Commit Graph

5551 Commits

Author SHA1 Message Date
David Benjamin
6965d25602 Work around a JDK 11 TLS 1.3 bug.
JDK 11 shipped with a TLS 1.3 implementation enabled by default.
Unfortunately, that implementation does not work and fails to send the
SNI extension on resumption. See
https://bugs.openjdk.java.net/browse/JDK-8211806.

This means servers which enable TLS 1.3 will see JDK 11 clients work on
the first connection and then fail on all subsequent connections. Add
SSL_set_jdk11_workaround which configures a workaround to fingerprint
JDK 11 and disable TLS 1.3 with the faulty clients.

JDK 11 also implemented the downgrade signal, which means that
connections that trigger the workaround also must not send the downgrade
signal. Unfortunately, the downgrade signal's security properties are
sensitive to the existence of any unmarked TLS 1.2 ServerHello paths. To
salvage this, pick a new random downgrade marker for this scenario and
modify the client to treat it as an alias of the standard one.

Per the link above, JDK 11.0.2 will fix this bug. Hopefully the
workaround can be retired sometime after it is released.

Change-Id: I0627609a8cadf7cc214073eb7f1e880acdf613ef
Reviewed-on: https://boringssl-review.googlesource.com/c/33284
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-21 18:22:57 +00:00
David Benjamin
4f746a9073 Move ARM cpuinfo functions to the header.
ClusterFuzz folks want to switch to a shared library build, so call into
these another way. The new setup isn't quite ideal because the real code
builds as C and now tests as C++, but it should work.

Bug: chromium:907115
Change-Id: Ia1ffc18832739b09fee21b84ee5d181e61feaa15
Reviewed-on: https://boringssl-review.googlesource.com/c/33285
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-21 00:46:57 +00:00
Adam Langley
a3ba8b3289 Regenerate obj_dat.h
clang-format seems to have decided to format things differently now.
This will eliminate diff noise in the future when there are actual
changes.

Change-Id: I1f94cf0f0859023b6c926119f39bf0a587464e52
Reviewed-on: https://boringssl-review.googlesource.com/c/33266
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
2018-11-19 20:26:03 +00:00
Adam Langley
c65a1f4949 go fmt
Change-Id: I48a1e9e27013bb91b783949b65463208516bb3d2
Reviewed-on: https://boringssl-review.googlesource.com/c/33265
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
2018-11-19 20:20:01 +00:00
David Benjamin
293d9ee4e8 Support execute-only memory for AArch64 assembly.
Put data in .rodata and, rather than adr, use the combination of adrp :pg_hi21:
and add :lo12:. Unfortunately, iOS uses different syntax, so we must add more
transforms to arm-xlate.pl.

Tested manually by:

1. Use Android NDK r19-beta1

2. Follow usual instructions to configure CMake for aarch64, but pass
   -DCMAKE_EXE_LINKER_FLAGS="-fuse-ld=lld -Wl,-execute-only".

3. Build. Confirm with readelf -l tool/bssl that .text is not marked
   readable.

4. Push the test binaries onto a Pixel 3. Test normally and with
   --cpu={none,neon,crypto}. I had to pass --gtest_filter=-*Thread* to
   crypto_test. There appears to be an issue with some runtime function
   that's unrelated to our assembly.

No measurable performance difference.

Going forward, to support this, we will need to apply similar changes to
all other AArch64 assembly. This is relatively straightforward, but may
be a little finicky for dual-AArch32/AArch64 files (aesv8-armx.pl).

Update-Note: Assembly syntax is a mess. There's a decent chance some
assembler will get offend.

Change-Id: Ib59b921d4cce76584320fefd23e6bb7ebd4847eb
Reviewed-on: https://boringssl-review.googlesource.com/c/33245
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2018-11-19 19:58:15 +00:00
David Benjamin
4188c3f495 Remove cacheline striping in copy_from_prebuf.
The standard computation model for constant-time code is that memory
access patterns must be independent of secret data.
BN_mod_exp_mont_consttime was previously written to a slightly weaker
model: only cacheline access patterns must be independent of secret
data. It assumed accesses within a cacheline were indistinguishable.

The CacheBleed attack (https://eprint.iacr.org/2016/224.pdf) showed this
assumption was false. Cache lines may be divided into cache banks, and
the researchers were able to measure cache bank contention pre-Haswell.
For Haswell, the researchers note "But, as Haswell does show timing
variations that depend on low address bits [19], it may be vulnerable to
similar attacks."

OpenSSL's fix to CacheBleed was not to adopt the standard constant-time
computation model. Rather, it now assumes accesses within a 16-byte
cache bank are indistinguishable, at least in the C copy_from_prebuf
path. These weaker models failed before with CacheBleed, so avoiding
such assumptions seems prudent. (The [19] citation above notes a false
dependence between memory addresses with a distance of 4k, which may be
what the paper was referring to.) Moreover, the C path is largely unused
on x86_64 (which uses mont5 asm), so it is especially questionable for
the generic C code to make assumptions based on x86_64.

Just walk the entire table in the C implementation. Doing so as-is comes
with a performance hit, but the striped memory layout is, at that point,
useless. We regain the performance loss (and then some) by using a more
natural layout. Benchmarks below.

This CL does not touch the mont5 assembly; I haven't figured out what
it's doing yet.

Pixel 3, aarch64:
Before:
Did 3146 RSA 2048 signing operations in 10009070us (314.3 ops/sec)
Did 447 RSA 4096 signing operations in 10026666us (44.6 ops/sec)
After:
Did 3210 RSA 2048 signing operations in 10010712us (320.7 ops/sec)
Did 456 RSA 4096 signing operations in 10063543us (45.3 ops/sec)

Pixel 3, armv7:
Before:
Did 2688 RSA 2048 signing operations in 10002266us (268.7 ops/sec)
Did 459 RSA 4096 signing operations in 10004785us (45.9 ops/sec)
After:
Did 2709 RSA 2048 signing operations in 10001299us (270.9 ops/sec)
Did 459 RSA 4096 signing operations in 10063737us (45.6 ops/sec)

x86_64 Broadwell, mont5 assembly disabled:
(This configuration is not actually shipped anywhere, but seemed a
useful data point.)
Before:
Did 14274 RSA 2048 signing operations in 10009130us (1426.1 ops/sec)
Did 2448 RSA 4096 signing operations in 10046921us (243.7 ops/sec)
After:
Did 14706 RSA 2048 signing operations in 10037908us (1465.0 ops/sec)
Did 2538 RSA 4096 signing operations in 10059986us (252.3 ops/sec)

Change-Id: If41da911d4281433856a86c6c8eadf99cd33e2d8
Reviewed-on: https://boringssl-review.googlesource.com/c/33268
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
2018-11-19 19:10:09 +00:00
David Benjamin
5963bff237 Tidy up type signature of BN_mod_exp_mont_consttime table.
It's a table of BN_ULONGs. No particular need to use unsigned char.

Change-Id: I397883cef9f39fb162c2b0bfbd6a70fe399757a2
Reviewed-on: https://boringssl-review.googlesource.com/c/33267
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-19 17:44:44 +00:00
Andrii Shyshkalov
09f5a040d4 No longer set CQ-Verified label on CQ success/failure.
R=davidben@google.com

Bug: chromium:906576
Change-Id: I56b16a76fabe37822a1a7eb3f075a476f83818ea
Reviewed-on: https://boringssl-review.googlesource.com/c/33270
Reviewed-by: David Benjamin <davidben@google.com>
2018-11-19 16:59:05 +00:00
David Benjamin
46e12b03f9 Print a message when simulating CPUs.
Make it more obvious something is happening.

Change-Id: Ie68d1e96a9bedd4b572c1cc99910348f89f07624
Reviewed-on: https://boringssl-review.googlesource.com/c/33244
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-16 23:12:27 +00:00
David Benjamin
ce61710062 Move JSON test results code into a common module.
We can actually use modules now.

Change-Id: I0bd8abaf4e3318069f93fa17e89b4804d03944eb
Reviewed-on: https://boringssl-review.googlesource.com/c/33205
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-16 20:13:31 +00:00
Jesse Selover
f241a59dcc In 0RTT mode, reverify the server certificate before sending early data.
Bug: chromium:347402
Change-Id: I1442b595ed7296b9d9fe88357565f68e1ab80ffd
Reviewed-on: https://boringssl-review.googlesource.com/c/32644
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-16 19:52:18 +00:00
Junghoon Jang
e8ba1e3b21 Support assembly building for arm64e architecture.
iPhone XS/XS MAX/XR uses arm64e.

Change-Id: I89bd6b9307176c03fdc1a402ce6b8df080b00653
Reviewed-on: https://boringssl-review.googlesource.com/c/33224
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-16 01:43:53 +00:00
David Benjamin
6ce93ccb80 Simulate other ARM CPUs when running tests.
We test all Intel variants via SDE. For ARM, we can do the next best
thing and tweak with OPENSSL_armcap_P. If the host CPU does not support
the instructions we wish to test, skip it, but print something so we
know whether we need a more featureful test device.

Also fix the "CRASHED" status to "CRASH", to match
https://chromium.googlesource.com/chromium/src/+/master/docs/testing/json_test_results_format.md
(It's unclear if anything actually parses that JSON very carefully...)

Bug: 19
Change-Id: I811cc00a0d210a454287ac79c06f18fbc54f96dd
Reviewed-on: https://boringssl-review.googlesource.com/c/33204
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-15 00:58:09 +00:00
Adam Langley
444c2e59fb Merge P-224 contract into serialisation.
Contraction was always and only done immediately prior to calling
|p224_felem_to_generic| so merge it into that function.

Change-Id: If4fb46c6305ba724dfff15e8362a094c599f3f2c
Reviewed-on: https://boringssl-review.googlesource.com/c/33165
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2018-11-14 23:47:13 +00:00
Adam Langley
549b9024d4 Contract P-224 elements before returning them.
cfd50c63 switched to using the add/dbl of p224_64.c, but the outputs
weren't contracted before being returned and could be out of range,
giving invalid results.

Change-Id: I3cc295c7ddbff43375770dbafe73b37a668e4e6b
Reviewed-on: https://boringssl-review.googlesource.com/c/33184
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
2018-11-14 22:38:12 +00:00
Steven Valdez
e6eef1ca16 Add post-handshake support for the QUIC API.
Change-Id: I4956efabfb33f7bd60a4743a922c29ee4de18935
Reviewed-on: https://boringssl-review.googlesource.com/c/33004
Commit-Queue: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
2018-11-14 18:54:36 +00:00
David Benjamin
ce45588695 Speculatively remove __STDC_*_MACROS.
C99 added macros such as PRIu64 to inttypes.h, but it said to exclude them from
C++ unless __STDC_FORMAT_MACROS or __STDC_CONSTANT_MACROS was defined. This
text was never incorporated into any C++ standard and explicitly overruled in
C++11.

Some libc headers followed C99. Notably, glibc prior to 2.18
(https://sourceware.org/bugzilla/show_bug.cgi?id=15366) and old versions of the
Android NDK.

In the NDK, although it was fixed some time ago (API level 20), the NDK used to
use separate headers per API level. Only applications using minSdkVersion >= 20
would get the fix. Starting NDK r14, "unified" headers are available which,
among other things, make the fix available (opt-in) independent of
minSdkVersion. In r15, unified headers are opt-out, and in r16 they are
mandatory.

Try removing these and see if anyone notices. The former is past our five year
watermark. The latter is not and Android has hit
https://boringssl-review.googlesource.com/c/boringssl/+/32686 before, but
unless it is really widespread, it's probably simpler to ask consumers to
define __STDC_CONSTANT_MACROS and __STDC_FORMAT_MACROS globally.

Update-Note: If you see compile failures relating to PRIu64, UINT64_MAX, and
friends, update your glibc or NDK. As a short-term fix, add
__STDC_CONSTANT_MACROS and __STDC_FORMAT_MACROS to your build, but get in touch
so we have a sense of how widespread it is.

Bug: 198
Change-Id: I56cca5f9acdff803de1748254bc45096e4c959c2
Reviewed-on: https://boringssl-review.googlesource.com/c/33146
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-14 16:14:37 +00:00
David Benjamin
5ecfb10d54 Modernize OPENSSL_COMPILE_ASSERT, part 2.
The change seems to have stuck, so bring us closer to C/++11 static asserts.

(If we later find we need to support worse toolchains, we can always use
__LINE__ or __COUNTER__ to avoid duplicate typedef names and just punt on
embedding the message into the type name.)

Change-Id: I0e5bb1106405066f07740728e19ebe13cae3e0ee
Reviewed-on: https://boringssl-review.googlesource.com/c/33145
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-14 16:06:37 +00:00
David Benjamin
73d69f4d51 Switch docs to recommending NASM.
Chromium has now switched to building our assembly with NASM
(https://crbug.com/766721), which is more maintained. Next step
is to switch remaining folks (Conscrypt, not sure if there's anyone
else) and we'll drop Yasm.

Change-Id: If4f45399b48d0d7477afb47647e83e7250bf854f
Reviewed-on: https://boringssl-review.googlesource.com/c/33144
Reviewed-by: Adam Langley <agl@google.com>
2018-11-14 16:00:42 +00:00
Adam Langley
9a547e17eb Mark the |e| argument to |RSA_generate_key_ex| as const.
The function does not take ownership of |e| and this makes that clear.

Change-Id: I53bb5fa94bec5d16d1c904b59391d36df7abbde6
Reviewed-on: https://boringssl-review.googlesource.com/c/33164
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-14 15:57:25 +00:00
David Benjamin
5279ef5769 Clean up EC_POINT to byte conversions.
With the allocations and BN_CTX gone, ECDH and point2oct are much, much
shorter.

Bug: 242
Change-Id: I3421822e94100f7eb2f5f2373df7fb3b3311365e
Reviewed-on: https://boringssl-review.googlesource.com/c/33071
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 17:27:59 +00:00
Adam Langley
c93ab63a53 Need cpu.h for |OPENSSL_ia32cap_P|.
(Otherwise the individual-file build breaks.)

Change-Id: Id3defd08cd2b49af1d8eb6890bd8454332c1aa1e
Reviewed-on: https://boringssl-review.googlesource.com/c/33124
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-13 17:15:39 +00:00
David Benjamin
c1c81613ce Rename EC_MAX_SCALAR_*.
These are used for field elements too.

Change-Id: I74e3dbcafdce34ad507f64a0718e0420b56b51ae
Reviewed-on: https://boringssl-review.googlesource.com/c/33070
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 03:22:04 +00:00
David Benjamin
9f152adfcf Use EC_RAW_POINT in ECDSA.
Now the only allocations in ECDSA are the ECDSA_SIG input and output.

Change-Id: If1fcde6dc2ee2c53f5adc16a7f692e22e9c238de
Reviewed-on: https://boringssl-review.googlesource.com/c/33069
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 02:06:46 +00:00
David Benjamin
8618f2bfe0 Optimize EC_GFp_mont_method's cmp_x_coordinate.
For simplicity, punt order > field or width mismatches. Analogous
optimizations are possible, but the generic path works fine and no
commonly-used curve looks hits those cases.

Before:
Did 5888 ECDSA P-384 verify operations in 3094535us (1902.7 ops/sec)
After [+6.7%]:
Did 6107 ECDSA P-384 verify operations in 3007515us (2030.6 ops/sec)

Also we can fill in p - order generically and avoid extra copies of some
constants.

Change-Id: I38e1b6d51b28ed4f8cb74697b00a4f0fbc5efc3c
Reviewed-on: https://boringssl-review.googlesource.com/c/33068
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 01:48:21 +00:00
David Benjamin
0b3f497bcd Optimize EC_GFp_nistp256_method's cmp_x_coordinate.
Before:
Did 35496 ECDSA P-256 verify operations in 10027999us (3539.7 ops/sec)
After [+6.9%]:
Did 38170 ECDSA P-256 verify operations in 10090160us (3782.9 ops/sec)

Change-Id: Ib272d19954f46d96efc2b6d5dd480b5b85a34523
Reviewed-on: https://boringssl-review.googlesource.com/c/33067
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
2018-11-13 00:52:18 +00:00
David Benjamin
4508745861 Remove unreachable code.
This is a remnant from just before
https://boringssl-review.googlesource.com/23074.

Change-Id: I3fded6107ac59f1129d040837da0c7cd109e7564
Reviewed-on: https://boringssl-review.googlesource.com/c/33106
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-12 23:34:36 +00:00
Adam Langley
2745ef9082 Also accept __ARM_NEON
The Clang used in the Android SDK, at least, defines both __ARM_NEON__
and __ARM_NEON for ARMv7, but only the latter for AArch64.

This change switches each use of __ARM_NEON__ to accept either.

Change-Id: I3b5d5badc9ff0210888fd456e9329dc53a2b9b09
Reviewed-on: https://boringssl-review.googlesource.com/c/33104
Commit-Queue: Adam Langley <alangley@gmail.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-12 22:12:08 +00:00
David Benjamin
76e441bd66 Remove some easy BN_CTXs.
Change-Id: Ie7ff03a2c5b2ae8f56816b02182df40ce7ca0065
Reviewed-on: https://boringssl-review.googlesource.com/c/33066
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
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2018-11-12 22:04:40 +00:00
David Benjamin
be11d6d8d7 Push BIGNUM out of the cmp_x_coordinate interface.
This removes the failure cases for cmp_x_coordinate, this clearing our
earlier dilemma.

Change-Id: I057f705e49b0fb5c3fc9616ee8962a3024097b24
Reviewed-on: https://boringssl-review.googlesource.com/c/33065
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-12 21:46:36 +00:00
David Benjamin
fa3aadcd40 Push BIGNUM out of EC_METHOD's affine coordinates hook.
This is in preparation for removing the BIGNUM from cmp_x_coordinate.

Change-Id: Id8394248e3019a4897c238289f039f436a13679d
Reviewed-on: https://boringssl-review.googlesource.com/c/33064
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-12 21:32:53 +00:00
David Benjamin
adeb72b353 Fix r = p-n+epsilon ECDSA tests.
I forgot to refresh the public key in those tests, so they weren't
actually testing what they were supposed to. With this fix, injecting
too larger of a P_MINUS_ORDER into p256-x86_64.c now breaks tests.

Change-Id: I5d10a85c84b09629448beef67c86de607525fc71
Reviewed-on: https://boringssl-review.googlesource.com/c/33044
Reviewed-by: Adam Langley <agl@google.com>
2018-11-12 16:34:45 +00:00
David Benjamin
f09df6930f Don't include openssl/ec_key.h under extern "C".
Reportedly some combination of C++ modules and old clang gets upset.
That seems an inadvisable combination, but including headers under
extern "C" is rude, so fix it.

Change-Id: I12f873e1be41697b67f2b1145387a3c6fc769c28
Reviewed-on: https://boringssl-review.googlesource.com/c/33024
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2018-11-09 19:33:34 +00:00
David Benjamin
7d10ab594c Abstract hs_buf a little.
Having to lazily create it is a little wordy, and we append to it in
three places now. V2ClientHello makes this slightly finicky, but I think
this is still clearer.

Change-Id: If931db0b56efd7f0728c0b7d119886864dd7933a
Reviewed-on: https://boringssl-review.googlesource.com/c/32824
Commit-Queue: Steven Valdez <svaldez@google.com>
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2018-11-09 19:01:04 +00:00
David Benjamin
4706ea728e Inline ec_GFp_simple_group_get_degree.
This function is not EC_METHOD-specific, nor is there any reason it
would be (we do not support GF2m).

Change-Id: I4896cd16a107ad6a99be445a0dc0896293e8c8f9
Reviewed-on: https://boringssl-review.googlesource.com/c/32884
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2018-11-08 23:56:02 +00:00
David Benjamin
fbec517255 Better test boundary cases of ec_cmp_x_coordinate.
This is done in preparation of generalizing the optimization to all our
EC_METHODs.

Wycheproof happily does cover the case where x needed a reduction, but
they don't appear to check x being just above or below n, only x = p - 1
(adjusted downwards). Also we can tailor the test vectors a bit to the
x == r*z^2 (mod p) strategy to make sure we don't mess that up.

Additionally, the scenario is different for n > p. There is also the
nuisance of EC_FELEM vs EC_SCALAR having different widths. All our
built-in curves are well-behaved (same width, and consistently p < n),
but secp160r1 is reachable from custom curves and violates both
properties. Generate some tests to cover it as well.

Change-Id: Iefa5ebfe689a81870be21f04f5962ab161d38dab
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2018-11-08 23:52:07 +00:00
Adam Langley
26b3fb0a77 Fix build when bcm.c is split up.
Some of the ec files now reference ECDSA_R_BAD_SIGNATURE. Instead, lift the
error-pushing to ecdsa.c.

Change-Id: Ice3e7a22c5099756599df0ab0b215c0752ada4ee
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2018-11-08 22:35:51 +00:00
Adam Langley
9edbc7ff9f Revert "Revert "Speed up ECDSA verify on x86-64.""
This reverts commit e907ed4c4b. CPUID
checks have been added so hopefully this time sticks.

Change-Id: I5e0e5b87427c1230132681f936b3c70bac8263b8
Reviewed-on: https://boringssl-review.googlesource.com/c/32924
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2018-11-07 23:57:22 +00:00
Steven Valdez
384d0eaf19 Make SSL_get_current_cipher valid during QUIC callbacks.
Update-Note: This effectively reverts https://boringssl-review.googlesource.com/4733,
which was an attempt at a well-defined story during renegotiation and pre-handshake.
This is a behavior change, though one that matches OpenSSL upstream. It is also more
consistent with other functions, such as SSL_get_curve_id. Renegotiation is now
opt-in, so this is less critical, and, if we change the behavior mid-renegotiation,
we should do it consistently to all getters.

Change-Id: Ica6b386fb7c5ac524395de6650642edd27cac36f
Reviewed-on: https://boringssl-review.googlesource.com/c/32904
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2018-11-06 19:04:48 +00:00
David Benjamin
ffbf95ad41 Devirtualize ec_simple_{add,dbl}.
Now that the tuned add/dbl implementations are exposed, these can be
specific to EC_GFp_mont_method and call the felem_mul and felem_sqr
implementations directly.

felem_sqr and felem_mul are still used elsewhere in simple.c, however,
so we cannot get rid of them yet.

Change-Id: I5ea22a8815279931afc98a6fc578bc85e3f8bdcc
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2018-11-06 18:32:11 +00:00
Matthew Braithwaite
6ec9e40b28 Refresh fuzzer corpora for changes to split-handshake serialization.
Change-Id: I7922b4b26dabb6875e800472ee8453ca4a9922e0
Reviewed-on: https://boringssl-review.googlesource.com/c/32845
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2018-11-06 01:19:38 +00:00
Matthew Braithwaite
c65eb2ceda Serialize SSL curve list in handoff and check it on application.
A split SSL handshake may involve 2 binaries, potentially built at
different versions: call them the "handoff/handback" binary and the
"handshake" binary.  We would like to guarantee that the
handoff/handback binary does not make any promises that the handshake
binary cannot keep.

d2ed382 serialized |kCiphers|; this commit extends the same approach
to |kNamedGroups|.

Change-Id: Idb13e54e9b189236309f6054a36872c5a4d96985
Reviewed-on: https://boringssl-review.googlesource.com/c/32825
Reviewed-by: David Benjamin <davidben@google.com>
2018-11-06 01:19:10 +00:00
Adam Langley
e907ed4c4b Revert "Speed up ECDSA verify on x86-64."
This reverts commit 3d450d2844. It fails
SDE, looks like a missing CPUID check before using vector instructions.

Change-Id: I6b7dd71d9e5b1f509d2e018bd8be38c973476b4e
Reviewed-on: https://boringssl-review.googlesource.com/c/32864
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Commit-Queue: Adam Langley <agl@google.com>
2018-11-06 00:29:15 +00:00
David Benjamin
cfd50c63a1 Route the tuned add/dbl implementations out of EC_METHOD.
Some consumer stumbled upon EC_POINT_{add,dbl} being faster with a
"custom" P-224 curve than the built-in one and made "custom" clones to
work around this. Before the EC_FELEM refactor, EC_GFp_nistp224_method
used BN_mod_mul for all reductions in fallback point arithmetic (we
primarily support the multiplication functions and keep the low-level
point arithmetic for legacy reasons) which took quite a performance hit.

EC_FELEM fixed this, but standalone felem_{mul,sqr} calls out of
nistp224 perform a lot of reductions, rather than batching them up as
that implementation is intended. So it is still slightly faster to use a
"custom" curve.

Custom curves are the last thing we want to encourage, so just route the
tuned implementations out of EC_METHOD to close this gap. Now the
built-in implementation is always solidly faster than (or identical to)
the custom clone.  This also reduces the number of places where we mix
up tuned vs. generic implementation, which gets us closer to making
EC_POINT's representation EC_METHOD-specific.

Change-Id: I843e1101a6208eaabb56d29d342e886e523c78b4
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2018-11-06 00:17:19 +00:00
Nir Drucker
3d450d2844 Speed up ECDSA verify on x86-64.
This commit improves the performance of ECDSA signature verification
(over NIST P-256 curve) for x86 platforms. The speedup is by a factor of 1.15x.
It does so by:
  1) Leveraging the fact that the verification does not need
     to run in constant time. To this end, we implemented:
    a) the function ecp_nistz256_points_mul_public in a similar way to
       the current ecp_nistz256_points_mul function by removing its constant
       time features.
    b) the Binary Extended Euclidean Algorithm (BEEU) in x86 assembly to
       replace the current modular inverse function used for the inversion.
  2) The last step in the ECDSA_verify function compares the (x) affine
     coordinate with the signature (r) value. Converting x from the Jacobian's
     representation to the affine coordinate requires to perform one inversions
     (x_affine = x * z^(-2)). We save this inversion and speed up the computations
     by instead bringing r to x (r_jacobian = r*z^2) which is faster.

The measured results are:
Before (on a Kaby Lake desktop with gcc-5):
Did 26000 ECDSA P-224 signing operations in 1002372us (25938.5 ops/sec)
Did 11000 ECDSA P-224 verify operations in 1043821us (10538.2 ops/sec)
Did 55000 ECDSA P-256 signing operations in 1017560us (54050.9 ops/sec)
Did 17000 ECDSA P-256 verify operations in 1051280us (16170.8 ops/sec)

After (on a Kaby Lake desktop with gcc-5):
Did 27000 ECDSA P-224 signing operations in 1011287us (26698.7 ops/sec)
Did 11640 ECDSA P-224 verify operations in 1076698us (10810.8 ops/sec)
Did 55000 ECDSA P-256 signing operations in 1016880us (54087.0 ops/sec)
Did 20000 ECDSA P-256 verify operations in 1038736us (19254.2 ops/sec)

Before (on a Skylake server platform with gcc-5):
Did 25000 ECDSA P-224 signing operations in 1021651us (24470.2 ops/sec)
Did 10373 ECDSA P-224 verify operations in 1046563us (9911.5 ops/sec)
Did 50000 ECDSA P-256 signing operations in 1002774us (49861.7 ops/sec)
Did 15000 ECDSA P-256 verify operations in 1006471us (14903.6 ops/sec)

After (on a Skylake server platform with gcc-5):
Did 25000 ECDSA P-224 signing operations in 1020958us (24486.8 ops/sec)
Did 10373 ECDSA P-224 verify operations in 1046359us (9913.4 ops/sec)
Did 50000 ECDSA P-256 signing operations in 1003996us (49801.0 ops/sec)
Did 18000 ECDSA P-256 verify operations in 1021604us (17619.4 ops/sec)

Developers and authors:
***************************************************************************
Nir Drucker (1,2), Shay Gueron (1,2)
(1) Amazon Web Services Inc.
(2) University of Haifa, Israel
***************************************************************************

Change-Id: Idd42a7bc40626bce974ea000b61fdb5bad33851c
Reviewed-on: https://boringssl-review.googlesource.com/c/31304
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2018-11-05 23:48:07 +00:00
Adam Langley
7f7e5e231e Include details about latest FIPS certification.
Change-Id: I84cda22a1086bce0da4797afae7975b3f39625de
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2018-11-05 19:03:25 +00:00
Matthew Braithwaite
d2ed382e64 Serialize SSL configuration in handoff and check it on application.
A split SSL handshake may involve 2 binaries, potentially built at
different versions: call them the "handoff/handback" binary and the
"handshake" binary.  We would like to guarantee that the
handoff/handback binary does not make any promises that the handshake
binary cannot keep.

As a start, this commit serializes |kCiphers| to the handoff message.
When the handoff message is applied to an |SSL|, any configured
ciphers not listed in the handoff message will be removed, in order to
prevent them from being negotiated.

Subsequent commits will apply the same approach to other lists of features.

Change-Id: Idf6dbeadb750c076ab0509c09b9d3f22eb162b9c
Reviewed-on: https://boringssl-review.googlesource.com/c/29264
Reviewed-by: Matt Braithwaite <mab@google.com>
2018-11-02 19:45:42 +00:00
David Benjamin
e62bf02a13 Don't overflow state->calls on 16TiB RAND_bytes calls.
This is an extremely important and practical use case. The comment that
state->calls is bounded by the reseed interval isn't quite true. We only
check on entry to the function, which means that it may exceed it by one
call's worth. Switch it to a size_t (which doesn't actually increase
memory because the struct was already padded).

Change-Id: Ia7646fd5b4142789c1d613280223baa4cd1a4a9b
Reviewed-on: https://boringssl-review.googlesource.com/c/32804
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2018-11-02 18:33:43 +00:00
David Benjamin
cc9d935256 Buffer up QUIC data within a level internally.
Avoid forcing the QUIC implementation to buffer this when we already have code
to do it. This also avoids QUIC implementations relying on this hook being
called for each individual message.

Change-Id: If2d70f045a25da1aa2b10fdae262cae331da06b1
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2018-11-01 13:52:43 +00:00
Steven Valdez
c8e0f90f83 Add an interface for QUIC integration.
0-RTT support and APIs to consume NewSessionTicket will be added in a
follow-up.

Change-Id: Ib2b2c6b618b3e33a74355fb53fdbd2ffafcc5c56
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2018-10-31 20:38:10 +00:00