This is a really dumb API wart. Now that we have a limited set of curves that
are all reasonable, the automatic logic should just always kick in. This makes
set_ecdh_auto a no-op and, instead of making it the first choice, uses it as
the fallback behavior should none of the older curve selection APIs be used.
Currently, by default, server sockets can only use the plain RSA key exchange.
BUG=481139
Change-Id: Iaabc82de766cd00968844a71aaac29bd59841cd4
Reviewed-on: https://boringssl-review.googlesource.com/4531
Reviewed-by: Adam Langley <agl@google.com>
It's no longer needed to distinguish ciphers from fake ciphers.
Change-Id: I1ad4990ba936b1059eb48f3d2f309eb832dd1cb5
Reviewed-on: https://boringssl-review.googlesource.com/4285
Reviewed-by: Adam Langley <agl@google.com>
Rather than shoehorn real ciphers and cipher aliases into the same type (that's
what cipher->valid is used for), treat them separately. Make
ssl_cipher_apply_rule match ciphers by cipher_id (the parameter was ignored and
we assumed that masks uniquely identify a cipher) and remove the special cases
around zero for all the masks. This requires us to remember which fields
default to 0 and which default to ~0u, but the logic is much clearer.
Finally, now that ciphers and cipher aliases are different, don't process rules
which sum together an actual cipher with cipher aliases. This would AND
together the masks for the alias with the values in the cipher and do something
weird around alg_ssl. (alg_ssl is just weird in general, as everyone trying to
disable SSLv3 in OpenSSL recently discovered.)
With all that, we can finally remove cipher->valid which was always one.
Change-Id: Iefcfe159bd6c22dbaea3a5f1517bd82f756dcfe1
Reviewed-on: https://boringssl-review.googlesource.com/4284
Reviewed-by: Adam Langley <agl@google.com>
These are all masks of some sort (except id which is a combined version and
cipher), so they should use fixed-size unsigned integers.
Change-Id: I058dd8ad231ee747df4b4fb17d9c1e2cbee21918
Reviewed-on: https://boringssl-review.googlesource.com/4283
Reviewed-by: Adam Langley <agl@google.com>
The rest of ssl/ still includes things everywhere, but this at least fixes the
includes that were implicit from ssl/internal.h.
Change-Id: I7ed22590aca0fe78af84fd99a3e557f4b05f6782
Reviewed-on: https://boringssl-review.googlesource.com/4281
Reviewed-by: Adam Langley <agl@google.com>
Match the other internal headers.
Change-Id: Iff7e2dd06a1a7bf993053d0464cc15638ace3aaa
Reviewed-on: https://boringssl-review.googlesource.com/4280
Reviewed-by: Adam Langley <agl@google.com>
These are the remaining untested cipher suites. Rather than add support in
runner.go, just remove them altogether. Grepping for this is a little tricky,
but nothing enables aNULL (all occurrences disable it), and all occurrences of
["ALL:] seem to be either unused or explicitly disable anonymous ciphers.
Change-Id: I4fd4b8dc6a273d6c04a26e93839641ddf738343f
Reviewed-on: https://boringssl-review.googlesource.com/4258
Reviewed-by: Adam Langley <agl@google.com>
There's multiple sets of APIs for selecting the curve. Fold away
SSL_OP_SINGLE_ECDH_USE as failing to set it is either a no-op or a bug. With
that gone, the consumer only needs to control the selection of a curve, with
key generation from then on being uniform. Also clean up the interaction
between the three API modes in s3_srvr.c; they were already mutually exclusive
due to tls1_check_ec_tmp_key.
This also removes all callers of EC_KEY_dup (and thus CRYPTO_dup_ex_data)
within the library.
Change-Id: I477b13bd9e77eb03d944ef631dd521639968dc8c
Reviewed-on: https://boringssl-review.googlesource.com/4200
Reviewed-by: Adam Langley <agl@google.com>
Align with upstream's renames from a while ago. These names are considerably
more standard. This also aligns with upstream in that both "ECDHE" and "EECDH"
are now accepted in the various cipher string parsing bits.
Change-Id: I84c3daeacf806f79f12bc661c314941828656b04
Reviewed-on: https://boringssl-review.googlesource.com/4053
Reviewed-by: Adam Langley <agl@google.com>
It created the cert structure in SSL_CTX or SSL if it was NULL, but they can
never be NULL as the comments already said.
(Imported from upstream's 2c3823491d8812560922a58677e3ad2db4b2ec8d.)
Change-Id: I97c7bb306d6f3c18597850db9f08023b2ef74839
Reviewed-on: https://boringssl-review.googlesource.com/4042
Reviewed-by: Adam Langley <agl@google.com>
None of these are version-specific. SSL_PROTOCOL_METHOD's interface will change
later, but this gets us closer to folding away SSL3_ENC_METHOD.
Change-Id: Ib427cdff32d0701a18fe42a52cdbf798f82ba956
Reviewed-on: https://boringssl-review.googlesource.com/3769
Reviewed-by: Adam Langley <agl@google.com>
Upstream settled in this API, and it's also the one that we expect
internally and that third_party code will expect.
Change-Id: Id7af68cf0af1f2e4d9defd37bda2218d70e2aa7b
Reviewed-on: https://boringssl-review.googlesource.com/3542
Reviewed-by: Adam Langley <agl@google.com>
It may fail because the BIO_write to the memory BIO can allocate.
Unfortunately, this bubbles up pretty far up now that we've moved the handshake
hash to ssl3_set_handshake_header.
Change-Id: I58884347a4456bb974ac4783078131522167e29d
Reviewed-on: https://boringssl-review.googlesource.com/3483
Reviewed-by: Adam Langley <agl@google.com>
OpenSSL's internal names for the ciphers are not the standard ones and are not
easy to consistently map to the standard ones. Add an API to get the real names
out. (WebRTC wants an API to get the standard names out.)
Also change some incorrect flags on SHA-256 TLS 1.2 ciphers;
SSL_HANDSHAKE_MAC_DEFAULT and SSL_HANDSHAKE_MAC_SHA256 are the same after TLS
1.2. A TLS 1.2 cipher should be tagged explicitly with SHA-256. (This avoids
tripping a check in SSL_CIPHER_get_rfc_name which asserts that default-hash
ciphers only ever use SHA-1 or MD5 for the bulk cipher MAC.)
Change-Id: Iaec2fd4aa97df29883094d3c2ae60f0ba003bf07
This makes the following changes:
- SSL_cutthrough_complete no longer rederives whether cutthrough happened and
just maintains a handshake bit.
- SSL_in_init no longer returns true if we are False Starting but haven't
completed the handshake. That logic was awkward as it depended on querying
in_read_app_data to force SSL_read to flush the entire handshake. Defaulting
SSL_in_init to continue querying the full handshake and special-casing
SSL_write is better. E.g. the check in bidirectional SSL_shutdown wants to know
if we're in a handshake. No internal consumer of
SSL_MODE_HANDSHAKE_CUTTHROUGH ever queries SSL_in_init directly.
- in_read_app_data is gone now that the final use is dead.
Change-Id: I05211a116d684054dfef53075cd277b1b30623b5
Reviewed-on: https://boringssl-review.googlesource.com/3336
Reviewed-by: Adam Langley <agl@google.com>
This is the source of much of renegotiation's complexity, and of OpenSSL's
implementation of it. In practice, we only care about renegotiation because of
the client auth hack. There, we can safely assume that no server will send
application data between sending the HelloRequest and completing the handshake.
BUG=429450
Change-Id: I37f5abea5fdedb1d53e24ceb11f71287c74bb777
Reviewed-on: https://boringssl-review.googlesource.com/3332
Reviewed-by: Adam Langley <agl@google.com>
They both happen to be zero, but OBJ_undef is a type error; OBJ_foo expands to
a comma-separated list of integers.
Change-Id: Ia5907dd3bc83240b7cc98af6456115d2efb48687
Reviewed-on: https://boringssl-review.googlesource.com/2842
Reviewed-by: Adam Langley <agl@google.com>
This introduces another knob into SSL_AEAD_CTX to omit the version from the ad
parameter. It also allows us to fold a few more SSL3_ENC_METHOD hooks together.
Change-Id: I6540d410d4722f734093554fb434dab6e5217d4f
Reviewed-on: https://boringssl-review.googlesource.com/2698
Reviewed-by: Adam Langley <agl@google.com>
This lets us fold away the SSLv3-specific generate_master_secret. Once SSLv3
uses AEADs, others will fold away as well.
Change-Id: I27c1b75741823bc6db920d35f5dd5ce71b6fdbb3
Reviewed-on: https://boringssl-review.googlesource.com/2697
Reviewed-by: Adam Langley <agl@google.com>
The EVP_CIPHER codepath should no longer be used with TLS. It still exists for
DTLS and SSLv3. The AEAD construction in TLS does not allow for
variable-overhead AEADs, so stateful AEADs do not include the length in the ad
parameter. Rather the AEADs internally append the unpadded length once it is
known. EVP_aead_rc4_md5_tls is modified to account for this.
Tests are added (and RC4-MD5's regenerated) for each of the new AEADs. The
cipher tests are all moved into crypto/cipher/test because there's now a lot of
them and they clutter the directory listing.
In ssl/, the stateful AEAD logic is also modified to account for stateful AEADs
with a fixed IV component, and for AEADs which use a random nonce (for the
explicit-IV CBC mode ciphers).
The new implementation fixes a bug/quirk in stateless CBC mode ciphers where
the fixed IV portion of the keyblock was generated regardless. This is at the
end, so it's only relevant for EAP-TLS which generates a MSK from the end of
the key block.
Change-Id: I2d8b8aa11deb43bde2fd733f4f90b5d5b8cb1334
Reviewed-on: https://boringssl-review.googlesource.com/2692
Reviewed-by: Adam Langley <agl@google.com>
State on s3 gets freed in both ssl3_clear and ssl3_free. Considate to just
ssl3_free. This replaces the (SSL,ssl,ssl3)_clear calls in (SSL,ssl,ssl3)_new
with the state that was initialized. This results in a little code duplication
between SSL_new and SSL_clear because state is on the wrong object. I've just
left TODOs for now; some of it will need disentangling.
We're far from it, but going forward, separate state between s and s->s3 as:
- s contains configuration state, DTLS or TLS. It is initialized from SSL_CTX,
configurable directly afterwards, and preserved across SSL_clear calls.
(Including when it's implicitly set as part of a handshake callback.)
- Connection state hangs off s->s3 (TLS) and s->d1 (DTLS). It is reset across
SSL_clear. This should happen naturally out of a ssl_free/ssl_new pair.
The goal is to avoid needing separate initialize and reset code for anything;
the point any particular state is reset is the point its owning context is
destroyed and recreated.
Change-Id: I5d779010778109f8c339c07433a0777feaf94d1f
Reviewed-on: https://boringssl-review.googlesource.com/2822
Reviewed-by: Adam Langley <agl@google.com>
Configuration data inherited from the ctx happens in SSL_new. (This also gets
in the way of using ssl3_free/ssl3_new to implement SSL_clear.)
Change-Id: I2773af91abf4e1edc0c1a324bc1e94088d7c2274
Reviewed-on: https://boringssl-review.googlesource.com/2821
Reviewed-by: Adam Langley <agl@google.com>
This avoids needing a should_add_to_finished_hash boolean on do_write. The
logic in do_write was a little awkward because do_write would be called
multiple times if the write took several iterations. This also gets complex if
DTLS retransmits are involved. (At a glance, it's not obvious the
BIO_CTRL_DGRAM_MTU_EXCEEDED case actually works.)
Doing it as the handshake message is being prepared avoids this concern. It
also gives a natural point for the extended master secret logic which needs to
do work after the finished hash has been sampled.
As a bonus, we can remove s->d1->retransmitting which was only used to deal
with this issue.
Change-Id: Ifedf23ee4a6c5e08f960d296a6eb1f337a16dc7a
Reviewed-on: https://boringssl-review.googlesource.com/2604
Reviewed-by: Adam Langley <agl@google.com>
This makes SSLv23_method go through DTLS_ANY_VERSION's version negotiation
logic. This allows us to get rid of duplicate ClientHello logic. For
compatibility, SSL_METHOD is now split into SSL_PROTOCOL_METHOD and a version.
The legacy version-locked methods set min_version and max_version based this
version field to emulate the original semantics.
As a bonus, we can now handle fragmented ClientHello versions now.
Because SSLv23_method is a silly name, deprecate that too and introduce
TLS_method.
Change-Id: I8b3df2b427ae34c44ecf972f466ad64dc3dbb171
Tested manually by replacing SSLv23_method() with TLSv1_2_method() in
bssl_shim. This is a large chunk of code which is not run in SSLv23_method(),
but it will be run after unification. It's split out separately to ease review.
Change-Id: I6bd241daca17aa0f9b3e36e51864a29755a41097
SSL3_ENC_METHOD will remain version-specific while SSL_METHOD will become
protocol-specific. This finally removes all the version-specific portions of
SSL_METHOD but the version tag itself.
(SSL3_ENC_METHOD's version-specific bits themselves can probably be handled by
tracking a canonicalized protocol version. It would simplify version
comparisons anyway. The one catch is SSLv3 has a very different table. But
that's a cleanup for future. Then again, perhaps a version-specific method
table swap somewhere will be useful later for TLS 1.3.)
Much of this commit was generated with sed invocation:
s/method->ssl3_enc/enc_method/g
Change-Id: I2b192507876aadd4f9310240687e562e56e6c0b1
Reviewed-on: https://boringssl-review.googlesource.com/2581
Reviewed-by: Adam Langley <agl@google.com>
SSL_ST_BEFORE isn't a possible state anymore. It seems this state meant the
side wasn't known, back in the early SSLeay days. Now upstream guesses
(sometimes incorrectly with generic methods), and we don't initialize until
later. SSL_shutdown also doesn't bother to call ssl3_shutdown at all if the
side isn't initialized and SSL_ST_BEFORE isn't the uninitialized state, which
seems a much more sensible arrangement.
Likewise, because bare SSL_ST_BEFOREs no longer exist, SSL_in_init implies
SSL_in_before and there is no need to check both.
Change-Id: Ie680838b2f860b895073dabb4d759996e21c2824
Reviewed-on: https://boringssl-review.googlesource.com/2564
Reviewed-by: Adam Langley <agl@google.com>
There's an undefined one not used anywhere. The others ought to be const. Also
move the forward declaration to ssl.h so we don't have to use the struct name.
Change-Id: I76684cf65255535c677ec19154cac74317c289ba
Reviewed-on: https://boringssl-review.googlesource.com/2561
Reviewed-by: Adam Langley <agl@google.com>
Supporting both schemes seems pointless. Now that s->server and s->state are
set appropriately late and get_ssl_method is gone, the only difference is that
the client/server ones have non-functional ssl_accept or ssl_connect hooks. We
can't lose the generic ones, so let's unify on that.
Note: this means a static linker will no longer drop the client or server
handshake code if unused by a consumer linking statically. However, Chromium
needs the server half anyway for DTLS and WebRTC, so that's probably a lost
cause. Android also exposes server APIs.
Change-Id: I290f5fb4ed558f59fadb5d1f84e9d9c405004c23
Reviewed-on: https://boringssl-review.googlesource.com/2440
Reviewed-by: Adam Langley <agl@google.com>
It's unused. Also per the previous commit message, it historically had a bug
anyway.
Change-Id: I5868641e7938ddebbc0ffd72d218c81cd17c7739
Reviewed-on: https://boringssl-review.googlesource.com/2437
Reviewed-by: Adam Langley <agl@google.com>
s->server's value isn't final until SSL_connect or SSL_accept is called when
using the generic SSLv23_method or DTLS_method rather than the version-locked
ones. This makes the tests pass if bssl_shim uses those methods.
It would be nicer if the generic methods were gone and an SSL* could know from
creation which half it's destined for. Unfortunately, there's a lot of code
that uses those generic methods, so we probably can't get rid of them. If they
have to stay, it seems better to standardize on only having those, rather than
support both, even if standardizing on the side-specific ones would be
preferable.
Change-Id: I40e65a8842cd6706da92263a263f664336a7f3b3
Reviewed-on: https://boringssl-review.googlesource.com/2434
Reviewed-by: Adam Langley <agl@google.com>
CERT_PKEY_SIGN isn't meaningful since, without strict mode, we always fall back
to SHA-1 anyway. So the digest is never NULL when CERT_PKEY_SIGN is computed.
The entire valid_flags is now back to it's pre-1.0.2 check of seeing if the
certificate and key are configured.
This finally removes the sensitivity between valid_flags and selecting the
digest, so we can defer choosing the digest all we like.
Change-Id: I9f9952498f512d7f0cc799497f7c5b52145a48af
Reviewed-on: https://boringssl-review.googlesource.com/2288
Reviewed-by: Adam Langley <agl@google.com>
It doesn't depend on the cipher now that export ciphers are gone. It need only
be called once. Also remove the valid bit; nothing ever reads it. Its output is
also only used within a function, so make mask_k and mask_a local variables.
So all the configuration-based checks are in one place, change the input
parameter from CERT to SSL and move the PSK and ECDHE checks to the mask
computation. This avoids having to evaluate the temporary EC key for each
cipher.
The remaining uses are on the client which uses them differently (disabled
features rather than enabled ones). Those too may as well be local variables,
so leave a TODO.
Change-Id: Ibcb574341795d4016ea749f0290a793eed798874
Reviewed-on: https://boringssl-review.googlesource.com/2287
Reviewed-by: Adam Langley <agl@google.com>
This is new in OpenSSL 1.0.2 so it isn't used anywhere. Cuts down slightly on
connection-global state associated with signature algorithm processing.
Repurposing the digest field to mean both "the digest we choose to sign with
this key" and "the digest the last signature we saw happened to use" is
confusing.
Change-Id: Iec4d5078c33e271c8c7b0ab221c356ee8480b89d
Reviewed-on: https://boringssl-review.googlesource.com/2281
Reviewed-by: Adam Langley <agl@google.com>
There's not much point in retaining the identity hint in the SSL_SESSION. This
avoids the complexity around setting psk_identity hint on either the SSL or the
SSL_SESSION. Introduce a peer_psk_identity_hint for the client to store the one
received from the server.
This changes the semantics of SSL_get_psk_identity_hint; it now only returns
the value configured for the server. The client learns the hint through the
callback. This is compatible with the one use of this API in conscrypt (it
pulls the hint back out to pass to a callback).
Change-Id: I6d9131636b47f13ac5800b4451436a057021054a
Reviewed-on: https://boringssl-review.googlesource.com/2213
Reviewed-by: Adam Langley <agl@google.com>
This is an experimental flag that dates back to SSLeay 0.8.1b or earlier. It's
never set internally and never set in consumers.
Change-Id: I922583635c9f3d8d93f08f1707531ad22a26ae6a
Reviewed-on: https://boringssl-review.googlesource.com/2214
Reviewed-by: Adam Langley <agl@google.com>
Server-side support was removed in 77a942b7fedb58ae1afee042255b4b9267abebca,
but client-side support was retained as it appeared NSS supported this.
However, this is not the case: ssl3_HandleServerKeyExchange only allows a
ServerKeyExchange message if hs.ws is in an appropriate state.
ssl3_AuthCertificate only sets it to allow ServerKeyExchange if it is a key
exchange that normally uses it or if is_limited is set. is_limited is only set
for the export cipher suites.
Thus we can safely remove this without waiting on gathering UMA data.
BUG=chromium:400587
Change-Id: I9aefb742dbb2d99c13340ab48017e1ceee04bc2f
Reviewed-on: https://boringssl-review.googlesource.com/2230
Reviewed-by: Adam Langley <agl@google.com>
State hanging off the SSL gets freed in two places.
Change-Id: I41a8d2a7cab35f0098396006e1f6380038ec471a
Reviewed-on: https://boringssl-review.googlesource.com/2212
Reviewed-by: Adam Langley <agl@google.com>
There's no need to store them on the session. They're temporary handshake
state and weren't serialized in d2i_SSL_SESSION anyway.
Change-Id: I830d378ab49aaa4fc6c4c7a6a8c035e2263fb763
Reviewed-on: https://boringssl-review.googlesource.com/1990
Reviewed-by: Adam Langley <agl@google.com>
This resolves a pile of MSVC warnings in Chromium.
Change-Id: Ib9a29cb88d8ed8ec4118d153260f775be059a803
Reviewed-on: https://boringssl-review.googlesource.com/1865
Reviewed-by: Adam Langley <agl@google.com>
This avoids the strange optional parameter thing by moving it to the client.
Also document what the functions should do.
Change-Id: I361266acadedfd2bfc4731f0900821fc2c2f954d
Reviewed-on: https://boringssl-review.googlesource.com/1843
Reviewed-by: Adam Langley <agl@google.com>
Splitting the strength mask between SSL_EXP_MASK and SSL_STRONG_MASK no longer
does anything. Also remove the SSL_NOT_EXP bit and condense the strength bits.
Change-Id: I9e61acdde008c3ce06bb37f78a72099fc53ed080
Reviewed-on: https://boringssl-review.googlesource.com/1757
Reviewed-by: Adam Langley <agl@google.com>
Remove the old implementation which was excessively general. This mirrors the
SCT support and adds a single boolean flag to request an OCSP response with no
responder IDs, extensions, or frills. The response, if received, is stored on
the SSL_SESSION so that it is available for (re)validation on session
resumption; Chromium revalidates the saved auth parameters on resume.
Server support is unimplemented for now. This API will also need to be adjusted
in the future if we implement RFC 6961.
Change-Id: I533c029b7f7ea622d814d05f934fdace2da85cb1
Reviewed-on: https://boringssl-review.googlesource.com/1671
Reviewed-by: Adam Langley <agl@google.com>
Get all this stuff out of the way.
- OPENSSL_NO_MD5
- OPENSSL_NO_SHA
- OPENSSL_NO_EC
- OPENSSL_NO_ECDSA
- OPENSSL_NO_ECDH
- OPENSSL_NO_NEXTPROTONEG
- OPENSSL_NO_DH
- OPENSSL_NO_SSL3
- OPENSSL_NO_RC4
- OPENSSL_NO_RSA
Also manually removed a couple instances of OPENSSL_NO_DSA that seemed to be
confused anyway. Did some minor manual cleanup. (Removed a few now-pointless
'if (0)'s.)
Change-Id: Id540ba97ee22ff2309ab20ceb24c7eabe766d4c4
Reviewed-on: https://boringssl-review.googlesource.com/1662
Reviewed-by: Adam Langley <agl@google.com>
David Benjamin
Adam Langley