We were sending decode_error, but the spec explicitly says (RFC 5246):
unsupported_extension
sent by clients that receive an extended server hello containing
an extension that they did not put in the corresponding client
hello. This message is always fatal.
Also add a test for this when it's a known but unoffered extension. We
actually end up putting these in different codepaths now due to the
custom extensions stuff.
Thanks to Eric Rescorla for pointing this out.
Change-Id: If6c8033d4cfe69ef8af5678b873b25e0dbadfc4f
Reviewed-on: https://boringssl-review.googlesource.com/9061
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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BUG=74
Change-Id: I72d52c1fbc3413e940dddbc0b20c7f22459da693
Reviewed-on: https://boringssl-review.googlesource.com/8981
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This is in preparation for switching finish_handshake to a
release_current_message hook. finish_handshake in DTLS is also
responsible for releasing any memory associated with extra messages in
the handshake.
Except that's not right and we need to make it an error anyway. Given
that the rest of the DTLS dispatch layer already strongly assumes there
is only one message in epoch one, putting the check in the fragment
processing works fine enough. Add tests for this.
This will certainly need revising when DTLS 1.3 happens (perhaps just a
version check, perhaps bringing finish_handshake back as a function that
can fail... which means we need a state just before SSL_ST_OK), but DTLS
1.3 post-handshake messages haven't really been written down, so let's
do the easy thing for now and add a test for when it gets more
interesting.
This removes the sequence number reset in the DTLS code. That reset
never did anything becase we don't and never will renego. We should make
sure DTLS 1.3 does not bring the reset back for post-handshake stuff.
(It was wrong in 1.2 too. Penultimate-flight retransmits and renego
requests are ambiguous in DTLS.)
BUG=83
Change-Id: I33d645a8550f73e74606030b9815fdac0c9fb682
Reviewed-on: https://boringssl-review.googlesource.com/8988
Reviewed-by: Adam Langley <agl@google.com>
Implemented in preparation for testing the C implementation. Tested
against itself.
BUG=74
Change-Id: Iec1b9ad22e09711fa4e67c97cc3eb257585c3ae5
Reviewed-on: https://boringssl-review.googlesource.com/8873
Reviewed-by: Nick Harper <nharper@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Also parse out the ticket lifetime which was previously ignored.
BUG=75
Change-Id: I6ba92017bd4f1b31da55fd85d2af529fd592de11
Reviewed-on: https://boringssl-review.googlesource.com/8871
Reviewed-by: Nick Harper <nharper@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Ridiculous as it is, the protocol does not forbid packing HelloRequest
and Finished into the same record. Add a test for this case.
Change-Id: I8e1455b261f56169309070bf44d14d40a63eae50
Reviewed-on: https://boringssl-review.googlesource.com/8901
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
[Tests added by davidben.]
Change-Id: I0d54a4f8b8fe91b348ff22658d95340cdb48b089
Reviewed-on: https://boringssl-review.googlesource.com/8850
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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Change-Id: I92425d7c72111623ddfbe8391f2d2fa88f101ef3
Reviewed-on: https://boringssl-review.googlesource.com/8818
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Change-Id: Ibde837040d2332bc8570589ba5be9b32e774bfcf
Reviewed-on: https://boringssl-review.googlesource.com/8811
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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There is no longer need for the Go code to implement 'fake TLS 1.3'. We
now implement real incomplete TLS 1.3.
Change-Id: I8577100ef8c7c83ca540f37dadd451263f9f37e6
Reviewed-on: https://boringssl-review.googlesource.com/8823
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This adds the machinery for doing TLS 1.3 1RTT.
Change-Id: I736921ffe9dc6f6e64a08a836df6bb166d20f504
Reviewed-on: https://boringssl-review.googlesource.com/8720
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Not only test that we can enforce the message type correctly (this is
currently in protocol-specific code though really should not be), but
also test that each individual message is checked correctly.
Change-Id: I5ed0f4033f011186f020ea46940160c7639f688b
Reviewed-on: https://boringssl-review.googlesource.com/8793
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This will be used for writing the equivalent test in TLS 1.3 to the
recent DTLS change and similar.
Change-Id: I280c3ca8f1d8e0981b6e7a499acb7eceebe43a0c
Reviewed-on: https://boringssl-review.googlesource.com/8792
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This is the equivalent of FragmentAcrossChangeCipherSuite for DTLS. It
is possible for us to, while receiving pre-CCS handshake messages, to
buffer up a message with sequence number meant for a post-CCS Finished.
When we then get to the new epoch and attempt to read the Finished, we
will process the buffered Finished although it was sent with the wrong
encryption.
Move ssl_set_{read,write}_state to SSL_PROTOCOL_METHOD hooks as this is
a property of the transport. Notably, read_state may fail. In DTLS
check the handshake buffer size. We could place this check in
read_change_cipher_spec, but TLS 1.3 has no ChangeCipherSpec message, so
we will need to implement this at the cipher change point anyway. (For
now, there is only an assert on the TLS side. This will be replaced with
a proper check in TLS 1.3.)
Change-Id: Ia52b0b81e7db53e9ed2d4f6d334a1cce13e93297
Reviewed-on: https://boringssl-review.googlesource.com/8790
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
TLS 1.3 will go through very different code than everything else. Even
SSL 3.0 is somewhat special-cased now. Move the invalid signature tests
there and run at all versions.
Change-Id: Idd0ee9aac2939c0c8fd9af2ea7b4a22942121c60
Reviewed-on: https://boringssl-review.googlesource.com/8775
Reviewed-by: David Benjamin <davidben@google.com>
For now, skip the 1.2 -> 1.1 signal since that will affect shipping
code. We may as well enable it too, but wait until things have settled
down. This implements the version in draft-14 since draft-13's isn't
backwards-compatible.
Change-Id: I46be43e6f4c5203eb4ae006d1c6a2fe7d7a949ec
Reviewed-on: https://boringssl-review.googlesource.com/8724
Reviewed-by: David Benjamin <davidben@google.com>
This way we can test failing client auth without having to worry about
first getting through server auth.
Change-Id: Iaf996d87ac3df702a17e76c26006ca9b2a5bdd1f
Reviewed-on: https://boringssl-review.googlesource.com/8721
Reviewed-by: David Benjamin <davidben@google.com>
(Of course, it's still signing ServerKeyExchange messages since the
handshake's the old one.)
Change-Id: I35844a329d983f61ed0b5be20b333487406fe7e4
Reviewed-on: https://boringssl-review.googlesource.com/8614
Reviewed-by: David Benjamin <davidben@google.com>
Implement in both C and Go. To test this, route config into all the
sign.go functions so we can expose bugs to skip the check.
Unfortunately, custom private keys are going to be a little weird since
we can't check their curve type. We may need to muse on what to do here.
Perhaps the key type bit should return an enum that includes the curve?
It's weird because, going forward, hopefully all new key types have
exactly one kind of signature so key type == sig alg == sig alg prefs.
Change-Id: I1f487ec143512ead931e3392e8be2a3172abe3d2
Reviewed-on: https://boringssl-review.googlesource.com/8701
Reviewed-by: David Benjamin <davidben@google.com>
{sha256,ecdsa} should not be silently accepted for an RSA key.
Change-Id: I0c0eea5071f7a59f2707ca0ea023a16cc4126d6a
Reviewed-on: https://boringssl-review.googlesource.com/8697
Reviewed-by: David Benjamin <davidben@google.com>
[Originally written by nharper, revised by davidben.]
When we add this in the real code, this will want ample tests and hooks
for bugs, but get the core logic in to start with.
Change-Id: I86cf0b6416c9077dbb6471a1802ae984b8fa6c72
Reviewed-on: https://boringssl-review.googlesource.com/8598
Reviewed-by: David Benjamin <davidben@google.com>
[Originally written by nharper and then revised by davidben.]
Most features are missing, but it works for a start. To avoid breaking
the fake TLS 1.3 tests while the C code is still not landed, all the
logic is gated on a global boolean. When the C code gets in, we'll
set it to true and remove this boolean.
Change-Id: I6b3a369890864c26203fc9cda37c8250024ce91b
Reviewed-on: https://boringssl-review.googlesource.com/8601
Reviewed-by: David Benjamin <davidben@google.com>
I'm surprised we'd never tested this. In addition to splitting handshake
records up, one may pack multiple handshakes into a single record, as
they fit. Generalize the DTLS handshake flush hook to do this in TLS as
well.
Change-Id: Ia546d18c7c56ba45e50f489c5b53e1fcd6404f51
Reviewed-on: https://boringssl-review.googlesource.com/8650
Reviewed-by: David Benjamin <davidben@google.com>
TLS 1.3 defines its own EncryptedExtensions message. The existing one is
for Channel ID which probably should not have tried to generalize
itself.
Change-Id: I4f48bece98510eb54e64fbf3df6c2a7332bc0261
Reviewed-on: https://boringssl-review.googlesource.com/8566
Reviewed-by: David Benjamin <davidben@google.com>
Right now I believe we are testing against DTLS 1.3 ClientHellos. Fix
this in preparation for making VersionTLS13 go elsewhere in the Go code.
Unfortunately, I made the mistake of mapping DTLS 1.0 to TLS 1.0 rather
than 1.1 in Go. This does mean the names of the tests naturally work out
correctly, but we have to deal with this awkward DTLS-1.1-shaped hole in
our logic.
Change-Id: I8715582ed90acc1f08197831cae6de8d5442d028
Reviewed-on: https://boringssl-review.googlesource.com/8562
Reviewed-by: David Benjamin <davidben@google.com>
In preparation for TLS 1.3 using its actual handshake, switch most tests
to TLS 1.3 and add liberal TODOs for the tests which will need TLS 1.3
variants.
In doing so, move a few tests from basic tests into one of the groups.
Also rename BadECDSACurve to BadECDHECurve (it was never ECDSA) and add
a test to make sure FALLBACK_SCSV is correctly sensitive to the maximum
version.
Change-Id: Ifca6cf8f7a48d6f069483c0aab192ae691b1dd8e
Reviewed-on: https://boringssl-review.googlesource.com/8560
Reviewed-by: David Benjamin <davidben@google.com>
TLS 1.3 defines a new SignatureScheme uint16 enum that is backwards
compatible on the wire with TLS1.2's SignatureAndHashAlgorithm. This
change updates the go testing code to use a single signatureAlgorithm
enum (instead of 2 separate signature and hash enums) in preparation for
TLS 1.3. It also unifies all the signing around this new scheme,
effectively backporting the change to TLS 1.2.
For now, it does not distinguish signature algorithms between 1.2 and
1.3 (RSA-PSS instead of RSA-PKCS1, ECDSA must match curve types). When
the C code is ready make a similar change, the Go code will be updated
to match.
[Originally written by nharper, tweaked significantly by davidben.]
Change-Id: If9a315c4670755089ac061e4ec254ef3457a00de
Reviewed-on: https://boringssl-review.googlesource.com/8450
Reviewed-by: David Benjamin <davidben@google.com>
This also adds a missing check to the C half to ensure fake record types are
always correct, to keep implementations honest.
Change-Id: I1d65272e647ffa67018c721d52c639f8ba47d647
Reviewed-on: https://boringssl-review.googlesource.com/8510
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
We were missing this case. It is possible to receive an early unencrypted
ChangeCipherSpec alert in DTLS because they aren't ordered relative to the
handshake. Test this case. (ChangeCipherSpec in DTLS is kind of pointless.)
Change-Id: I84268bc1821734f606fb20bfbeda91abf372f32c
Reviewed-on: https://boringssl-review.googlesource.com/8460
Reviewed-by: Adam Langley <agl@google.com>
This implements the cipher suite constraints in "fake TLS 1.3". It also makes
bssl_shim and runner enable it by default so we can start adding MaxVersion:
VersionTLS12 markers to tests as 1.2 vs. 1.3 differences begin to take effect.
Change-Id: If1caf6e43938c8d15b0a0f39f40963b8199dcef5
Reviewed-on: https://boringssl-review.googlesource.com/8340
Reviewed-by: David Benjamin <davidben@google.com>
This unifies a bunch of tests and also adds a few missing ones.
Change-Id: I91652bd010da6cdb62168ce0a3415737127e1577
Reviewed-on: https://boringssl-review.googlesource.com/8360
Reviewed-by: Nick Harper <nharper@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
By corrupting the X25519 and Newhope parts separately, the test shows
that both are in use. Possibly excessive?
Change-Id: Ieb10f46f8ba876faacdafe70c5561c50a5863153
Reviewed-on: https://boringssl-review.googlesource.com/8250
Reviewed-by: Adam Langley <agl@google.com>
This is easier to deploy, and more obvious. This commit reverts a few
pieces of e25775bc, but keeps most of it.
Change-Id: If8d657a4221c665349c06041bb12fffca1527a2c
Reviewed-on: https://boringssl-review.googlesource.com/8061
Reviewed-by: Adam Langley <agl@google.com>
CECPQ1 is a new key exchange that concatenates the results of an X25519
key agreement and a NEWHOPE key agreement.
Change-Id: Ib919bdc2e1f30f28bf80c4c18f6558017ea386bb
Reviewed-on: https://boringssl-review.googlesource.com/7962
Reviewed-by: David Benjamin <davidben@google.com>
The existing logic gets confused in a number of cases around close_notify vs.
fatal alert. SSL_shutdown, while still pushing to the error queue, will fail to
notice alerts. We also get confused if we try to send a fatal alert when we've
already sent something else.
Change-Id: I9b1d217fbf1ee8a9c59efbebba60165b7de9689e
Reviewed-on: https://boringssl-review.googlesource.com/7952
Reviewed-by: David Benjamin <davidben@google.com>
The specification, sadly, did not say that servers MUST NOT send it, only that
they are "not expected to" do anything with the client extension. Accordingly,
we decided to tolerate this. Add a test for this so that we check this
behavior.
This test also ensures that the original session's value for it carries over.
Change-Id: I38c738f218a09367c9d8d1b0c4d68ab5cbec730e
Reviewed-on: https://boringssl-review.googlesource.com/7860
Reviewed-by: Adam Langley <agl@google.com>
This is just kind of a silly thing to do. NSS doesn't allow them either. Fatal
alerts would kill the connection regardless and warning alerts are useless. We
previously stopped accepting fragmented alerts but still allowed them doubled
up.
This is in preparation for pulling the shared alert processing code between TLS
and DTLS out of read_bytes into some common place.
Change-Id: Idbef04e39ad135f9601f5686d41f54531981e0cf
Reviewed-on: https://boringssl-review.googlesource.com/7451
Reviewed-by: Emily Stark (Dunn) <estark@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
In TLS, you never skip the Certificate message. It may be empty, but its
presence is determined by CertificateRequest. (This is sensible.)
In SSL 3.0, the client omits the Certificate message. This means you need to
probe and may receive either Certificate or ClientKeyExchange (thankfully,
ClientKeyExchange is not optional, or we'd have to probe at ChangeCipherSpec).
We didn't have test coverage for this, despite some of this logic being a
little subtle asynchronously. Fix this.
Change-Id: I149490ae5506f02fa0136cb41f8fea381637bf45
Reviewed-on: https://boringssl-review.googlesource.com/7419
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
It's useful to make sure our fuzzer mode works. Not all tests pass, but most
do. (Notably the negative tests for everything we've disabled don't work.) We
can also use then use runner to record fuzzer-mode transcripts with the ciphers
correctly nulled.
Change-Id: Ie41230d654970ce6cf612c0a9d3adf01005522c6
Reviewed-on: https://boringssl-review.googlesource.com/7288
Reviewed-by: Adam Langley <agl@google.com>
Found by libFuzzer combined with some experimental unsafe-fuzzer-mode patches
(to be uploaded once I've cleaned them up a bit) to disable all those pesky
cryptographic checks in the protocol.
Change-Id: I9153164fa56a0c2262c4740a3236c2b49a596b1b
Reviewed-on: https://boringssl-review.googlesource.com/7282
Reviewed-by: Adam Langley <agl@google.com>
This is a minor regression from
https://boringssl-review.googlesource.com/5235.
If the client, for whatever reason, had an ID-based session but also
supports tickets, it will send non-empty ID + empty ticket extension.
If the ticket extension is non-empty, then the ID is not an ID but a
dummy signaling value, so 5235 avoided looking it up. But if it is
present and empty, the ID is still an ID and should be looked up.
This shouldn't have any practical consequences, except if a server
switched from not supporting tickets and then started supporting it,
while keeping the session cache fixed.
Add a test for this case, and tighten up existing ID vs ticket tests so
they fail if we resume with the wrong type.
Change-Id: Id4d08cd809af00af30a2b67fe3a971078e404c75
Reviewed-on: https://boringssl-review.googlesource.com/6554
Reviewed-by: Adam Langley <alangley@gmail.com>
This injects an interface to abstract between elliptic.Curve and a
byte-oriented curve25519. The C implementation will follow a similar
strategy.
Note that this slightly tweaks the order of operations. The client sees
the server public key before sending its own. To keep the abstraction
simple, ecdhCurve expects to generate a keypair before consuming the
peer's public key. Instead, the client handshake stashes the serialized
peer public value and defers parsing it until it comes time to send
ClientKeyExchange. (This is analogous to what it was doing before where
it stashed the parsed peer public value instead.)
BUG=571231
Change-Id: I771bb9aee0dd6903d395c84ec4f2dd7b3e366c75
Reviewed-on: https://boringssl-review.googlesource.com/6777
Reviewed-by: Adam Langley <agl@google.com>
Cover not just the wrong version, but also other mistakes.
Change-Id: I46f05a9a37b7e325adc19084d315a415777d3a46
Reviewed-on: https://boringssl-review.googlesource.com/6610
Reviewed-by: Adam Langley <agl@google.com>
RFC 5746 forbids a server from downgrading or upgrading
renegotiation_info support. Even with SSL_OP_LEGACY_SERVER_CONNECT set
(the default), we can still enforce a few things.
I do not believe this has practical consequences. The attack variant
where the server half is prefixed does not involve a renegotiation on
the client. The converse where the client sees the renegotiation and
prefix does, but we only support renego for the mid-stream HTTP/1.1
client auth hack, which doesn't do this. (And with triple-handshake,
HTTPS clients should be requiring the certificate be unchanged across
renego which makes this moot.)
Ultimately, an application which makes the mistake of using
renegotiation needs to be aware of what exactly that means and how to
handle connection state changing mid-stream. We make renego opt-in now,
so this is a tenable requirement.
(Also the legacy -> secure direction would have been caught by the
server anyway since we send a non-empty RI extension.)
Change-Id: I915965c342f8a9cf3a4b6b32f0a87a00c3df3559
Reviewed-on: https://boringssl-review.googlesource.com/6559
Reviewed-by: Adam Langley <agl@google.com>
This dates to SSLeay 0.9.0. The Internet seems to have completely
forgotten what "D5" is. (I can't find reference to it beyond
documentation of this quirk.) The use counter we added sees virtually no
hits.
Change-Id: I9781d401acb98ce3790b1b165fc257a6f5e9b155
Reviewed-on: https://boringssl-review.googlesource.com/6557
Reviewed-by: Adam Langley <agl@google.com>
yaSSL has a couple of bugs in their DH client implementation. This
change works around the worst of the two.
Firstly, they expect the the DH public value to be the same length as
the prime. This change pads the public value as needed to ensure this.
Secondly, although they handle the first byte of the shared key being
zero, they don't handle the case of the second, third, etc bytes being
zero. So whenever that happens the handshake fails. I don't think that
there's anything that we can do about that one.
Change-Id: I789c9e5739f19449473305d59fe5c3fb9b4a6167
Reviewed-on: https://boringssl-review.googlesource.com/6578
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
