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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SSL_set_max_proto_version(TLS1_3_DRAFT_VERSION) worked unintentionally.
Fix that. Also add an error when it fails.
Change-Id: I1048fede7b163e1c170e17bf4370b468221a7077
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BUG=76
Change-Id: If58a73da38e46549fd55f84a9104e2dfebfda43f
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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
Reviewed-on: https://boringssl-review.googlesource.com/15664
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Also remove TODO about post-handshake authentication. The only sensible
way to handle unexpected post-handshake authentication is a fatal error
(dropping them would cause a deadlock), and we treat all post-handshake
authentication as unexpected.
BUG=74
Change-Id: Ic92035b26ddcbcf25241262ce84bcc57b736b7a7
Reviewed-on: https://boringssl-review.googlesource.com/14744
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There was a case we were not covering.
Change-Id: Ia8bc1b73f5db3d18afc3cdcfa249867784c3dcd2
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This only works at TLS 1.2 and above as, before TLS 1.2, there is no way
to advertise support for Ed25519 or negotiate the correct signature
algorithm. Add tests for this accordingly.
For now, this is disabled by default on the verifying side but may be
enabled per SSL_CTX. Notably, projects like Chromium which use an
external verifier may need changes elsewhere before they can enable it.
(On the signing side, we can assume that if the caller gave us an
Ed25519 certificate, they mean for us to use it.)
BUG=187
Change-Id: Id25b0a677dcbe205ddd26d8dbba11c04bb520756
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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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BUG=76
Change-Id: Ie894ea5d327f88e66b234767de437dbe5c67c41d
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BUG=76
Change-Id: I43672ee82a50f8fe706a5d607ef774a6e96db252
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Once 0-RTT data is added to the current 0-RTT logic, the server will
trigger a write when processing incoming data via SSL_read. This means
SSL_read will block on transport write, which is something we've not
tried to avoid far (assuming no renegotiation).
The specification allows for tickets to be sent at half-RTT by
predicting the client Finished. By doing this we both get the tickets on
the wire sooner and avoid confusing I/O patterns. Moreover, we
anticipate we will need this mode for one of the QUIC stateless reject
patterns.
This is tested by always processing NewSessionTickets in the
ExpectHalfRTTData path on 0-RTT connections. As not other
implementations using BoGo may not do this, this is configurable via the
shim config.
BUG=76
Change-Id: Ia0f56ae63f15078ff1cacceba972d2b99001947f
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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
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We'll measure this value to guide what tolerance to use in the 0-RTT
anti-replay mechanism. This also fixes a bug where we were previously
minting ticket_age_add-less tickets on the server. Add a check to reject
all those tickets.
BUG=113
Change-Id: I68e690c0794234234e0d0500b4b9a7f79aea641e
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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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In honor of CVE-2016-9244. Although that particular bug BoGo was already
testing since it uses 16 bytes here.
The empty session ID case is particularly worth testing to make sure we
don't get confused somewhere. RFC 5077 allows clients to offer tickets
with no session ID. This is absurd since the client then has no way of
detecting resumption except by lookahead. We'll never do this as a
client, but should handle it correctly as a server.
Change-Id: I49695d19f03c4efdef43749c07372d590a010cda
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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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Change-Id: I38cd04fa40edde4e4dd31fdc16bbf92985430198
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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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This gives coverage over needing to fragment something over multiple
records.
Change-Id: I2373613608ef669358d48f4e12f68577fa5a40dc
Reviewed-on: https://boringssl-review.googlesource.com/13101
Reviewed-by: Adam Langley <agl@google.com>
08b65f4e31 introduced a memory leak and
also got enums confused. Also fix a codepath that was missing an error
code.
Thanks to OSS-Fuzz which appears to have found it in a matter of hours.
Change-Id: Ia9e926c28a01daab3e6154d363d0acda91209a22
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This adds support for setting 0-RTT mode on tickets minted by
BoringSSL, allowing for testing of the initial handshake knowledge.
BUG=76
Change-Id: Ic199842c03b5401ef122a537fdb7ed9e9a5c635a
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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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Change-Id: Ie947ab176d10feb709c6e135d5241c6cf605b8e8
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Although we ignore all but the first identity, keep clients honest by
parsing the whole thing. Also explicitly check that the binder and
identity counts match.
Change-Id: Ib9c4caae18398360f3b80f8db1b22d4549bd5746
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BUG=101
Change-Id: Ia1edbccee535b0bc3a0e18465286d5bcca240035
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The draft 18 implementation did not compute scts_requested correctly. As
a result, it always believed SCTs were requested. Fix this and add tests
for unsolicited OCSP responses and SCTs at all versions.
Thanks to Daniel Hirche for the report.
Change-Id: Ifc59c5c4d7edba5703fa485c6c7a4055b15954b4
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Having that logic in two different places is a nuisance when we go to
add new checks like resumption stuff. Along the way, this adds missing
tests for the ClientHello cipher/session consistency check. (We'll
eventually get it for free once the cipher/resumption change is
unblocked, but get this working in the meantime.)
This also fixes a bug where the session validity checks happened in the
wrong order relative to whether tickets_supported or renew_ticket was
looked at. Fix that by lifting that logic closer to the handshake.
Change-Id: I3f4b59cfe01064f9125277dc5834e62a36e64aae
Reviewed-on: https://boringssl-review.googlesource.com/12230
Reviewed-by: Adam Langley <agl@google.com>
We used to enforce after the version was set, but stopped enforcing with
TLS 1.3. NSS enforces the value for encrypted records, which makes sense
and avoids the problems gating it on have_version. Add tests for this.
Change-Id: I7fb5f94ab4a22e8e3b1c14205aa934952d671727
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The existing tests for this codepath require us to reconfigure the shim.
This will not work when TLS 1.3 cipher configuration is detached from
the old cipher language. It also doesn't hit codepaths like sessions
containing a TLS 1.3 version but TLS 1.2 cipher.
Instead, add some logic to the runner to rewrite tickets and build tests
out of that.
Change-Id: I57ac5d49c3069497ed9aaf430afc65c631014bf6
Reviewed-on: https://boringssl-review.googlesource.com/12024
Reviewed-by: Adam Langley <agl@google.com>
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.
Change-Id: Id9d769b890b3308ea70b705e7241c73cb1930ede
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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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Change-Id: Ifcdbeab9291d1141605a09a1960702c792cffa86
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Change-Id: I5d4fc0d3204744e93d71a36923469035c19a5b10
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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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BUG=77
Change-Id: If568412655aae240b072c29d763a5b17bb5ca3f7
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BUG=77
Change-Id: Id8c45e98c4c22cdd437cbba1e9375239e123b261
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