4d21e82109255dc4d6d381df8
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This reverts commit 75d43b5785. Chatting
with EKR, there is some reason to believe that doing this might cause
more middlebox issues. Since we're still in the middle of working
towards viable deployment in the first place, revert this.
We can experiment with this later. I should have arranged for this to be
controlled more carefully anyway.
Change-Id: I0c8bf578f9d7364e913894e1bf3c2b8123dfd770
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This doesn't matter in so far as runner is not a real TLS
implementation, but it should enforce what there is to enforce just to
keep BoringSSL honest.
Bug: 80
Change-Id: I68940c33712d34a2437dc4dee31342e7f0f57c23
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This does not affect TLS 1.2 (beyond Channel ID or NPN) but, in TLS 1.3,
we send several encrypted handshake messages in a row. For the server,
this means 66 wasted bytes in TLS 1.3. Since OpenSSL has otherwise used
one record per message since the beginning and unencrypted overhead is
less interesting, leave that behavior as-is for the time being. (This
isn't the most pressing use of the breakage budget.) But TLS 1.3 is new,
so get this tight from the start.
Change-Id: I64dbd590a62469d296e1f10673c14bcd0c62919a
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We enforce that servers don't send bogus ALPN values, so consumers may
assume that SSL_get0_alpn_selected won't have anything terribly weird.
To maintain that invariant in the face of folks whose ALPN preferences
change (consider a persisted session cache), we should decline to offer
0-RTT if early_alpn would have been rejected by the check anyway.
Change-Id: Ic3a9ba4041d5d4618742eb05e27033525d96ade1
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Now that we've gotten everything, test this by just making bssl_shim run
all errors twice. The manual tests added to ssl_test.cc may now be
removed.
Bug: 206
Change-Id: Iefa0eae83ba59b476e6b6c6f0f921d5d1b72cbfb
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While a fairly small hook, open_close_notify is pretty weird. It
processes things at the record level and not above. Notably, this will
break if it skips past a TLS 1.3 KeyUpdate.
Instead, it can share the core part of SSL_read/SSL_peek, with slight
tweaks to post-handshake processing. Note this does require some tweaks
to that code. Notably, to retain the current semantics that SSL_shutdown
does not call funny callbacks, we suppress tickets.
Change-Id: Ia0cbd0b9f4527f1b091dd2083a5d8c7efb2bac65
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This removes the last place where non-app-data hooks leave anything
uncomsumed in rrec. (There is still a place where non-app-data hooks see
a non-empty rrec an entrance. read_app_data calls into read_handshake.
That'll be fixed in a later patch in this series.)
This should not change behavior, though some error codes may change due
to some processing happening in a slightly different order.
Since we do this in a few places, this adds a BUF_MEM_append with tests.
Change-Id: I9fe1fc0103e47f90e3c9f4acfe638927aecdeff6
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RSABadValueTooLong should have the true one as a suffix, not a prefix,
so that the version check still works. Also do the padding manually to
catch a few other bad padding cases. This is sufficient coverage so that
disabling any one comparison in the padding check flags some failure.
Change-Id: Ibcad284e5ecee3e995f43101c09e4cf7694391e9
Reviewed-on: https://boringssl-review.googlesource.com/21904
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Application records may be packed with other application data records or
with handshake records. We also were never testing CCS and handshake
being packed together. Implement this by moving the packing logic to the
bottom of BoGo's DTLS record layer.
Change-Id: Iabc14ec4ce7b99ed1f923ce9164077efe948c7a0
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Thanks to Dimitar Vlahovski for pointing this out.
Change-Id: I417f52ec6c3e950bdab6079962b29976fb75c029
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The Java client implementation of the 3SHAKE mitigation incorrectly
rejects initial handshakes when all of the following are true:
1. The ClientHello offered a session.
2. The session was successfully resumed previously.
3. The server declines the session.
4. The server sends a certificate with a different SAN list than in the
previous session.
(Note the 3SHAKE mitigation is to reject certificates changes on
renegotiation, while Java's logic applies to initial handshakes as
well.)
The end result is long-lived Java clients break on some certificate
rotations. Fingerprint Java clients and decline all offered sessions.
This avoids (2) while still introducing new sessions to clear any
existing problematic sessions.
See also b/65323005.
Change-Id: Ib2b84c69b5ecba285ffb8c4d03de5626838d794e
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Bug: 124
Change-Id: Iff02be9df2806572e6d3f860b448f598f85778c3
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Found with libFuzzer.
Bug: chromium:763097
Change-Id: I806bcfc714c0629ff7f725e37f4c0045d4ec7ac6
Reviewed-on: https://boringssl-review.googlesource.com/20105
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We forgot to reset that value.
Change-Id: Ic869cb61da332983cc40223cbbdf23b455dd9766
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Change-Id: I4dea223825da4e4ab0bc789e738f470f5fe5d659
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For historical reasons, TLS allows ServerHellos (and ClientHellos)
without extensions to omit the extensions fields entirely.
https://github.com/openssl/openssl/pull/4296 reports this is even
necessary for compatibility with extension-less clients. We continue to
do so, but add a test for it anyway.
Change-Id: I63c2e3a5f298674eb21952fca6914dad07d7c245
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The fuzzer should discover this instantly, but it's a sufficiently
important failure case (don't accidentally drop the certificate on the
floor or anything weird like that) that it's probably worth testing.
Change-Id: I684932c2e8a88fcf9b2318bf46980d312c66f6ef
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We have fancy -on-initial and -on-resume prefixes now that can apply to
every flag.
Change-Id: I6195a97f663ebc94db320ca35889c213c700a976
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We currently forbid the server certificate from changing on
renegotiation. This means re-verifying the certificate is pointless and
indeed the callback being called again seems to surprise consumers more
than anything else.
Carry over the initial handshake's SCT lists and OCSP responses (don't
enforce they don't change since the server may have, say, picked up new
OCSP responses in the meantime), ignore new ones received on
renegotiation, and don't bother redoing verification.
For our purposes, TLS 1.2 renegotiation is an overcomplicated TLS 1.3
KeyUpdate + post-handshake auth. The server is not allowed to change
identity.
Bug: 126
Change-Id: I0dae85bcf243943b1a5a97fa4f30f100c9e6e41e
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I messed up https://boringssl-review.googlesource.com/8883 and caused
both sides to believe they had sent the final Finished. Use next_message
to detect whether our last flight had a reply.
Change-Id: Ia4d8c8eefa818c9a69acc94d63c9c863293c3cf5
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This loosens the earlier restriction to match Channel ID. Both may be
configured and offered, but the server is obligated to select only one
of them. This aligns with the current tokbind + 0-RTT draft where the
combination is signaled by a separate extension.
Bug: 183
Change-Id: I786102a679999705d399f0091f76da236be091c2
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Commit-Queue: Steven Valdez <svaldez@google.com>
CertificateVerify must be sent after a non-empty Certificate msg for:
1) TLS1.2 client
2) TLS1.3 client and server
This CL adds tests for those use cases.
Change-Id: I696e9dd74dcd523c6f8868a4fb9ada28fd67746d
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This is analogous to needing to test that Finished is enforced in False
Start.
Change-Id: I168a72ac51b0f75156aaf6ccc9724ae66ce1e734
Reviewed-on: https://boringssl-review.googlesource.com/18986
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These should use the shim/runner combined setting.
Change-Id: Iad6abb4e76f6e5accef446696aa4132073eca06a
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reuse_message and V2ClientHellos each caused messages to be
double-reported.
Change-Id: I8722a3761ede272408ac9cf8e1b2ce383911cc6f
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This would only come up if the peer didn't pack records together, but
it's free to handle. Notably OpenSSL has a bug where it does not pack
retransmits together.
Change-Id: I0927d768f6b50c62bacdd82bd1c95396ed503cf3
Reviewed-on: https://boringssl-review.googlesource.com/18724
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I'm not that fast when debugging.
Change-Id: I37a120a77e9a35ac5255ad760513b983f83d9bd7
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This also serves as a certificate verification callback for
CRYPTO_BUFFER-based consumers. Remove the silly
SSL_CTX_i_promise_to_verify_certs_after_the_handshake placeholder.
Bug: 54, chromium:347402
Change-Id: I4c6b445cb9cd7204218acb2e5d1625e6f37aff6f
Reviewed-on: https://boringssl-review.googlesource.com/17964
Reviewed-by: David Benjamin <davidben@google.com>
Due to SSL 3.0 legacy, TLS 1.0 through 1.2 allow ClientHello and
ServerHello messages to omit the extensions field altogether, rather
than write an empty field. We broke this in
https://boringssl-review.googlesource.com/c/17704/ when we needed to a
second ServerHello parsing path.
Fix this and add some regression tests to explicitly test both the
omitted and empty extensions ClientHello and ServerHello cases.
Bug: chromium:743218
Change-Id: I8297ba608570238e19f12ea44a9fe2fe9d881d28
Reviewed-on: https://boringssl-review.googlesource.com/17904
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This is in an attempt to debug the Mac flakiness. The timestamps will
hopefully help narrow down the order of operations here.
Bug: 199
Change-Id: I8b8dd7222e3a57a8b055b8bc1b7731334e0fcdf0
Reviewed-on: https://boringssl-review.googlesource.com/17886
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This implements PR #1051
(https://github.com/tlswg/tls13-spec/pull/1051).
Local experiments were not able to replicate the claims in the PR, but
implement this anyway for comparison purposes.
Change-Id: Ic9baf5e671f9a44565020466a553dd08f5ec0f1b
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Adding it to tlsVersions is sort of pointless when we don't test it.
Change-Id: Ie0c0167cef887aee54e5be90bf7fc98619c1a6fb
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TLS 1.3 deployment is currently blocked by buggy middleboxes
throughout the ecosystem. As an experiment to better understand these bugs
and the problems they are causing, implement TLS 1.3 variants with
alternate encodings. These are still the same protocol, only encoded
slightly differently. We will use what we learn from these experiments to
guide the TLS 1.3 deployment strategy and proposals to the IETF, if any.
These experiments only target the basic 1-RTT TLS 1.3 handshake. Based on
what we learn from this experiment, we may try future variations to
explore 0-RTT and HelloRetryRequest.
When enabled, the server supports all TLS 1.3 variants while the client
is configured to use a particular variant.
Change-Id: I532411d1abc41314dc76acce0246879b754b4c61
Reviewed-on: https://boringssl-review.googlesource.com/17327
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Not sure why it was expanded out like that.
Change-Id: I6899dbd23130ed7196c45c2784330b2a4fe9bdba
Reviewed-on: https://boringssl-review.googlesource.com/17666
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Like other handshake properties, when in 0-RTT on the client,
SSL_version should report the predicted version. This used to work on
accident because of how ssl->version got set in handshake_client.c early
(and that TLS 1.4 does not exist), but we no longer do that.
Change-Id: Ifb63a22b795fe8964ac553844a46040acd5d7323
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We were missing AES256 and 3DES. Though this test dates to the old
record-splitting code which was much scarier than the new one.
Change-Id: Ia84a8c1a2bbd79fa70941f80cf6393013e4f13d5
Reviewed-on: https://boringssl-review.googlesource.com/17543
Reviewed-by: David Benjamin <davidben@google.com>
This was a workaround for triple handshake put in way back, before
extended master secret.
Change-Id: Ie0112fa6323522b17c90a833d558f7182586d2c3
Reviewed-on: https://boringssl-review.googlesource.com/17541
Reviewed-by: David Benjamin <davidben@google.com>
Also mirror the structure of the TLS 1.2 and TLS 1.3 code a bit.
Change-Id: I7b34bf30de63fa0bd47a39a90570846fb2314ad5
Reviewed-on: https://boringssl-review.googlesource.com/17539
Reviewed-by: David Benjamin <davidben@google.com>
We've never actually written tests for equipreference groups at the
BoringSSL level.
Change-Id: I571c081534efbfa8e7b84846fafed0b772721da1
Reviewed-on: https://boringssl-review.googlesource.com/17538
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Change-Id: I90286da596d5822d4cfedf40995d80cf76adaf97
Reviewed-on: https://boringssl-review.googlesource.com/17536
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Commit-Queue: David Benjamin <davidben@google.com>
Otherwise the fuzzer gets stuck at renegotiations.
Bug: 104
Change-Id: If37f9ab165d06e37bfc5c423fba35edaabed293b
Reviewed-on: https://boringssl-review.googlesource.com/17532
Reviewed-by: David Benjamin <davidben@google.com>
This allows us to fill in holes in our fuzzer coverage, notably client
resumption (and thus early data) and server client certificates. The
corpora are not refreshed yet. This will be done in upcoming changes.
Also add an option for debugging fuzzers. It's very useful to test it on
transcripts and make sure that fuzzer mode successfully makes things
compatible.
Bug: 104
Change-Id: I02f0be4045d1baf68efc9a4157f573df1429575d
Reviewed-on: https://boringssl-review.googlesource.com/17531
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This is in preparation for supporting multiple TLS 1.3 variants.
Change-Id: Ia2caf984f576f1b9e5915bdaf6ff952c8be10417
Reviewed-on: https://boringssl-review.googlesource.com/17526
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SSL_set_max_proto_version(TLS1_3_DRAFT_VERSION) worked unintentionally.
Fix that. Also add an error when it fails.
Change-Id: I1048fede7b163e1c170e17bf4370b468221a7077
Reviewed-on: https://boringssl-review.googlesource.com/17525
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WatchGuard's bug is very distinctive. Report a dedicated error code out
of BoringSSL so we can better track this.
Bug: chromium:733223
Change-Id: Ia42abd8654e7987b1d43c63a4f454f35f6aa873b
Reviewed-on: https://boringssl-review.googlesource.com/17328
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BUG=76
Change-Id: If58a73da38e46549fd55f84a9104e2dfebfda43f
Reviewed-on: https://boringssl-review.googlesource.com/14164
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This doesn't hugely matter, but I noticed it was some missing coverage.
Change-Id: I3e425d47fbbeaacd9da2ae883f34e89b4562ec11
Reviewed-on: https://boringssl-review.googlesource.com/17184
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Change-Id: I1a17860245b7726a24576f5e1bddb0645171f28e
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https://build.chromium.org/p/client.boringssl/builders/linux_fips_rel/builds/115
appears to have failed because we were hanging on Accept() forever.
Impose a timeout on that and waiting for the process to return so we at
least can see what stdout/stderr was received so far.
Change-Id: Ief7f7759d02a3fbfc504d2f214b742672b0fe9e6
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The C side no longer supports DHE, so there is no longer a need for the
Go side to anymore.
Change-Id: I5084177becd369779a4008a41f4838cb31adcfde
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This doesn't actually measure what we need(*) and, because of that, it's
way more noisy than expected.
(*) We want to know whether the pool has been initialised, not whether
it currently thinks it has a lot of bits, but we can't get what we want
without getrandom() support in the kernel.
Change-Id: I20accb99a592739c786a25c1656aeea050ae81a3
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