We have need to normalize other versions during version negotiation, but
almost all will be post-negotiation. Hopefully later this can be
replaced with a value explicitly stored on the object and we do away
with ssl->version.
Change-Id: I595db9163d0af2e7c083b9a09310179aaa9ac812
Reviewed-on: https://boringssl-review.googlesource.com/6841
Reviewed-by: Adam Langley <alangley@gmail.com>
The various SSL3_ENC_METHODs ought to be defined in the same file their
functions are defined in, so they can be static.
Change-Id: I34a1d3437e8e61d4d50f2be70312e4630ea89c19
Reviewed-on: https://boringssl-review.googlesource.com/6840
Reviewed-by: Adam Langley <alangley@gmail.com>
This is a companion to SSL_get_rc4_state and SSL_get_ivs which doesn't
require poking at internal state. Partly since it aligns with the
current code and partly the off chance we ever need to get
wpa_supplicant's EAP-FAST code working, the API allows one to generate
more key material than is actually in the key block.
Change-Id: I58bc3f2b017482dbb8567dcd0cd754947a95397f
Reviewed-on: https://boringssl-review.googlesource.com/6839
Reviewed-by: Adam Langley <alangley@gmail.com>
There's not much point in putting those in the interface as the
final_finished_mac implementation is itself different between SSL 3.0
and TLS.
Change-Id: I76528a88d255c451ae008f1a34e51c3cb57d3073
Reviewed-on: https://boringssl-review.googlesource.com/6838
Reviewed-by: Adam Langley <alangley@gmail.com>
As things stand now, they don't actually do anything.
Change-Id: I9f8b4cbf38a0dffabfc5265805c52bb8d7a8fb0d
Reviewed-on: https://boringssl-review.googlesource.com/6837
Reviewed-by: Adam Langley <alangley@gmail.com>
Mostly alg_k and alg_a variables had the wrong type.
Change-Id: I66ad4046b1f5a4e3e58bc407096d95870b42b9dd
Reviewed-on: https://boringssl-review.googlesource.com/6836
Reviewed-by: Adam Langley <alangley@gmail.com>
Both are connection state rather than configuration state. Notably this
cuts down more of SSL_clear that can't just use ssl_free + ssl_new.
Change-Id: I3c05b3ae86d4db8bd75f1cd21656f57fc5b55ca9
Reviewed-on: https://boringssl-review.googlesource.com/6835
Reviewed-by: Adam Langley <alangley@gmail.com>
It's the same between TLS and SSL 3.0. There's also no need for the
do_change_cipher_spec wrapper (it no longer needs checks to ensure it
isn't called at a bad place). Finally fold the setup_key_block call into
change_cipher_spec.
Change-Id: I7917f48e1a322f5fbafcf1dfb8ad53f66565c314
Reviewed-on: https://boringssl-review.googlesource.com/6834
Reviewed-by: Adam Langley <alangley@gmail.com>
Doing it at ChangeCipherSpec makes it be set twice and, more
importantly, causes us to touch SSL_SESSION objects on resumption. (With
a no-op change, but this still isn't a good idea.)
This should actually let us get rid of ssl->s3->tmp.new_cipher but some
of external code accesses that field directly.
Change-Id: Ia6b7e0964c1b430f963ad0b1a5417b339b7b19d3
Reviewed-on: https://boringssl-review.googlesource.com/6833
Reviewed-by: Adam Langley <alangley@gmail.com>
Move the actual SSL_AEAD_CTX swap into the record layer. Also revise the
intermediate state we store between setup_key_block and
change_cipher_state. With SSL_AEAD_CTX_new abstracted out, keeping the
EVP_AEAD around doesn't make much sense. Just store enough to partition
the key block.
Change-Id: I773fb46a2cb78fa570f00c0a89339c15bbb1d719
Reviewed-on: https://boringssl-review.googlesource.com/6832
Reviewed-by: Adam Langley <alangley@gmail.com>
wpa_supplicant needs to get at the client and server random. OpenSSL
1.1.0 added these APIs, so match their semantics.
Change-Id: I2b71ba850ac63e574c9ea79012d1d0efec5a979a
Reviewed-on: https://boringssl-review.googlesource.com/6830
Reviewed-by: Adam Langley <alangley@gmail.com>
This is a minor regression from
https://boringssl-review.googlesource.com/5235.
If the client, for whatever reason, had an ID-based session but also
supports tickets, it will send non-empty ID + empty ticket extension.
If the ticket extension is non-empty, then the ID is not an ID but a
dummy signaling value, so 5235 avoided looking it up. But if it is
present and empty, the ID is still an ID and should be looked up.
This shouldn't have any practical consequences, except if a server
switched from not supporting tickets and then started supporting it,
while keeping the session cache fixed.
Add a test for this case, and tighten up existing ID vs ticket tests so
they fail if we resume with the wrong type.
Change-Id: Id4d08cd809af00af30a2b67fe3a971078e404c75
Reviewed-on: https://boringssl-review.googlesource.com/6554
Reviewed-by: Adam Langley <alangley@gmail.com>
These symbols can show up in lists of large symbols but, so I
understand, these lists might not include the filename path. Thus |base|
as a symbol name is rather unhelpful.
This change renames the two precomputated tables to have slightly more
greppable names.
Change-Id: I77059250cfce4fa9eceb64e260b45db552b63255
Reviewed-on: https://boringssl-review.googlesource.com/6813
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <alangley@gmail.com>
rsa_default_encrypt allowed an RSA modulus 8 times larger than the
intended maximum size due to bits vs. bytes confusion.
Further, as |rsa_default_encrypt| got this wrong while
|rsa_default_verify_raw| got it right, factor out the duplicated logic
so that such inconsistencies are less likely to occur.
BUG=576856
Change-Id: Ic842fadcbb3b140d2ba4295793457af2b62d9444
Reviewed-on: https://boringssl-review.googlesource.com/6900
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
Some build systems don't like two targets with the same base name and
the curve25519 code had x25519-x86_64.[Sc].
Change-Id: If8382eb84996d7e75b34b28def57829d93019cff
Reviewed-on: https://boringssl-review.googlesource.com/6878
Reviewed-by: Adam Langley <agl@google.com>
Commit 2b0180c37fa6ffc48ee40caa831ca398b828e680 attempted to do this but
only hit one of many BN_mod_exp codepaths. Fix remaining variants and
add a test for each method.
Thanks to Hanno Boeck for reporting this issue.
(Imported from upstream's 44e4f5b04b43054571e278381662cebd3f3555e6.)
Change-Id: Ic691b354101c3e9c3565300836fb6d55c6f253ba
Reviewed-on: https://boringssl-review.googlesource.com/6820
Reviewed-by: Adam Langley <agl@google.com>
EVP_MAX_MD_SIZE is large enough to fit a MD5/SHA1 concatenation, and
necessarily is because EVP_md5_sha1 exists. This shaves 128 bytes of
per-connection state.
Change-Id: I848a8563dfcbac14735bb7b302263a638528f98e
Reviewed-on: https://boringssl-review.googlesource.com/6804
Reviewed-by: Adam Langley <agl@google.com>
That we're half and half is really confusing.
Change-Id: I1c2632682e8a3e63d01dada8e0eb3b735ff709ce
Reviewed-on: https://boringssl-review.googlesource.com/6785
Reviewed-by: Adam Langley <agl@google.com>
This unifies the ClientKeyExchange code rather nicely. ServerKeyExchange
is still pretty specialized. For simplicity, I've extended the yaSSL bug
workaround for clients as well as servers rather than route in a
boolean.
Chrome's already banished DHE to a fallback with intention to remove
altogether later, and the spec doesn't say anything useful about
ClientDiffieHellmanPublic encoding, so this is unlikely to cause
problems.
Change-Id: I0355cd1fd0fab5729e8812e4427dd689124f53a2
Reviewed-on: https://boringssl-review.googlesource.com/6784
Reviewed-by: Adam Langley <agl@google.com>
We don't actually have an API to let you know if the value is legal to
interpret as a curve ID. (This was kind of a poor API. Oh well.) Also add tests
for key_exchange_info. I've intentionally left server-side plain RSA missing
for now because the SSL_PRIVATE_KEY_METHOD abstraction only gives you bytes and
it's probably better to tweak this API instead.
(key_exchange_info also wasn't populated on the server, though due to a
rebasing error, that fix ended up in the parent CL. Oh well.)
Change-Id: I74a322c8ad03f25b02059da7568c9e1a78419069
Reviewed-on: https://boringssl-review.googlesource.com/6783
Reviewed-by: Adam Langley <agl@google.com>
The new curve is not enabled by default.
As EC_GROUP/EC_POINT is a bit too complex for X25519, this introduces an
SSL_ECDH_METHOD abstraction which wraps just the raw ECDH operation. It
also tidies up some of the curve code which kept converting back and
force between NIDs and curve IDs. Now everything transits as curve IDs
except for API entry points (SSL_set1_curves) which take NIDs. Those
convert immediately and act on curve IDs from then on.
Note that, like the Go implementation, this slightly tweaks the order of
operations. The client sees the server public key before sending its
own. To keep the abstraction simple, SSL_ECDH_METHOD expects to
generate a keypair before consuming the peer's public key. Instead, the
client handshake stashes the serialized peer public value and defers
parsing it until it comes time to send ClientKeyExchange. (This is
analogous to what it was doing before where it stashed the parsed peer
public value instead.)
It still uses TLS 1.2 terminology everywhere, but this abstraction should also
be compatible with TLS 1.3 which unifies (EC)DH-style key exchanges.
(Accordingly, this abstraction intentionally does not handle parsing the
ClientKeyExchange/ServerKeyExchange framing or attempt to handle asynchronous
plain RSA or the authentication bits.)
BUG=571231
Change-Id: Iba09dddee5bcdfeb2b70185308e8ab0632717932
Reviewed-on: https://boringssl-review.googlesource.com/6780
Reviewed-by: Adam Langley <agl@google.com>
clang-format keeps getting annoyed at it. Also remove some long-dead
constants.
Change-Id: I61e773f5be1e60ca28f1ea085e3afa7cb2c97b9e
Reviewed-on: https://boringssl-review.googlesource.com/6778
Reviewed-by: Adam Langley <agl@google.com>
This injects an interface to abstract between elliptic.Curve and a
byte-oriented curve25519. The C implementation will follow a similar
strategy.
Note that this slightly tweaks the order of operations. The client sees
the server public key before sending its own. To keep the abstraction
simple, ecdhCurve expects to generate a keypair before consuming the
peer's public key. Instead, the client handshake stashes the serialized
peer public value and defers parsing it until it comes time to send
ClientKeyExchange. (This is analogous to what it was doing before where
it stashed the parsed peer public value instead.)
BUG=571231
Change-Id: I771bb9aee0dd6903d395c84ec4f2dd7b3e366c75
Reviewed-on: https://boringssl-review.googlesource.com/6777
Reviewed-by: Adam Langley <agl@google.com>
Hopefully this can be replaced with a standard library version later.
BUG=571231
Change-Id: I61ae1d9d057c6d9e1b92128042109758beccc7ff
Reviewed-on: https://boringssl-review.googlesource.com/6776
Reviewed-by: Adam Langley <agl@google.com>
We don't live in a workspace, but relative import paths exist, so we
don't have to modify the modules we bundle to avoid naming collisions.
Change-Id: Ie7c70dbc4bb0485421814d40b6a6bd5f140e1d29
Reviewed-on: https://boringssl-review.googlesource.com/6781
Reviewed-by: Adam Langley <agl@google.com>
It already wasn't in the default list and no one enables it. Remove it
altogether. (It's also gone from the current TLS 1.3 draft.)
Change-Id: I143d07d390d186252204df6bdb8ffd22649f80e3
Reviewed-on: https://boringssl-review.googlesource.com/6775
Reviewed-by: Adam Langley <agl@google.com>
In doing so, make the asynchronous portion look more like
ssl3_send_server_key_exchange. This is a considerably simpler structure,
so the save/resume doesn't need any state.
Mostly this means writing out the signature algorithm can now go through
CBB rather than a uint8_t* without bounds check.
Change-Id: If99fcffd0d41a84514c3d23034062c582f1bccb2
Reviewed-on: https://boringssl-review.googlesource.com/6771
Reviewed-by: Adam Langley <agl@google.com>
The MSVC build is failing with:
ssl\s3_srvr.c(1363) : warning C4701: potentially uninitialized local variable 'digest_len' used
I don't believe that this warning is valid, but this change assigns a
value to |digest_len| to fix the build.
Change-Id: I20107a932bc16c880032cc1a57479b1a806aa8ea
Reviewed-on: https://boringssl-review.googlesource.com/6821
Reviewed-by: Adam Langley <agl@google.com>
There is some messiness around saving and restoring the CBB, but this is
still significantly clearer.
Note that the BUF_MEM_grow line is gone in favor of a fixed CBB like the
other functions ported thus far. This line was never necessary as
init_buf is initialized to 16k and none of our key exchanges get that
large. (The largest one can get is DHE_RSA. Even so, it'd take a roughly
30k-bit DH group with a 30k-bit RSA key.)
Having such limits and tight assumptions on init_buf's initial size is
poor (but on par for the old code which usually just blindly assumed the
message would not get too large) and the size of the certificate chain
is much less obviously bounded, so those BUF_MEM_grows can't easily go.
My current plan is convert everything but those which legitimately need
BUF_MEM_grow to CBB, then atomically convert the rest, remove init_buf,
and switch everything to non-fixed CBBs. This will hopefully also
simplify async resumption. In the meantime, having a story for
resumption means the future atomic change is smaller and, more
importantly, relieves some complexity budget in the ServerKeyExchange
code for adding Curve25519.
Change-Id: I1de6af9856caaed353453d92a502ba461a938fbd
Reviewed-on: https://boringssl-review.googlesource.com/6770
Reviewed-by: Adam Langley <agl@google.com>
Apple these days ships lldb without gdb. Teach runner how to launch it
too.
Change-Id: I25f845f84f1c87872a9e3bc4b7fe3e7344e8c1f7
Reviewed-on: https://boringssl-review.googlesource.com/6769
Reviewed-by: Adam Langley <agl@google.com>
Functions which take a BN_CTX also accept NULL. Allocating a BN_CTX is
only useful if doing multiple operations, which we aren't.
Change-Id: Ib31113f214707cce6283e090ded0bf93ae5e7c12
Reviewed-on: https://boringssl-review.googlesource.com/6768
Reviewed-by: Adam Langley <agl@google.com>
This relieves some complexity budget for adding Curve25519 to this
code.
This also adds a BN_bn2cbb_padded helper function since this seems to be a
fairly common need.
Change-Id: Ied0066fdaec9d02659abd6eb1a13f33502c9e198
Reviewed-on: https://boringssl-review.googlesource.com/6767
Reviewed-by: Adam Langley <agl@google.com>
This assembly is in gas syntax so is not built on Windows nor when
OPENSSL_SMALL is defined.
Change-Id: I1050cf1b16350fd4b758e4c463261b30a1b65390
Reviewed-on: https://boringssl-review.googlesource.com/6782
Reviewed-by: Adam Langley <agl@google.com>
This function may fail on malloc error.
Change-Id: I8631b1763dac5a3801fcaca81bdfcb8d24d3728c
Reviewed-on: https://boringssl-review.googlesource.com/6765
Reviewed-by: Adam Langley <agl@google.com>
These will be needed when we start writing variable-length things to a
CBB.
Change-Id: Ie7b9b140f5f875b43adedc8203ce9d3f4068dfea
Reviewed-on: https://boringssl-review.googlesource.com/6764
Reviewed-by: Adam Langley <agl@google.com>
A lot of commented-out code we haven't had to put them back, so these
can go now. Also remove the TODO about OAEP having a weird API. The API
is wrong, but upstream's shipped it with the wrong API, so that's what
it is now.
Change-Id: I7da607cf2d877cbede41ccdada31380f812f6dfa
Reviewed-on: https://boringssl-review.googlesource.com/6763
Reviewed-by: Adam Langley <agl@google.com>
There's a few that can't work since the types don't even exist.
Change-Id: Idf860b146439c95d33814d25bbc9b8f61774b569
Reviewed-on: https://boringssl-review.googlesource.com/6762
Reviewed-by: Adam Langley <agl@google.com>
There was a TODO to remove it once asn1_mac.h was trimmed. This has now
happened. Remove it and reset error codes for crypto/asn1.
Change-Id: Iaf2f3e75741914415372939471b135618910f95d
Reviewed-on: https://boringssl-review.googlesource.com/6761
Reviewed-by: Adam Langley <agl@google.com>
The function X509_verify_cert checks the value of |ctx->chain| at the
beginning, and if it is NULL then it initialises it, along with the value
of |ctx->untrusted|. The normal way to use X509_verify_cert() is to first
call X509_STORE_CTX_init(); then set up various parameters etc; then call
X509_verify_cert(); then check the results; and finally call
X509_STORE_CTX_cleanup(). The initial call to X509_STORE_CTX_init() sets
|ctx->chain| to NULL. The only place in the OpenSSL codebase where
|ctx->chain| is set to anything other than a non NULL value is in
X509_verify_cert itself. Therefore the only ways that |ctx->chain| could be
non NULL on entry to X509_verify_cert is if one of the following occurs:
1) An application calls X509_verify_cert() twice without re-initialising
in between.
2) An application reaches inside the X509_STORE_CTX structure and changes
the value of |ctx->chain| directly.
With regards to the second of these, we should discount this - it should
not be supported to allow this.
With regards to the first of these, the documentation is not exactly
crystal clear, but the implication is that you must call
X509_STORE_CTX_init() before each call to X509_verify_cert(). If you fail
to do this then, at best, the results would be undefined.
Calling X509_verify_cert() with |ctx->chain| set to a non NULL value is
likely to have unexpected results, and could be dangerous. This commit
changes the behaviour of X509_verify_cert() so that it causes an error if
|ctx->chain| is anything other than NULL (because this indicates that we
have not been initialised properly). It also clarifies the associated
documentation.
(Imported from upstream's 692f07c3e0c04180b56febc2feb57cd94395a7a2.)
Change-Id: I971f1a305f12bbf9f4ae955313d5557368f0d374
Reviewed-on: https://boringssl-review.googlesource.com/6760
Reviewed-by: Adam Langley <agl@google.com>
This check was fixed a while ago, but it could have been much simpler.
In the RSA key exchange, the expected size of the output is known, making the
padding check much simpler. There isn't any use in exporting the more general
RSA_message_index_PKCS1_type_2. (Without knowing the expected size, any
integrity check or swap to randomness or other mitigation is basically doomed
to fail.)
Verified with the valgrind uninitialized memory trick that we're still
constant-time.
Also update rsa.h to recommend against using the PKCS#1 v1.5 schemes.
Thanks to Ryan Sleevi for the suggestion.
Change-Id: I4328076b1d2e5e06617dd8907cdaa702635c2651
Reviewed-on: https://boringssl-review.googlesource.com/6613
Reviewed-by: Adam Langley <agl@google.com>
We should reject RSA public keys with exponents of less than 3.
This change also rejects even exponents, although the usefulness
of such a public key is somewhat questionable.
BUG=chromium:541257
Change-Id: I1499e9762ba40a7cf69155d21d55bc210cd6d273
Reviewed-on: https://boringssl-review.googlesource.com/6710
Reviewed-by: Adam Langley <agl@google.com>
