It just inserts extra flushes everywhere and isn't used.
Change-Id: I082e4bada405611f4986ba852dd5575265854036
Reviewed-on: https://boringssl-review.googlesource.com/2456
Reviewed-by: Adam Langley <agl@google.com>
Use it in ssl3_cert_verify_hash so signing a pre-TLS-1.2 handshake hash can go
through RSA_sign and be intercepted via RSA_METHOD appropriately. This avoids
Windows needing to intercept sign_raw. (CAPI keys cannot provide sign_raw,
unless the input size happens to be that of NID_md5_sha1.)
Also use it in processing ServerKeyExchange to avoid special-casing RSA.
BUG=crbug.com/437023
Change-Id: Ia07433f468b75fdf7bfc8fa90c9751639b2478e6
Reviewed-on: https://boringssl-review.googlesource.com/2420
Reviewed-by: David Benjamin <davidben@google.com>
Replace the comment with a clearer one and reimplement it much more tidily. The
mask thing was more complicated than was needed.
This slightly changes behavior on the DTLS_ANY_VERSION side in that, if only
one method is enabled, we no longer short-circuit to the version-locked method
early. This "optimization" seems unnecessary.
Change-Id: I571c8b60ed16bd4357c67d65df0dd1ef9cc5eb57
Reviewed-on: https://boringssl-review.googlesource.com/2451
Reviewed-by: Adam Langley <agl@google.com>
It should be set correctly prior to entering the handshake. Don't mask bugs by
assigning it.
Change-Id: Ib9bca8fad68916b3b242aad8819e3760e59e777a
Reviewed-on: https://boringssl-review.googlesource.com/2443
Reviewed-by: Adam Langley <agl@google.com>
first_packet is a temporary connection-global flag set for the duration of some
call and then queried from other code. This kind of logic is too difficult to
reason through. It also incorrectly treats renegotiate ClientHellos as
pre-version-negotiation records. This eliminates the need to query
enc_write_ctx (which wasn't EVP_AEAD-aware anyway).
Instead, take a leaf from Go TLS's book and add a have_version bit. This is
placed on s->s3 as it is connection state; s->s3 automatically gets reset on
SSL_clear while s doesn't.
This new flag will also be used to determine whether to do the V2ClientHello
sniff when the version-locked methods merge into SSLv23_method. It will also
replace needing to condition s->method against a dummy DTLS_ANY_VERSION value
to determine whether DTLS version negotiation has happened yet.
Change-Id: I5c8bc6258b182ba4ab175a48a84eab6d3a001333
Reviewed-on: https://boringssl-review.googlesource.com/2442
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>
If the state is SSL_ST_BEFORE, the SSL* was just initialized. Otherwise, we
don't want to call SSL_clear. The one case I found where we do is if a
handshake message is received and someone sets
SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS. This is apparently intended for external
consumers to set, but I see no code in Google that does.
Which is fortunate because it'll trigger SSL_clear. This retains the BIOs but
drops all connection state, including the record. If the client just initiated
renego, that's the ClientHello that's lost. The connection then hangs: the now
reset SSL* wants a ClientHello (under the null cipher because that too's been
dropped) while the peer wants an encrypted ServerHello.
Change-Id: Iddb3e0bb86d39d98155b060f9273a0856f2d1409
Reviewed-on: https://boringssl-review.googlesource.com/2436
Reviewed-by: Adam Langley <agl@google.com>
SSL_ST_BEFORE is never standalone. As of upstream's
413c4f45ed0508d2242638696b7665f499d68265, SSL_ST_BEFORE is only ever set paired
with SSL_ST_ACCEPT or SSL_ST_CONNECT.
Conversely, SSL_ST_OK is never paired with SSL_ST_ACCEPT or SSL_ST_CONNECT. As
far as I can tell, this combination has never been possible.
Change-Id: Ifbc8f147be821026cf59f3d5038f0dbad3b0a1d2
Reviewed-on: https://boringssl-review.googlesource.com/2433
Reviewed-by: Adam Langley <agl@google.com>
It should already be assigned, as of upstream's
b31b04d951e9b65bde29657e1ae057b76f0f0a73. I believe these assignments are part
of the reason it used to appear to work. Replace them with assertions. So the
assertions are actually valid, check in SSL_connect / SSL_accept that they are
never called if the socket had been placed in the opposite state. (Or we'd be
in another place where it would have appeared to work with the handshake
functions fixing things afterwards.)
Now the only places handshake_func is set are in SSL_set_{connect,accept}_state
and the method switches.
Change-Id: Ib249212bf4aa889b94c35965a62ca06bdbcf52e1
Reviewed-on: https://boringssl-review.googlesource.com/2432
Reviewed-by: Adam Langley <agl@google.com>
When not offering to resume a session, the client populates s->session with a
fresh SSL_SESSION before the ServerHello is processed and, in DTLS_ANY_VERSION,
before the version is even determined. Don't create a fresh SSL_SESSION until
we know we are doing a full handshake.
This brings ssl3_send_client_hello closer to ssl23_client_hello in behavior. It
also fixes ssl_version in the client in DTLS_ANY_VERSION.
SSLv23_client_method is largely unchanged. If no session is offered, s->session
continues to be NULL until the ServerHello is received. The one difference is
that s->session isn't populated until the entire ServerHello is received,
rather than just the first half, in the case of a fragmented ServerHello. Apart
from info_callback, no external hooks get called between those points, so this
shouldn't expose new missing NULL checks.
The other client methods change significantly to match SSLv23_client_method's
behavior. For TLS, any exposed missing NULL checks are also in
SSLv23_client_method (and version-specific methods are already weird), so that
should be safe. For DTLS, I've verified that accesses in d1_*.c either handle
NULL or are after the ServerHello.
Change-Id: Idcae6bd242480e28a57dbba76ce67f1ac1ae1d1d
Reviewed-on: https://boringssl-review.googlesource.com/2404
Reviewed-by: Adam Langley <agl@google.com>
This fixes bugs that kept the tests from working:
- Resolve DTLS version and cookie before the session.
- In DTLS_ANY_VERSION, ServerHello should be read with first_packet = 1. This
is a regression from f2fedefdca. We'll want to
do the same for TLS, but first let's change this to a boolean has_version in a
follow-up.
Things not yet fixed:
- DTLS code is not EVP_AEAD-aware. Those ciphers are disabled for now.
- On the client, DTLS_ANY_VERSION creates SSL_SESSIONs with the wrong
ssl_version. The tests pass because we no longer enforce the match as of
e37216f56009fbf48c3a1e733b7a546ca6dfc2af. (In fact, we've gone from the server
ignoring ssl_version and client enforcing to the client mostly ignoring
ssl_version and the server enforcing.)
- ssl3_send_client_hello's ssl_version check checks for equality against
s->version rather than >.
Change-Id: I5a0dde221b2009413df9b9443882b9bf3b29519c
Reviewed-on: https://boringssl-review.googlesource.com/2403
Reviewed-by: Adam Langley <agl@google.com>
This is a bit of cleanup that probably should have been done at the same time
as 30ddb434bf.
For now, version negotiation is implemented with a method swap. It also
performs this swap on SSL_set_session, but this was neutered in
30ddb434bf. Rather than hackishly neuter it,
remove it outright. In addition, remove SSL_set_ssl_method. Now all method
swaps are internal: SSLv23_method switch to a version-specific method and
SSL_clear undoing it.
Note that this does change behavior: if an SSL* is created with one
version-specific method and we SSL_set_session to a session from a /different/
version, we would switch to the /other/ version-specific method. This is
extremely confusing, so it's unlikely anyone was actually expecting it.
Version-specific methods in general don't work well.
Change-Id: I72a5c1f321ca9aeb1b52ebe0317072950ba25092
Reviewed-on: https://boringssl-review.googlesource.com/2390
Reviewed-by: Adam Langley <agl@google.com>
This is only used for EAP-FAST which we apparently don't need to support.
Remove it outright. We broke it in 9eaeef81fa by
failing to account for session misses.
If this changes and we need it later, we can resurrect it. Preferably
implemented differently: the current implementation is bolted badly onto the
handshake. Ideally use the supplied callbacks to fabricate an appropriate
SSL_SESSION and resume that with as much of the normal session ticket flow as
possible.
The one difference is that EAP-FAST seems to require the probing mechanism for
session tickets rather than the sane session ID echoing version. We can
reimplement that by asking the record layer to probe ahead for one byte.
Change-Id: I38304953cc36b2020611556a91e8ac091691edac
Reviewed-on: https://boringssl-review.googlesource.com/2360
Reviewed-by: Adam Langley <agl@google.com>
This commit fixes a number of crashes caused by malloc failures. They
were found using the -malloc-test=0 option to runner.go which runs tests
many times, causing a different allocation call to fail in each case.
(This test only works on Linux and only looks for crashes caused by
allocation failures, not memory leaks or other errors.)
This is not the complete set of crashes! More can be found by collecting
core dumps from running with -malloc-test=0.
Change-Id: Ia61d19f51e373bccb7bc604642c51e043a74bd83
Reviewed-on: https://boringssl-review.googlesource.com/2320
Reviewed-by: Adam Langley <agl@google.com>
tls1_process_sigalgs now only determines the intersection between the peer
algorithms and those configured locally. That list is queried later to
determine the hash algorithm to use when signing CertificateVerify or
ServerKeyExchange.
This is needed to support client auth on Windows where smartcards or CAPI may
not support all hash functions.
As a bonus, this does away with more connection-global state. This avoids the
current situation where digests are chosen before keys are known (for
CertificateVerify) or for slots that don't exist.
Change-Id: Iec3619a103d691291d8ebe08ef77d574f2faf0e8
Reviewed-on: https://boringssl-review.googlesource.com/2280
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's new in OpenSSL 1.0.2 so it's never set by existing code. This removes gobs
and gobs of complexity from tls1_check_chain. It only checks the local
certificate, not the peer certificate. The uses appear to be:
- Sanity-check configuration. Not worth the complexity.
- Guide in selecting ciphers based on ClientHello parameters and which
certificates in the CERT_PKEY are compatible. This isn't very useful one its
own since the CERT_PKEY array only stores one slot per type (e.g. you cannot
configure RSA/SHA-1 and RSA/SHA-256).
- For the (currently removed) SSL_check_chain to return more information based
on ClientHello parameters and guide selecting a certificate. This is
potentially useful but, as noted in the commit which removed it, redundant
with ssl_early_callback_ctx.
This CL is largely mechanical removing of dead codepaths. The follow-up will
clean up the now unnecessary parts of this function.
Change-Id: I2ebfa17e4f73e59aa1ee9e4ae7f615af2c6cf590
Reviewed-on: https://boringssl-review.googlesource.com/2285
Reviewed-by: Adam Langley <agl@google.com>
Both of these are newly-exported in OpenSSL 1.0.2, so they cannot be used by
current consumers.
This was added in upstream's 18d7158809c9722f4c6d2a8af7513577274f9b56 to
support custom selection of certificates. The intent seems to be that you
listen to cert_cb and use SSL_check_chain to lean on OpenSSL to process
signature algorithms list for you.
Unfortunately, the implementation is slightly suspect: it uses the same
function as the codepath which mutates and refers to the CERT_PKEY of the
matching type. Some access was guarded by check_flags, but this is too
complex. Part of it is also because the matching digest is selected early and
we intend to connect this to EVP_PKEY_supports_digest so it is no longer a
property of just the key type.
Let's remove the hook for now, to unblock removing a lot of complexity. After
cleaning up this area, a function like this could be cleaner to support, but
we already have a version of this: select_certificate_cb and
ssl_early_callback_ctx.
Change-Id: I3add425b3996e5e32d4a88e14cc607b4fdaa5aec
Reviewed-on: https://boringssl-review.googlesource.com/2283
Reviewed-by: Adam Langley <agl@google.com>
All of NSS, upstream OpenSSL, SChannel, and Secure Transport require, on the
client, that the ServerHello version match the session's version on resumption.
OpenSSL's current behavior is incompatible with all of these. Fall back to a
full handshake on the server instead of mismatch.
Add a comment on the client for why we are, as of
30ddb434bf, not currently enforcing the same in
the client.
Change-Id: I60aec972d81368c4ec30e2fd515dabd69401d175
Reviewed-on: https://boringssl-review.googlesource.com/2244
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>
If psk_len were 0, it would already have been an error earlier. The PSK cipher
suites don't lose the other_secret || psk construction if the PSK happens to be
empty.
Change-Id: I1917236720d0862658562bc8f014cb827ee9aed5
Reviewed-on: https://boringssl-review.googlesource.com/2233
Reviewed-by: Adam Langley <agl@google.com>
Server-side support was removed in 77a942b7fe,
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>
Check the return value while we're here. This avoids some arithmetic and
appease scan-build's dead assignment flagger.
Change-Id: If3615076e091eb44b9e3e9d50cd64f80e645337e
Reviewed-on: https://boringssl-review.googlesource.com/2204
Reviewed-by: Adam Langley <agl@google.com>
Minor change, but they're the users of the old API left within
BoringSSL.
Change-Id: Ic24e0d006c97fa5265abc3373d3f98aa8d2f8b1e
Reviewed-on: https://boringssl-review.googlesource.com/2100
Reviewed-by: Adam Langley <agl@google.com>
Like ssl3_get_client_key_exchange, it is split into three parts:
- If PSK, query the PSK and write out the PSK identity.
- Compute the base pre-master secret.
- If PSK, compute the final pre-master secret.
This also fixes some double-frees on malloc failures in the ECDHE case. And it
avoids using the handshake output buffer to start the premaster secret.
Change-Id: I8631ee33c1e9c19604b3dcce2c676c83893c308d
Reviewed-on: https://boringssl-review.googlesource.com/2062
Reviewed-by: Adam Langley <agl@google.com>
The current implementation switches the order of other_secret and psk;
other_secret is first. Fix it and rewrite with CBB instead. The server half got
fixed on accident in a prior refactor.
Change-Id: Ib52a756aadd66e4bf22c66794447f71f4772da09
Reviewed-on: https://boringssl-review.googlesource.com/2052
Reviewed-by: Adam Langley <agl@google.com>
Remove one more difference to worry about switching between TLS and SSLv3
method tables.
Although this does change the get_ssl_method hook for the version-specific
tables (before TLS and SSLv3 would be somewhat partitioned), it does not appear
to do anything. get_ssl_method is only ever called in SSL_set_session for
client session resumption. Either you're using the version-specific method
tables and don't know about other versions anyway or you're using SSLv23 and
don't partition TLS vs SSL3 anyway.
BUG=chromium:403378
Change-Id: I8cbdf02847653a01b04dbbcaf61fcb3fa4753a99
Reviewed-on: https://boringssl-review.googlesource.com/1842
Reviewed-by: Adam Langley <agl@google.com>
The TLS-specific hooks have been removed. We aim to no longer perform version
negotiation as a pre-processing step, so ensure the only differences to worry
about are the version, get_method hook, and the enc_data.
BUG=chromium:403378
Change-Id: I628ec6f4c50ceed01d7af8f4110b6dc95cfbe023
Reviewed-on: https://boringssl-review.googlesource.com/1841
Reviewed-by: Adam Langley <agl@google.com>
Configures the SSL stack to log session information to a BIO. The intent is to
support NSS's SSLKEYLOGFILE environment variable. Add support for the same
environment variable to tool/client.cc.
Tested against Wireshark 1.12.0.
BUG=393477
Change-Id: I4c231f9abebf194eb2df4aaeeafa337516774c95
Reviewed-on: https://boringssl-review.googlesource.com/1699
Reviewed-by: Adam Langley <agl@google.com>
This check got refactored in OpenSSL 1.0.2 and broke in the process. Fix this
and add a test. Otherwise things like client auth can get slightly confused; it
will try to sign the MD5/SHA-1 hash, but the TLS 1.2 cipher suite may not use
SSL_HANDSHAKE_MAC_DEFAULT, so those digests won't be available.
Based on upstream's 226751ae4a1f3e00021c43399d7bb51a99c22c17.
Change-Id: I5b864d3a696f3187b849c53b872c24fb7df27924
Reviewed-on: https://boringssl-review.googlesource.com/1696
Reviewed-by: Adam Langley <agl@google.com>
Thanks to Denis Denisov for running the analysis.
Change-Id: I80810261e013423e746fd8d8afefb3581cffccc0
Reviewed-on: https://boringssl-review.googlesource.com/1701
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>
This moves CertificateVerify digest processing to the new
SSL_GET_MESSAGE_DONT_HASH_MESSAGE flag. It also refactors it similarly to
ssl3_send_cert_verify and moves that logic to a common ssl3_cert_verify_hash
function to compute the handshake hash.
This removes a large chunk of duplicate (and divergent!) logic between TLS and
DTLS. It also removes TLS1_FLAGS_KEEP_HANDSHAKE.
Change-Id: Ia63c94f7d76d901bc9c4c33454fbfede411adf63
Reviewed-on: https://boringssl-review.googlesource.com/1633
Reviewed-by: Adam Langley <agl@google.com>
This replaces the special-case in ssl3_get_message for Channel ID. Also add
ssl3_hash_current_message to hash the current message, taking TLS vs DTLS
handshake header size into account.
One subtlety with this flag is that a message intended to be processed with
SSL_GET_MESSAGE_DONT_HASH_MESSAGE cannot follow an optional message
(reprocessed with reuse_message, etc.). There is an assertion to that effect.
If need be, we can loosen it to requiring that the preceeding optional message
also pass SSL_GET_MESSAGE_DONT_HASH_MESSAGE and then maintain some state to
perform the more accurate assertion, but this is sufficient for now.
Change-Id: If8c87342b291ac041a35885b9b5ee961aee86eab
Reviewed-on: https://boringssl-review.googlesource.com/1630
Reviewed-by: Adam Langley <agl@google.com>
Remove all the logic managing key types that aren't being used anymore.
Change-Id: I101369164588048e64ba1c84a6b8aac8f3a221cd
Reviewed-on: https://boringssl-review.googlesource.com/1567
Reviewed-by: Adam Langley <agl@google.com>
DSA is not connected up to EVP, so it wouldn't work anyway. We shouldn't
advertise a cipher suite we don't support. Chrome UMA data says virtually no
handshakes end up negotiating one of these.
Change-Id: I874d934432da6318f05782ebd149432c1d1e5275
Reviewed-on: https://boringssl-review.googlesource.com/1566
Reviewed-by: Adam Langley <agl@google.com>
These are the variants where the CA signs a Diffie-Hellman keypair. They are
not supported by Chrome on NSS.
Change-Id: I569a7ac58454bd3ed1cd5292d1f98499012cdf01
Reviewed-on: https://boringssl-review.googlesource.com/1564
Reviewed-by: Adam Langley <agl@google.com>
In the fixed_ecdh case, it wasn't even implemented, but there was stub code for
it. It complicates the ClientKeyExchange (the client parameters become implicit
in the certificate) and isn't used.
Change-Id: I3627a37042539c90e05e59cd0cb3cd6c56225561
Reviewed-on: https://boringssl-review.googlesource.com/1563
Reviewed-by: Adam Langley <agl@google.com>
Just use the normal API for them.
Change-Id: Ibb5988611a86e8d39abda1e02087523d98defb51
Reviewed-on: https://boringssl-review.googlesource.com/1555
Reviewed-by: Adam Langley <agl@google.com>
Rather than switching the order of the ServerHello and HelloVerifyRequest
states and processing each twice, have the states follow the protocol order.
HelloVerifyRequest reading is optional and ServerHello is strict. Use the
send_cookie bit to determine whether we're expecting a cookie or not.
Fix the dtls1_stop_timer call in these states to consistently hit the end of a
server flight; the previous flight should not be cleared from the retransmit
buffer until the entire next flight is received. That said, OpenSSL doesn't
appear to implement the part where, on receipt of the previous peer flight, the
buffered flight is retransmitted. (With the exception of a SSL3_MT_FINISHED
special-case in dtls1_read_bytes.) So if the peer is also OpenSSL, this doesn't
do anything.
Also fix the DTLS test which wasn't actually asserting that the ClientHello
matched.
Change-Id: Ia542190972dbffabb837d32c9d453a243caa90b2
Reviewed-on: https://boringssl-review.googlesource.com/1551
Reviewed-by: Adam Langley <agl@google.com>
This lets us put the SSL_CIPHER table in the data section. For type-checking,
make STACK_OF(SSL_CIPHER) cast everything to const SSL_CIPHER*.
Note that this will require some changes in consumers which weren't using a
const SSL_CIPHER *.
Change-Id: Iff734ac0e36f9e5c4a0f3c8411c7f727b820469c
Reviewed-on: https://boringssl-review.googlesource.com/1541
Reviewed-by: Adam Langley <agl@google.com>
It was added in OpenSSL 1.0.2, so nothing can be depending on it yet. If we
really want a Suite B profile, it seems better to generate a configuration for
the rest of the system rather than pepper the codebase with checks.
Change-Id: I1be3ebed0e87cbfe236ade4174dcf5bbc7e10dd5
Reviewed-on: https://boringssl-review.googlesource.com/1517
Reviewed-by: Adam Langley <agl@google.com>
https://crbug.com/353579
Align behavior with NSS and report SSL_R_BAD_DH_P_LENGTH error
when size of the server's dh group is less than 512 bits.
Change-Id: I09f1828482f40b2283f7c6a69425819379399815
Reviewed-on: https://boringssl-review.googlesource.com/1480
Reviewed-by: Adam Langley <agl@google.com>
ssl3_send_client_key_exchange were wrongly reported
by ssl3_send_client_certificate() and
ssl3_check_cert_and_algorithm()
Change-Id: I244d3d871b6b4f75a188fd386d52ffc4335d1f9b
Reviewed-on: https://boringssl-review.googlesource.com/1460
Reviewed-by: Adam Langley <agl@google.com>
(This change originally applied to 1.0.1. In the switch to 1.0.2, the
DTLS specific client processing was removed and now the s3_clnt.c
functions are used. This caused most of the patch to be moot. What
remains is still useful however. For the original patch, see the change
against 1.0.1: 88ae012c8092852f03c50f6461175271104b4c8a)
CVE-2014-3510
Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(Imported from upstream's 1d7d0ed9c21403d79d602b6c7d76fdecf5e737da)
Change-Id: I666f9c48d603f2366cab821ae446a57360c3026b
Reviewed-on: https://boringssl-review.googlesource.com/1439
Reviewed-by: Adam Langley <agl@google.com>
Avoid needing to manually increment the reference count and using the right
lock, both here and in Chromium.
Change-Id: If116ebc224cfb1c4711f7e2c06f1fd2c97af21dd
Reviewed-on: https://boringssl-review.googlesource.com/1415
Reviewed-by: Adam Langley <agl@google.com>
The code guarded by PKCS1_CHECK appears to be unhelpful, and the guard
is explicitly undefined in ssl_locl.h Remove both.
Change-Id: I3cd45a744a8f35b02181b1e48fd1ef11af5e6f4a
Reviewed-on: https://boringssl-review.googlesource.com/1383
Reviewed-by: Adam Langley <agl@google.com>
It's not built. The problem is worked around by the padding extension now.
Change-Id: If577efdae57d1bca4e0a626486fc0502c3567ebb
Reviewed-on: https://boringssl-review.googlesource.com/1374
Reviewed-by: Adam Langley <agl@google.com>
One of the state transitions wasn't rewritten to CR_CHANGE. Add a test to
exercise this codepath. Also SSL_cutthrough_complete references the state.
Change-Id: Ib2f7ac5ac3f0348864efa93cf13cfd87454572f0
Reviewed-on: https://boringssl-review.googlesource.com/1337
Reviewed-by: Adam Langley <agl@google.com>
Now that the flag is set accurately, use it to enforce that the handshake and
CCS synchronization. If EXPECT_CCS is set, enforce that:
(a) No handshake records may be received before ChangeCipherSpec.
(b) There is no pending handshake data at the point EXPECT_CCS is set.
Change-Id: I04b228fe6a7a771cf6600b7d38aa762b2d553f08
Reviewed-on: https://boringssl-review.googlesource.com/1299
Reviewed-by: Adam Langley <agl@google.com>
Introduce a CR_CHANGE state just before entering CR_FINISHED_A. This replaces
the CCS_OK in the CR_FINISHED_A/CR_FINISHED_B case which otherwise would get
applied after partial reads of Finished. The other CCS_OK settings are
redundant with this one.
The copy in tls_secret_session_cb codepath is made unnecessary with
9eaeef81fa.
The copy in the normal session resumption case is unnecessary with
6444287806. Before that commit, OpenSSL would
potentially read Finished a state early. Now that we are strict (and get the
book-keeping correct) for expecting the NewSessionTicket message it too is
redundant.
Of particular note is the one after ssl3_send_finished. That was added in
response to upstream's PR#3400. I've reproduced the bug and concluded it was
actually a bug around expecting a NewSessionTicket message. That has been fixed
properly in 6444287806 by resetting
tlsext_expect_ticket on renegotiations.
Change-Id: I6a928386994fcd5efff26a5f0efb12b65bf7f299
Reviewed-on: https://boringssl-review.googlesource.com/1298
Reviewed-by: Adam Langley <agl@google.com>
Slightly cleaner; it means we can use CBS_stow.
Change-Id: I074aa2d73a79648013dea025ee531beeea2af4a2
Reviewed-on: https://boringssl-review.googlesource.com/1287
Reviewed-by: Adam Langley <agl@google.com>
Now the only case where temporary RSA keys are used on the server end is
non-signing keys.
Change-Id: I55f6c206e798dd28548c386fdffd555ccc395477
Reviewed-on: https://boringssl-review.googlesource.com/1285
Reviewed-by: Adam Langley <agl@google.com>
This removes support code for a "stream_mac" mode only used by GOST. Also get
rid of this
/* I should fix this up TLS TLS TLS TLS TLS XXXXXXXX */
comment next to it. It's not actually related to GOST (dates to OpenSSL initial
commit), but isn't especially helpful at this point.
Change-Id: Ib13c6e27e16e0d1fb59ed0142ddf913b9abc20b7
Reviewed-on: https://boringssl-review.googlesource.com/1281
Reviewed-by: Adam Langley <agl@google.com>
Without SSLv2, all cipher suite values are 2 bytes. Represent them as a
uint16_t and make all functions pass those around rather than pointers.
This removes SSL_CIPHER_find as it's unused.
Change-Id: Iea0b75abee4352a8333a4b8e39a161430ae55ea6
Reviewed-on: https://boringssl-review.googlesource.com/1259
Reviewed-by: Adam Langley <agl@google.com>
Per spec, the server sends it iff it sends the extension in ServerHello. There
is no need to probe for whether Finished is or isn't sent. NSS is strict about
this (wait_new_session_ticket never transitions to wait_change_cipher without a
NewSessionTicket message), so this is safe.
Reset tlsext_ticket_expected in ssl_scan_serverhello_tlsext to ensure state
from the initial handshake doesn't confuse renegotiation. This is another one
of those per-handshake states that should be systematically reset on each
handshake. For now, reset it properly at least.
Change-Id: I7d16439ce632b9abf42f62d5d8e1303cb6f0be1f
Reviewed-on: https://boringssl-review.googlesource.com/1296
Reviewed-by: Adam Langley <agl@google.com>
ssl3_get_new_session_ticket is sensible and fills in a session_id for stateless
sessions, so the resumption will already be detected at this point. Remove the
codepath in ssl3_client_hello which allows for resuming sessions with empty
session_ids. The rest of the code doesn't allow it either.
This removes another codepath where we potentially probe a Finished message
early.
Change-Id: I2749b5c65c7ce98c6f30566d8716360ff1bba24c
Reviewed-on: https://boringssl-review.googlesource.com/1295
Reviewed-by: Adam Langley <agl@google.com>
tls_session_secret_cb is used for EAP-FAST which computes the master secret
externally and enters the abbreviated handshake. It appears to only have been
working because ssl3_check_finished would drive it into the appropriate state
afterwards. That, in turn, only has been working because EAP-FAST misuses the
session ticket extension for some other field, so ssl3_check_finished isn't a
no-op.
Instead, set s->hit so it follows the abbreviated state machine directly.
If we ever build wpa_supplicant with BoringSSL, this will require some testing.
(And, if not, this API should be removed.)
Change-Id: Ie2992a9bba049f7120522b996f739906e38a070e
Reviewed-on: https://boringssl-review.googlesource.com/1294
Reviewed-by: Adam Langley <agl@google.com>
Android never did this - they patched out the point in the code that set
the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag when doing False Start.
Also, from the unittests it appears that NSS doesn't do this either.
Thus this change brings BoringSSL into line with existing behaviour.
SSL3_FLAGS_DELAY_CLIENT_FINISHED wasn't introduced with False Start,
it's an option in vanilla OpenSSL. But I can't find anything that uses
it and, since it's going to be untested, I've removed it completely in
this change.
Change-Id: I910537bfa35e74ab88778b83612cf5607d485969
Reviewed-on: https://boringssl-review.googlesource.com/1221
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
Got one of the conditions flipped.
Change-Id: I327a9c13e42865459e8d69a431b0d3a2bc6b54a5
Reviewed-on: https://boringssl-review.googlesource.com/1210
Reviewed-by: Adam Langley <agl@google.com>
Also fix some DTLS cookie bugs. rcvd_cookie is never referenced after being
saved (and the length isn't saved, so it couldn't be used anyway), and the
cookie verification failed to check the length.
For convenience, add a CBS_mem_equal helper function. Saves a bit of
repetition.
Change-Id: I187137733b069f0ac8d8b1bf151eeb80d388b971
Reviewed-on: https://boringssl-review.googlesource.com/1174
Reviewed-by: Adam Langley <agl@google.com>
This avoids duplicating the code to build the final premaster in PSK and
ECDHE_PSK. It also ports it to CBB for an initial trial of the API. Computing
the premaster secret now proceeds in four steps:
1. If a PSK key exchange (alg_a), look up the pre-shared key.
2. Compute the premaster secret based on alg_k. If PSK, it's all zeros.
3. If a PSK key exchange (alg_a), wrap the premaster in a struct with the
pre-shared key.
4. Use the possibly modified premaster to compute the master secret.
Change-Id: Ib511dd2724cbed42c82b82a676f641114cec5470
Reviewed-on: https://boringssl-review.googlesource.com/1173
Reviewed-by: Adam Langley <agl@google.com>
More consistent with ssl3_send_server_key_exchange and the message name.
Change-Id: If0f435a89bdf117297d349099708fff0bd5a6e98
Reviewed-on: https://boringssl-review.googlesource.com/1170
Reviewed-by: Adam Langley <agl@google.com>
This avoids having to do the CBS_skip dance and is better about returning the
right alert.
Change-Id: Id84eba307d7c67269ccbc07a38d9044b6f4f7c6c
Reviewed-on: https://boringssl-review.googlesource.com/1169
Reviewed-by: Adam Langley <agl@google.com>
Also tidy up some variable names and update RSA_verify call for it no longer
returning -1. Add CBS helper functions for dealing with C strings.
Change-Id: Ibc398d27714744f5d99d4f94ae38210cbc89471a
Reviewed-on: https://boringssl-review.googlesource.com/1164
Reviewed-by: Adam Langley <agl@google.com>
It's current a void* and gets explicitly cast everywhere. Make it a uint8_t and
only add the casts when converting it come init_buf, which internally stores a
char*.
Change-Id: I28bed129e46ed37ee1ce378d5c3bd0738fc1177f
Reviewed-on: https://boringssl-review.googlesource.com/1163
Reviewed-by: Adam Langley <agl@google.com>
Missing ServerKeyExchange is handled, but only because it hits an
ERR_R_INTERNAL_ERROR in ssl3_send_client_key_exchange in trying to find the
server ECDH parameters. Be strict about requiring it for ECDHE.
Change-Id: Ifce5b73c8bd14746b8a2185f479d550e9e3f84df
Reviewed-on: https://boringssl-review.googlesource.com/1157
Reviewed-by: Adam Langley <agl@google.com>
Introduce a ssl_cipher_has_server_public_key to save the repeated
NULL/PSK/RSA_PSK[*] check. Don't allow skipping to ServerKeyExchange when
expecting Certificate; the messages expected are determined by the cipher
suite. The ssl3_get_server_public_key call is already guarded.
As the previous test demonstrates, this is safe because of the
ssl3_check_cert_and_algorithm call, but avoid the looseness in the parsing
there.
[*] NB: we don't implement RSA_PSK, and OpenSSL has never implemented it.
Change-Id: I0571e6bcbeb8eb883f77878bdc98d1aa3a287cf3
Reviewed-on: https://boringssl-review.googlesource.com/1156
Reviewed-by: Adam Langley <agl@google.com>
This drops the bits of logic that allowed Certificate messages to be optional
for a KRB5 cipher suite.
Change-Id: I2a71b7c13d7e76f4f5542d4074169f80f3617240
Reviewed-on: https://boringssl-review.googlesource.com/1154
Reviewed-by: Adam Langley <agl@google.com>
This can't happen because we don't implement RSA_PSK, but we probably should
check here.
Probably |sess_cert| shouldn't be attached to SSL_SESSION anyway; it's only
relevant when initializing the session and if it's accessed afterwards, it'll
be shared and cause problems.
Change-Id: Id868e523195f33c22e057f9b89dc02fe68e9b554
Reviewed-on: https://boringssl-review.googlesource.com/1153
Reviewed-by: Adam Langley <agl@google.com>
Fixes bug introduced in c26c802a89. Only one of
the two halves got flipped.
Change-Id: I0b3905ab22b0f83f093e1720af85594b1a970a7f
Reviewed-on: https://boringssl-review.googlesource.com/1152
Reviewed-by: Adam Langley <agl@google.com>
Instead of, in the pre-TLS-1.2 case, reaching into the EVP and manually
signing, compute the digest separately from signing. Then use EVP_PKEY_sign.
This will make it easier to implement https://crbug.com/347404 by having only
one signing codepath as well as make that logic simpler.
Also add a bounds check while we're here, although the buffer is too large to
actually matter.
runner.go client auth tests should cover code changes.
Change-Id: I7d87181bbcc5a761660412452e508d24c4725327
Reviewed-on: https://boringssl-review.googlesource.com/1122
Reviewed-by: Adam Langley <agl@google.com>
This is the first of reorganizing state between connection state and handshake
state. The existing set are retained in cert_st for the server; they are server
configuration. The client gets a copy in s->s3->tmp alongside other handshake
state.
With other handshake state moved there, hopefully we can reset that state in
one go and possibly not even maintain it when there is no handshake in
progress. Rather than currently where we sometimes confused connection state
and handshake state and have to reset as appropriate on renegotiate.
While I'm here, document the fields and name them something more useful than
'ctypes'.
Change-Id: Ib927579f0004fc5c6854fce2127625df669b2b6d
Reviewed-on: https://boringssl-review.googlesource.com/1113
Reviewed-by: Adam Langley <agl@google.com>
Along the way, clean up the certificate types code to not have the
hard-coded fixed-size array.
Change-Id: If3e5978f7c5099478a3dfa37a0a7059072f5454a
Reviewed-on: https://boringssl-review.googlesource.com/1103
Reviewed-by: Adam Langley <agl@google.com>
SSL_OP_NETSCAPE_CA_DN_BUG is not included in SSL_OP_ALL.
Change-Id: I1635ad2721ed2742b1dff189d68bfc67a1c840a6
Reviewed-on: https://boringssl-review.googlesource.com/1102
Reviewed-by: Adam Langley <agl@google.com>
Building without RSA support is unreasonable. Changes were made by
running
find . -type f -name *.c | xargs unifdef -m -U OPENSSL_NO_RSA
find . -type f -name *.h | xargs unifdef -m -U OPENSSL_NO_RSA
using unifdef 2.10 and some newlines were removed manually.
Change-Id: Iea559e2d4b3d1053f28a4a9cc2f7a3d1f6cabd61
Reviewed-on: https://boringssl-review.googlesource.com/1095
Reviewed-by: Adam Langley <agl@google.com>
Found no users of the functions which control the feature. (Also I don't
particularly want to port all of that to CBS...)
Change-Id: I55da42c44d57252bd47bdcb30431be5e6e90dc56
Reviewed-on: https://boringssl-review.googlesource.com/1061
Reviewed-by: Adam Langley <agl@google.com>
This gives us systematic bounds-checking on all the parses. Also adds a
convenience function, CBS_memdup, for saving the current contents of a CBS.
Change-Id: I17dad74575f03121aee3f771037b8806ff99d0c3
Reviewed-on: https://boringssl-review.googlesource.com/1031
Reviewed-by: Adam Langley <agl@google.com>
Allow CCS after finished has been sent by client: at this point
keys have been correctly set up so it is OK to accept CCS from
server. Without this renegotiation can sometimes fail.
PR#3400
(Imported from upstream's 90d94ce39ecc2fad7fb2b8eb6bde0c669a65ee81)
If application uses tls_session_secret_cb for session resumption set the
CCS_OK flag.
(Imported from upstream's a21f350a76b34b66dcaf9c1676baec945f32e980)
Only accept change cipher spec when it is expected instead of at any
time. This prevents premature setting of session keys before the master
secret is determined which an attacker could use as a MITM attack.
Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for reporting this issue
and providing the initial fix this patch is based on.
(Imported from upstream's 77719aefb8f549ccc7f04222174889615d62057b)
Fix a bug in handling of 128 byte long PSK identity in
psk_client_callback.
OpenSSL supports PSK identities of up to (and including) 128 bytes in
length. PSK identity is obtained via the psk_client_callback,
implementors of which are expected to provide a NULL-terminated
identity. However, the callback is invoked with only 128 bytes of
storage thus making it impossible to return a 128 byte long identity and
the required additional NULL byte.
This CL fixes the issue by passing in a 129 byte long buffer into the
psk_client_callback. As a safety precaution, this CL also zeroes out the
buffer before passing it into the callback, uses strnlen for obtaining
the length of the identity returned by the callback, and aborts the
handshake if the identity (without the NULL terminator) is longer than
128 bytes.
PSK identity hint can be stored in SSL_CTX and in SSL/SSL_SESSION,
similar to other TLS parameters, with the value in SSL/SSL_SESSION
taking precedence over the one in SSL_CTX. The value in SSL_CTX is
shared (used as the default) between all SSL instances associated
with that SSL_CTX, whereas the value in SSL/SSL_SESSION is confined
to that particular TLS/SSL connection/session.
The existing implementation of TLS-PSK does not correctly distinguish
between PSK identity hint in SSL_CTX and in SSL/SSL_SESSION. This
change fixes these issues:
1. SSL_use_psk_identity_hint does nothing and returns "success" when
the SSL object does not have an associated SSL_SESSION.
2. On the client, the hint in SSL_CTX (which is shared between
multiple SSL instances) is overwritten with the hint received from
server or reset to NULL if no hint was received.
3. On the client, psk_client_callback is invoked with the hint from
SSL_CTX rather than from current SSL/SSL_SESSION (i.e., the one
received from the server). Issue #2 above masks this issue.
4. On the server, the hint in SSL/SSL_SESSION is ignored and the hint
from SSL_CTX is sent to the client.
5. On the server, the hint in SSL/SSL_SESSION is reset to the one in
SSL_CTX after the ClientKeyExchange message step.
This change fixes the issues by:
* Adding storage for the hint in the SSL object. The idea being that
the hint in the associated SSL_SESSION takes precedence.
* Reading the hint during the handshake only from the associated
SSL_SESSION object.
* Initializing the hint in SSL object with the one from the SSL_CTX
object.
* Initializing the hint in SSL_SESSION object with the one from the
SSL object.
* Making SSL_use_psk_identity_hint and SSL_get_psk_identity_hint
set/get the hint to/from SSL_SESSION associated with the provided
SSL object, or, if no SSL_SESSION is available, set/get the hint
to/from the provided SSL object.
* Removing code which resets the hint during handshake.
Fix limit checks in ssl_add_clienthello_tlsext and
ssl_add_serverhello_tlsext.
Some of the limit checks reference p rather than ret. p is the original
buffer position, not the current one. Fix those and rename p to orig so
it's clearer.
(Called "cut through" for historical reasons in this patch.)
Enables SSL3+ clients to send application data immediately following the
Finished message even when negotiating full-handshakes. With this
patch, clients can negotiate SSL connections in 1-RTT even when
performing full-handshakes.
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta).
(This change contains substantial changes from the original and
effectively starts a new history.)
