Commit Graph

446 Commits

Author SHA1 Message Date
Matthew Braithwaite
8aaa9e12c2 Remove RC4 from TLS for real.
This withdraws support for -DBORINGSSL_ENABLE_RC4_TLS, and removes the
RC4 AEADs.

Change-Id: I1321b76bfe047d180743fa46d1b81c5d70c64e81
Reviewed-on: https://boringssl-review.googlesource.com/10940
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>
2016-09-16 03:06:36 +00:00
David Benjamin
6e3f5cc7e1 Add SSL_CTX_get_keylog_callback.
Conscrypt would like to write a CTS test that the callback isn't set
unexpectedly.

Change-Id: I11f987422daf0544e90f5cff4d7aaf557ac1f5a2
Reviewed-on: https://boringssl-review.googlesource.com/11060
Reviewed-by: Kenny Root <kroot@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-09-14 19:20:33 +00:00
David Benjamin
4d0be24319 Only allow SSL_set_session before the handshake.
Otherwise things break horribly. Explicitly abort to help catch bugs.

Change-Id: I66e2bf8808199b3331b3adde68d73758a601eb8c
Reviewed-on: https://boringssl-review.googlesource.com/10761
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2016-09-12 19:16:46 +00:00
David Benjamin
f0e935d7ce Fold stack-allocated types into headers.
Now that we have the extern "C++" trick, we can just embed them in the
normal headers. Move the EVP_CIPHER_CTX deleter to cipher.h and, in
doing so, take away a little bit of boilerplate in defining deleters.

Change-Id: I4a4b8d0db5274a3607914d94e76a38996bd611ec
Reviewed-on: https://boringssl-review.googlesource.com/10804
Reviewed-by: Matt Braithwaite <mab@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-09-07 21:50:05 +00:00
Martin Kreichgauer
2aae802d2a Fix a typo in ssl.h.
Change-Id: I431c6e5b8f7de4663ba3db52f6fe0062caaf88ba
Reviewed-on: https://boringssl-review.googlesource.com/10820
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-09-06 21:41:36 +00:00
Matt Braithwaite
d17d74d73f Replace Scoped* heap types with bssl::UniquePtr.
Unlike the Scoped* types, bssl::UniquePtr is available to C++ users, and
offered for a large variety of types.  The 'extern "C++"' trick is used
to make the C++ bits digestible to C callers that wrap header files in
'extern "C"'.

Change-Id: Ifbca4c2997d6628e33028c7d7620c72aff0f862e
Reviewed-on: https://boringssl-review.googlesource.com/10521
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-09-01 22:22:54 +00:00
David Benjamin
163c95691a Forbid EMS from changing during renegotation.
Changing parameters on renegotiation makes all our APIs confusing. This
one has no reason to change, so lock it down. In particular, our
preference to forbid Token Binding + renego may be overridden at the
IETF, even though it's insane. Loosening it will be a bit less of a
headache if EMS can't change.

https://www.ietf.org/mail-archive/web/unbearable/current/msg00690.html
claims that this is already in the specification and enforced by NSS. I
can't find anything to this effect in the specification. It just says
the client MUST disable renegotiation when EMS is missing, which is
wishful thinking. At a glance, NSS doesn't seem to check, though I could
be misunderstanding the code.

Nonetheless, locking this down is a good idea anyway. Accurate or not,
take the email as an implicit endorsement of this from Mozilla.

Change-Id: I236b05991d28bed199763dcf2f47bbfb9d0322d7
Reviewed-on: https://boringssl-review.googlesource.com/10721
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2016-08-30 15:43:35 +00:00
David Benjamin
311c2579f7 Declare SSL_R_BLOCK_CIPHER_PAD_IS_WRONG and SSL_R_NO_CIPHERS_SPECIFIED.
nginx consumes these error codes without #ifdefs. Continue to define
them for compatibility, even though we never emit them.

BUG=95

Change-Id: I1e991987ce25fc4952cc85b98ffa050a8beab92e
Reviewed-on: https://boringssl-review.googlesource.com/10446
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-08-24 01:15:19 +00:00
David Benjamin
0fc37ef082 Fix a number of sigalg scope issues.
peer_sigalgs should live on SSL_HANDSHAKE. This both releases a little
bit of memory after the handshake is over and also avoids the bug where
the sigalgs get dropped if SSL_set_SSL_CTX is called at a bad time. See
also upstream's 14e14bf6964965d02ce89805d9de867f000095aa.

This only affects consumers using the old SNI callback and not
select_certificate_cb.

Add a test that the SNI callback works as expected. In doing so, add an
SSL_CTX version of the signing preferences API. This is a property of
the cert/key pair (really just the key) and should be tied to that. This
makes it a bit easier to have the regression test work with TLS 1.2 too.

I thought we'd fixed this already, but apparently not... :-/

BUG=95

Change-Id: I75b02fad4059e6aa46c3b05183a07d72880711b3
Reviewed-on: https://boringssl-review.googlesource.com/10445
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-08-24 00:24:34 +00:00
David Benjamin
29e5cf7209 Remove SSL_SESSION_get_key_exchange_info.
Chromium has switched to better APIs.

Change-Id: I26209b3a03c6a0db1ddce2f1fc99c8750cf6e56a
Reviewed-on: https://boringssl-review.googlesource.com/10501
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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2016-08-19 20:05:06 +00:00
David Benjamin
7aa31d68fc Remove ssl->verify_result.
Having two copies of this is confusing. This field is inherently tied to
the certificate chain, which lives on SSL_SESSION, so this should live
there too. This also wasn't getting reset correctly on SSL_clear, but
this is now resolved.

Change-Id: I22b1734a93320bb0bf0dc31faa74d77a8e1de906
Reviewed-on: https://boringssl-review.googlesource.com/10283
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-08-19 18:29:43 +00:00
David Benjamin
93d9743def Deprecate and no-op SSL_set_verify_result.
As documented by OpenSSL, it does not interact with session resumption
correctly:
https://www.openssl.org/docs/manmaster/ssl/SSL_set_verify_result.html

Sadly, netty-tcnative calls it, but we should be able to get them to
take it out because it doesn't do anything. Two of the three calls are
immediately after SSL_new. In OpenSSL and BoringSSL as of the previous
commit, this does nothing.

The final call is in verify_callback (see SSL_set_verify). This callback
is called in X509_verify_cert by way of X509_STORE_CTX_set_verify_cb.
As soon as X509_verify_cert returns, ssl->verify_result is clobbered
anyway, so it doesn't do anything.

Within OpenSSL, it's used in testdane.c. As far as I can tell, it does
not actually do a handshake and just uses this function to fake having
done one. (Regardless, we don't need to build against that.)

This is done in preparation for removing ssl->verify_result in favor of
session->verify_result.

Change-Id: I7e32d7f26c44f70136c72e58be05a3a43e62582b
Reviewed-on: https://boringssl-review.googlesource.com/10485
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
2016-08-19 16:24:09 +00:00
Steven Valdez
32635b828f Add limit for consecutive KeyUpdate messages.
Change-Id: I2e1ee319bb9852b9c686f2f297c470db54f72279
Reviewed-on: https://boringssl-review.googlesource.com/10370
Reviewed-by: David Benjamin <davidben@google.com>
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2016-08-18 23:43:12 +00:00
Steven Valdez
4aa154e08f Adding code to send session as PSK Identity.
BUG=75

Change-Id: Ied864cfccbc0e68d71c55c5ab563da27b7253463
Reviewed-on: https://boringssl-review.googlesource.com/9043
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-08-16 20:35:32 +00:00
David Benjamin
3e51757de2 Enforce the server ALPN protocol was advertised.
The server should not be allowed select a protocol that wasn't
advertised. Callers tend to not really notice and act as if some default
were chosen which is unlikely to work very well.

Change-Id: Ib6388db72f05386f854d275bab762ca79e8174e6
Reviewed-on: https://boringssl-review.googlesource.com/10284
Reviewed-by: Adam Langley <agl@google.com>
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2016-08-11 16:46:34 +00:00
David Benjamin
3f54d3f58a Update reference to False Start draft.
Now we have RFC 7918.

Change-Id: Iee2fa890076f74d7fd29fc6dfda6842a3726a8f8
Reviewed-on: https://boringssl-review.googlesource.com/10281
Reviewed-by: Adam Langley <agl@google.com>
2016-08-11 15:49:06 +00:00
David Benjamin
25fe85b38c Insert a state before cert_cb.
If cert_cb runs asynchronously, we end up repeating a large part of very
stateful ClientHello processing. This seems to be mostly fine and there
are few users of server-side cert_cb (it's a new API in 1.0.2), but it's
a little scary.

This is also visible to external consumers because some callbacks get
called multiple times. We especially should try to avoid that as there
is no guarantee that these callbacks are idempotent and give the same
answer each time.

Change-Id: I212b2325eae2cfca0fb423dace101e466c5e5d4e
Reviewed-on: https://boringssl-review.googlesource.com/10224
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
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2016-08-11 15:45:00 +00:00
David Benjamin
e14ff06694 Only have one ClientHello parser, not three.
Between TLS 1.2, TLS 1.3, and the early callback, we've got a lot of
ClientHello parsers. Unify everything on the early callback's parser. As
a side effect, this means we can parse a ClientHello fairly succinctly
from any function which will let us split up ClientHello states where
appropriate.

Change-Id: I2359b75f80926cc7d827570cf33f93029b39e525
Reviewed-on: https://boringssl-review.googlesource.com/10184
Reviewed-by: Adam Langley <agl@google.com>
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2016-08-11 00:35:31 +00:00
Martin Kreichgauer
baafa4a653 Undo rename of tlsext_tick_lifetime_hint.
It was renamed to ticket_liftetime_hint in
1e6f11a7ff, which breaks Qt.

Change-Id: I9c6d3097fe96e669f06a4e0880bd4d7d82b03ba8
Reviewed-on: https://boringssl-review.googlesource.com/10181
Reviewed-by: Adam Langley <agl@google.com>
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2016-08-09 17:50:28 +00:00
David Benjamin
c505c7ce61 Remove TODOEKR comment.
EKR is unlikely to resolve this TODO anytime soon.

Change-Id: I2cf6b4ad4f643048d1a683d60b4b90e2b1230aae
Reviewed-on: https://boringssl-review.googlesource.com/9155
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
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2016-08-09 15:15:46 +00:00
David Benjamin
b9195402b4 Align SSL_SESSION_up_ref with OpenSSL.
Only X509_up_ref left (it's still waiting on a few external callers).

BUG=89

Change-Id: Ia2aec2bb0a944356cb1ce29f3b58a26bdb8a9977
Reviewed-on: https://boringssl-review.googlesource.com/9141
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2016-08-05 19:00:33 +00:00
David Benjamin
a9c3bf142e Add TLS_{client,server}_method.
Inch towards OpenSSL 1.1.0 compatibility.

BUG=91

Change-Id: Ia45b6bdb5114d0891fdffdef0b5868920324ecec
Reviewed-on: https://boringssl-review.googlesource.com/9140
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2016-08-05 18:59:32 +00:00
David Benjamin
33dad1b7a1 Stop pretending to ssl_clear_bad_session.
We broke this to varying degrees ages ago.

This is the logic to implement the variations of rules in TLS to discard
sessions after a failed connection, where a failed connection could be
one of:

- A connection that was not cleanly shut down.

- A connection that received a fatal alert.

The first one is nonsense since close_notify does not actually work in
the real world. The second is a vaguely more plausible but...

- A stateless ticket-based server can't drop sessions anyway.

- In TLS 1.3, a client may receive many tickets over the lifetime of a
  single connection. With an external session cache like ours which may,
  in theory, but multithreaded, this will be a huge hassle to track.

- A client may well attempt to establish a connection and reuse the
  session before we receive the fatal alert, so any application state we
  hope to manage won't really work.

- An attacker can always close the connection before the fatal alert, so
  whatever security policy clearing the session gave is easily
  bypassable.

Implementation-wise, this has basically never worked. The
ssl_clear_bad_session logic called into SSL_CTX_remove_session which
relied on the internal session cache. (Sessions not in the internal
session cache don't get removed.) The internal session cache was only
useful for a server, where tickets prevent this mechanism from doing
anything. For a client, we since removed the internal session cache, so
nothing got removed. The API for a client also did not work as it gave
the SSL_SESSION, not the SSL, so a consumer would not know the key to
invalidate anyway.

The recent session state splitting change further broke this.

Moreover, calling into SSL_CTX_remove_session logic like that is
extremely dubious because it mutates the not_resumable flag on the
SSL_SESSION which isn't thread-safe.

Spec-wise, TLS 1.3 has downgraded the MUST to a SHOULD.

Given all that mess, just remove this code. It is no longer necessary to
call SSL_shutdown just to make session caching work.

Change-Id: Ib601937bfc5f6b40436941e1c86566906bb3165d
Reviewed-on: https://boringssl-review.googlesource.com/9091
Reviewed-by: Adam Langley <agl@google.com>
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2016-08-03 21:07:36 +00:00
Steven Valdez
1e6f11a7ff Adding NewSessionTicket.
We will now send tickets as a server and accept them as a
client. Correctly offering and resuming them in the handshake will be
implemented in a follow-up.

Now that we're actually processing draft 14 tickets, bump the draft
version.

Change-Id: I304320a29c4ffe564fa9c00642a4ace96ff8d871
Reviewed-on: https://boringssl-review.googlesource.com/8982
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-08-03 20:03:20 +00:00
David Benjamin
ce079fda12 Add SSL_is_dtls.
OpenSSL 1.1.0 added a function to tell if an SSL* is DTLS or not. This
is probably a good idea, especially since SSL_version returns
non-normalized versions.

BUG=91

Change-Id: I25c6cf08b2ebabf0c610c74691de103399f729bc
Reviewed-on: https://boringssl-review.googlesource.com/9077
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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2016-08-02 20:43:58 +00:00
David Benjamin
4501bd5118 Align with OpenSSL on SSL_set_bio behavior.
SSL_set_bio is a nightmare.

In f715c42322, we noticed that, among
other problems, SSL_set_bio's actual behavior did not match how
SSL_set_rfd was calling it due to an asymmetry in the rbio/wbio
handling. This resulted in SSL_set_fd/SSL_set_rfd calls to crash.  We
decided that SSL_set_rfd's believed semantics were definitive and
changed SSL_set_bio.

Upstream, in 65e2d672548e7c4bcb28f1c5c835362830b1745b, decided that
SSL_set_bio's behavior, asymmetry and all, was definitive and that the
SSL_set_rfd crash was a bug in SSL_set_rfd. Accordingly, they switched
the fd callers to use the side-specific setters, new in 1.1.0.

Align with upstream's behavior and add tests for all of SSL_set_bio's
insanity. Also export the new side-specific setters in anticipation of
wanting to be mostly compatible with OpenSSL 1.1.0.

Change-Id: Iceac9508711f79750a3cc2ded081b2bb2cbf54d8
Reviewed-on: https://boringssl-review.googlesource.com/9064
Reviewed-by: Adam Langley <agl@google.com>
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2016-08-02 17:50:39 +00:00
Adam Langley
d4aae0f965 Minor typo fixes.
Change-Id: Idf9db184348140972e57b2a8fa30dc9cb8b2e0f2
Reviewed-on: https://boringssl-review.googlesource.com/9065
Reviewed-by: David Benjamin <davidben@google.com>
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2016-08-01 19:49:06 +00:00
Steven Valdez
87eab4902d Splitting SSL session state.
To prevent configuration/established session confusion, the handshake
session state is separated into the configured session (ssl->session)
and the newly created session (ssl->s3->new_session). Upon conclusion of
the handshake, the finalized session is stored
in (ssl->s3->established_session). During the handshake, any requests
for the session (SSL_get_session) return a non-resumable session, to
prevent resumption of a partially filled session. Sessions should only
be cached upon the completion of the full handshake, using the resulting
established_session. The semantics of accessors on the session are
maintained mid-renego.

Change-Id: I4358aecb71fce4fe14a6746c5af1416a69935078
Reviewed-on: https://boringssl-review.googlesource.com/8612
Reviewed-by: David Benjamin <davidben@google.com>
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2016-07-29 21:22:46 +00:00
David Benjamin
163f29af07 Move post-handshake message handling out of read_app_data.
This finishes getting rid of ssl_read_bytes! Now we have separate
entry-points for the various cases. For now, I've kept TLS handshake
consuming records partially. When we do the BIO-less API, I expect that
will need to change, since we won't have the record buffer available.

(Instead, the ssl3_read_handshake_bytes and extend_handshake_buffer pair
will look more like the DTLS side or Go and pull the entire record into
init_buf.)

This change opts to make read_app_data drive the message to completion
in anticipation of DTLS 1.3. That hasn't been specified, but
NewSessionTicket certainly will exist. Knowing that DTLS necessarily has
interleave seems something better suited for the SSL_PROTOCOL_METHOD
internals to drive.

It needs refining, but SSL_PROTOCOL_METHOD is now actually a half-decent
abstraction boundary between the higher-level protocol logic and
DTLS/TLS-specific record-layer and message dispatchy bits.

BUG=83

Change-Id: I9b4626bb8a29d9cb30174d9e6912bb420ed45aff
Reviewed-on: https://boringssl-review.googlesource.com/9001
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2016-07-29 21:05:49 +00:00
David Benjamin
9fd9580137 Remove ssl->s3->message_complete in favor of ssl->init_msg.
This was only used so we knew when we had a current message to discard
and when we didn't. With init_msg being tracked better, we can use that
instead.

As part of this, switch the V2ClientHello hack to not using
reuse_message. Otherwise we have to fill in init_msg and friends in two
places.

The next change will require that we have a better handle on the "is
there a current message" boolean.

BUG=83

Change-Id: I917efacbad10806d492bbe51eda74c0779084d60
Reviewed-on: https://boringssl-review.googlesource.com/8987
Reviewed-by: Adam Langley <agl@google.com>
2016-07-28 22:52:47 +00:00
David Benjamin
1d4f4c0123 Add SSL_send_fatal_alert.
WebRTC want to be able to send a random alert. Add an API for this.

Change-Id: Id3113d68f25748729fd9e9a91dbbfa93eead12c3
Reviewed-on: https://boringssl-review.googlesource.com/8950
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
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2016-07-26 22:32:18 +00:00
David Benjamin
0e04498934 Fix funny line-wrapping.
Change-Id: I5afb917ff151a1cd19cb03152348b5e2eb774e55
Reviewed-on: https://boringssl-review.googlesource.com/8884
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
2016-07-25 15:01:10 +00:00
David Benjamin
5e7e7cc696 Add SSL_set_fallback_version.
Alas, we will need a version fallback for TLS 1.3 again.

This deprecates SSL_MODE_SEND_FALLBACK_SCSV. Rather than supplying a
boolean, have BoringSSL be aware of the real maximum version so we can
change the TLS 1.3 anti-downgrade logic to kick in, even when
max_version is set to 1.2.

The fallback version replaces the maximum version when it is set for
almost all purposes, except for downgrade protection purposes.

BUG=chromium:630165

Change-Id: I4c841dcbc6e55a282b223dfe169ac89c83c8a01f
Reviewed-on: https://boringssl-review.googlesource.com/8882
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2016-07-22 14:47:47 +00:00
David Benjamin
84f8551753 Move deprecated SSL_OP_* values back to the top.
We try to keep the deprecated values hidden, but if we do that, we won't
be able to allocate new constants without knowing which collide.

Change-Id: I3f249639bdf8869b2c83f3efdadd98b63ed839be
Reviewed-on: https://boringssl-review.googlesource.com/8881
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>
2016-07-21 16:21:03 +00:00
Steven Valdez
143e8b3fd9 Add TLS 1.3 1-RTT.
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>
2016-07-18 09:54:46 +00:00
David Benjamin
61672818ef Check for buffered handshake messages on cipher change in DTLS.
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>
2016-07-16 08:25:02 +00:00
David Benjamin
d8ba86d84f Add a table for porting SSL_CTX_ctrl code.
It was pointed out that the equivalent values may sometimes be hard to
find.

Change-Id: I02a1790e026047b3dc2034c2f9ad75abc9e59eb7
Reviewed-on: https://boringssl-review.googlesource.com/8800
Reviewed-by: Adam Langley <agl@google.com>
2016-07-15 22:41:06 +00:00
David Benjamin
d3440b4d63 Give SSL_PRIVATE_KEY_METHOD a message-based API.
This allows us to implement custom RSA-PSS-based keys, so the async TLS
1.3 tests can proceed. For now, both sign and sign_digest exist, so
downstreams only need to manage a small change atomically. We'll remove
sign_digest separately.

In doing so, fold all the *_complete hooks into a single complete hook
as no one who implemented two operations ever used different function
pointers for them.

While I'm here, I've bumped BORINGSSL_API_VERSION. I do not believe we
have any SSL_PRIVATE_KEY_METHOD versions who cannot update atomically,
but save a round-trip in case we do. It's free.

Change-Id: I7f031aabfb3343805deee429b9e244aed5d76aed
Reviewed-on: https://boringssl-review.googlesource.com/8786
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>
2016-07-15 18:26:45 +00:00
David Benjamin
0c0b7e1e1f Widen SSL_PRIVATE_KEY_METHOD types to include the curve name.
This makes custom private keys and EVP_PKEYs symmetric again. There is
no longer a requirement that the caller pre-filter the configured
signing prefs.

Also switch EVP_PKEY_RSA to NID_rsaEncryption. These are identical, but
if some key types are to be NIDs, we should make them all NIDs.

Change-Id: I82ea41c27a3c57f4c4401ffe1ccad406783e4c64
Reviewed-on: https://boringssl-review.googlesource.com/8785
Reviewed-by: David Benjamin <davidben@google.com>
2016-07-15 18:17:32 +00:00
David Benjamin
ca3d545d7f Add SSL_set_signing_algorithm_prefs.
This gives us a sigalg-based API for configuring signing algorithms.

Change-Id: Ib746a56ebd1061eadd2620cdb140d5171b59bc02
Reviewed-on: https://boringssl-review.googlesource.com/8784
Reviewed-by: Adam Langley <agl@google.com>
2016-07-15 18:10:29 +00:00
David Benjamin
90bf7104de Reformat some macros.
clang-format is being really insistent on reformatting these even when I
tell it only to reformat a small region far away.

Change-Id: I46cfd40e8c8658b73caee9c7deae65265c42f762
Reviewed-on: https://boringssl-review.googlesource.com/8787
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>
2016-07-14 19:19:59 +00:00
David Benjamin
1f61f0d7c3 Implement TLS 1.3's downgrade signal.
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>
2016-07-12 19:17:43 +00:00
David Benjamin
ea9a0d5313 Refine SHA-1 default in signature algorithm negotiation.
Rather than blindly select SHA-1 if we can't find a matching one, act as
if the peer advertised rsa_pkcs1_sha1 and ecdsa_sha1. This means that we
will fail the handshake if no common algorithm may be found.

This is done in preparation for removing the SHA-1 default in TLS 1.3.

Change-Id: I3584947909d3d6988b940f9404044cace265b20d
Reviewed-on: https://boringssl-review.googlesource.com/8695
Reviewed-by: David Benjamin <davidben@google.com>
2016-07-12 16:32:31 +00:00
Adam Langley
d2b5af56cf Revert scoped_types.h change.
This reverts commits:
8d79ed6740
19fdcb5234
8d79ed6740

Because WebRTC (at least) includes our headers in an extern "C" block,
which precludes having any C++ in them.

Change-Id: Ia849f43795a40034cbd45b22ea680b51aab28b2d
2016-07-12 08:05:38 -07:00
Adam Langley
8d79ed6740 Assume that MSVC supports C++11.
MSVC doesn't define __cplusplus as 201103 to indicate C++11 support, so
just assume that the compiler supports C++11 if _MSC_VER is defined.

Change-Id: I27f6eeefe6e8dc522470f36fab76ab36d85eebac
Reviewed-on: https://boringssl-review.googlesource.com/8734
Reviewed-by: David Benjamin <davidben@google.com>
2016-07-12 00:04:04 +00:00
Adam Langley
8c3c3135a2 Remove scoped_types.h.
This change scatters the contents of the two scoped_types.h files into
the headers for each of the areas of the code. The types are now in the
|bssl| namespace.

Change-Id: I802b8de68fba4786b6a0ac1bacd11d81d5842423
Reviewed-on: https://boringssl-review.googlesource.com/8731
Reviewed-by: Adam Langley <agl@google.com>
2016-07-11 23:08:27 +00:00
David Benjamin
09eb655e5c Simplify ssl_get_message somewhat.
It still places the current message all over the place, but remove the
bizarre init_num/error/ok split. Now callers get the message length out
of init_num, which mirrors init_msg. Also fix some signedness.

Change-Id: Ic2e97b6b99e234926504ff217b8aedae85ba6596
Reviewed-on: https://boringssl-review.googlesource.com/8690
Reviewed-by: David Benjamin <davidben@google.com>
2016-07-11 23:01:32 +00:00
David Benjamin
7a4b404da5 Remove SSL_get_server_key_exchange_hash.
Chromium no longer uses it.

Change-Id: I50cc55bad4124305686d299032a2e8ed2cb9d0d7
Reviewed-on: https://boringssl-review.googlesource.com/8691
Reviewed-by: David Benjamin <davidben@google.com>
2016-07-11 18:28:28 +00:00
David Benjamin
4dbdf94c67 Push V2ClientHello handling into ssl3_get_message.
V2ClientHello is going to be ugly wherever we do it, but this hides it
behind the transport method table. It removes a place where the
handshake state machine reaches into ssl3_get_message's internal state.
ssl3_get_message will now silently translate V2ClientHellos into true
ClientHellos and manage the handshake hash appropriately.

Now the only accesses of init_buf from the handshake state machines are
to create and destroy the buffer.

Change-Id: I81467a038f6ac472a465eec7486a443fe50a98e1
Reviewed-on: https://boringssl-review.googlesource.com/8641
Reviewed-by: Adam Langley <agl@google.com>
2016-07-07 23:51:25 +00:00
Adam Langley
84cd159bad Add SSL_CTX_up_ref.
Upstream added this in a18a31e49d266. The various *_up_ref functions
return a variety of types, but this one returns int because upstream
appears to be trying to unify around that. (See upstream's c5ebfcab713.)

Change-Id: I7e1cfe78c3a32f5a85b1b3c14428bd91548aba6d
Reviewed-on: https://boringssl-review.googlesource.com/8581
Reviewed-by: Adam Langley <alangley@gmail.com>
2016-07-01 21:46:53 +00:00