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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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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Change-Id: I4dea223825da4e4ab0bc789e738f470f5fe5d659
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Commit-Queue: Martin Kreichgauer <martinkr@google.com>
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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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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 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
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 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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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
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Change-Id: I90286da596d5822d4cfedf40995d80cf76adaf97
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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 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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BUG=76
Change-Id: If58a73da38e46549fd55f84a9104e2dfebfda43f
Reviewed-on: https://boringssl-review.googlesource.com/14164
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These will be used to test the C implementation.
BUG=187
Change-Id: If397eaa51885c8140a63c5f731ce58a8ad6949aa
Reviewed-on: https://boringssl-review.googlesource.com/14452
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We've never allowed this as no good can come of it. Add a test for this.
Change-Id: I4b92372f58c1fe2054e33007adbe496d153a9251
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This adds support on the server and client to accept data-less early
data. The server will still fail to parse early data with any
contents, so this should remain disabled.
BUG=76
Change-Id: Id85d192d8e0360b8de4b6971511b5e8a0e8012f7
Reviewed-on: https://boringssl-review.googlesource.com/12921
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Based on elements of the Bugs structure, runner will tweak a ClientHello
message after parsing. However, unless the same tweaks are made to a
second ClientHello in a TLS 1.3 connection, it might appear that they
don't match.
Change-Id: I4467c8ece12dc75c7c7b0fad9e622e6783c55f21
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Due to middlebox and ecosystem intolerance, short record headers are going to
be unsustainable to deploy.
BUG=119
Change-Id: I20fee79dd85bff229eafc6aeb72e4f33cac96d82
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This allows us to move the code from Chrome into BoringSSL itself.
BUG=126
Change-Id: I04b4f63008a6de0a58dd6c685c78e9edd06deda6
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The SNI extension may be ACKed by the server. This is kind of pointless,
but make sure we cover these codepaths.
Change-Id: I14b25ab865dd6e35a30f11ebc9027a1518bbeed9
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Change-Id: I878dfb9f5d3736c3ec0d5fa39052cca58932dbb7
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In TLS 1.2, resumption's benefits are more-or-less subsumed by False
Start. TLS 1.2 resumption lifetime is bounded by how much traffic we are
willing to encrypt without fresh key material, so the lifetime is short.
Renewal uses the same key, so we do not allow it to increase lifetimes.
In TLS 1.3, resumption unlocks 0-RTT. We do not implement psk_ke, so
resumption incorporates fresh key material into both encrypted traffic
(except for early data) and renewed tickets. Thus we are both more
willing to and more interested in longer lifetimes for tickets. Renewal
is also not useless. Thus in TLS 1.3, lifetime is bound separately by
the lifetime of a given secret as a psk_dhe_ke authenticator and the
lifetime of the online signature which authenticated the initial
handshake.
This change maintains two lifetimes on an SSL_SESSION: timeout which is
the renewable lifetime of this ticket, and auth_timeout which is the
non-renewable cliff. It also separates the TLS 1.2 and TLS 1.3 timeouts.
The old session timeout defaults and configuration apply to TLS 1.3, and
we define new ones for TLS 1.3.
Finally, this makes us honor the NewSessionTicket timeout in TLS 1.3.
It's no longer a "hint" in 1.3 and there's probably value in avoiding
known-useless 0-RTT offers.
BUG=120
Change-Id: Iac46d56e5a6a377d8b88b8fa31f492d534cb1b85
Reviewed-on: https://boringssl-review.googlesource.com/13503
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Change-Id: I44202457841f06a899e140f78ae8afa7ac720283
Reviewed-on: https://boringssl-review.googlesource.com/12600
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Change-Id: Idc93fdca2f1c5c23e4ba48c4efed2edbad1e857b
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As long as we still have this code, we should make sure it doesn't
regress.
Change-Id: I0290792aedcf667ec49b251d747ffbc141c0cec4
Reviewed-on: https://boringssl-review.googlesource.com/13053
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Upstream accidentally started rejecting server-sent point formats in
https://github.com/openssl/openssl/issues/2133. Our own test coverage
here is also lacking, so flesh it out.
Change-Id: I99059558bd28d3a540c9687649d6db7e16579d29
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This extension will be used to test whether
https://github.com/tlswg/tls13-spec/pull/762 is deployable against
middleboxes. For simplicity, it is mutually exclusive with 0-RTT. If
client and server agree on the extension, TLS 1.3 records will use the
format in the PR rather than what is in draft 18.
BUG=119
Change-Id: I1372ddf7b328ddf73d496df54ac03a95ede961e1
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finishedHash should keep a running secret and incorporate entropy as is
available.
Change-Id: I2d245897e7520b2317bc0051fa4d821c32eeaa10
Reviewed-on: https://boringssl-review.googlesource.com/12586
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Draft 18 sadly loosens the requirements to only requiring the PRF hash
stay fixed.
BUG=117
Change-Id: Ic94d53fd9cabaee611fcf36b0071558075e10728
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This is generally much cleaner and makes it possible to implement the
more lax cipher matching in draft 18.
BUG=117
Change-Id: I595d7619d60bc92e598d75b43945286323c0b72b
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It doesn't particular matter, but AcceptAnySession should only skip the
things that would cause us to note accept a ticket. ExpectTicketAge is
an assertion, not part of protocol logic. Accordingly, fix the text.
Change-Id: I3bea9c58f4d5f912308252ec8834f183287d632f
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The version check should run if AcceptAnyVersion is *not* set.
Change-Id: I4c137564f91a86cb5e6a26e09fd4670cce8f1dcb
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Thanks to Eric Rescorla for catching this.
Change-Id: Id0a024d7f705519cfe76d350e0ef2688dbd11a22
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This was removed a while ago. As of -18, the early data indication
extension is just a boolean.
Change-Id: I328b9abfafad326d4c2a3b5fe981af111f8401ad
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3c6a1ea674 switched what layer handled
the DTLS version mapping but forgot to correct the HelloVerifyRequest
logic to account for this.
Thanks to Jed Davis for noticing this.
Change-Id: I94ea18fc43a7ba15dd7250bfbcf44dbb3361b3ce
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BUG=103
Change-Id: I9a49fbaf66af73978ce264d27926f483e1e44766
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Channel ID for TLS 1.3 uses the same digest construction as
CertificateVerify. This message is signed with the Channel ID key and
put in the same handshake message (with the same format) as in TLS 1.2.
BUG=103
Change-Id: Ia5b2dffe5a39c39db0cecb0aa6bdc328e53accc2
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This should land in the same group of revisions as the two parent
commits.
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We'll never send cookies, but we'll echo them on request. Implement it
in runner as well and test.
BUG=98
Change-Id: Idd3799f1eaccd52ac42f5e2e5ae07c209318c270
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This doesn't currently honor the required KeyUpdate response. That will
be done in a follow-up.
BUG=74
Change-Id: I750fc41278736cb24230303815e839c6f6967b6a
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These too must be rejected. Test both unknown extensions and extensions
in the wrong context.
Change-Id: I54d5a5060f9efc26e5e4d23a0bde3c0d4d302d09
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This is part of TLS 1.3 draft 16 but isn't much of a wire format change,
so go ahead and add it now. When rolling into Chromium, we'll want to
add an entry to the error mapping.
Change-Id: I8fd7f461dca83b725a31ae19ef96c890d603ce53
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The server acknowledging a non-existent session is a particularly
interesting case since getting it wrong means a NULL crash.
Change-Id: Iabde4955de883595239cfd8e9d84a7711e60a886
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