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>
The only PSK cipher suite that computes the shared secret early is PSK. Also
there were two (unreachable because of earlier checks) codepaths where we're
exit this function without a master secret.
Change-Id: I3b64fc007b83c4bc46ddb6e14382fb285d8095f9
Reviewed-on: https://boringssl-review.googlesource.com/1172
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 a little now that {RSA,ECDSA}_verify don't have two separate error
codes.
Change-Id: Id0e9248f63766771032a131fd96d86d2596ade32
Reviewed-on: https://boringssl-review.googlesource.com/1168
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>
NPNServerTest in runner.go provides test coverage.
Change-Id: I5503ccbc4270e7f9f42ebc30c21e8077a430cf9f
Reviewed-on: https://boringssl-review.googlesource.com/1162
Reviewed-by: Adam Langley <agl@google.com>
Server client certificate tests provide test coverage.
Change-Id: I272b8099675f2a747f3ca878327c5f0b6936a988
Reviewed-on: https://boringssl-review.googlesource.com/1160
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>
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>
dc9b141127 added a default case when importing
the patch but accidentally falls through all the time.
Change-Id: Ieb9beeb9e3ffcf77f2842841eda7d28a62fe8072
Reviewed-on: https://boringssl-review.googlesource.com/1073
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>
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)
Make sure there is an extra 4 bytes for server done message when
NETSCAPE_HANG_BUG is defined.
PR#3361
(Imported from upstream's 856a4585d6f7a856b90c93792cf1c1ed968d4a4b)
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.
This change implements equal-preference groups of cipher suites. This
allows, for example, a server to prefer one of AES-GCM or ChaCha20
ciphers, but to allow the client to pick which one. When coupled with
clients that will boost AES-GCM in their preferences when AES-NI is
present, this allows us to use AES-GCM when the hardware exists and
ChaCha20 otherwise.
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta).
(This change contains substantial changes from the original and
effectively starts a new history.)
