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David Benjamin 73df153be8 Make BN_generate_dsa_nonce internally constant-time.
This rewrites the internals with a "words" variant that can avoid
bn_correct_top. It still ultimately calls bn_correct_top as the calling
convention is sadly still BIGNUM, but we can lift that calling
convention out incrementally.

Performance seems to be comparable, if not faster.

Before:
Did 85000 ECDSA P-256 signing operations in 5030401us (16897.3 ops/sec)
Did 34278 ECDSA P-256 verify operations in 5048029us (6790.4 ops/sec)

After:
Did 85000 ECDSA P-256 signing operations in 5021057us (16928.7 ops/sec)
Did 34086 ECDSA P-256 verify operations in 5010416us (6803.0 ops/sec)

Change-Id: I1159746dfcc00726dc3f28396076a354556e6e7d
Reviewed-on: https://boringssl-review.googlesource.com/23065
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:18:30 +00:00
.github
crypto Make BN_generate_dsa_nonce internally constant-time. 2017-11-20 16:18:30 +00:00
decrepit Explicit fallthrough on switch 2017-09-20 19:58:25 +00:00
fipstools Have run_cavp.go create “resp” directories as needed. 2017-06-08 19:13:01 +00:00
fuzz Refresh TLS fuzzer corpora. 2017-11-11 06:34:10 +00:00
include/openssl Clarify the documentation for |BN_is_bit_set|. 2017-11-15 14:23:11 +00:00
infra/config Revert "Add new bots to the CQ." 2017-10-09 21:38:10 +00:00
ssl Add tests for post-handshake CCS in draft "22". 2017-11-14 05:40:38 +00:00
third_party change URL type in third_party METADATA files to GIT 2017-11-07 21:38:33 +00:00
tool Fix early data printout in bssl client. 2017-11-11 06:35:25 +00:00
util Move curve25519 code to third_party/fiat. 2017-11-03 22:23:59 +00:00
.clang-format Import `newhope' (post-quantum key exchange). 2016-04-26 22:53:59 +00:00
.gitignore Add sde-linux64 to .gitignore. 2017-05-12 14:53:07 +00:00
API-CONVENTIONS.md Fix API-CONVENTIONS.md typos. 2017-01-04 01:46:32 +00:00
BUILDING.md Revert ADX due to build issues. 2017-08-15 18:56:09 +00:00
CMakeLists.txt Move curve25519 code to third_party/fiat. 2017-11-03 22:23:59 +00:00
codereview.settings No-op change to trigger the new Bazel bot. 2016-07-07 12:07:04 -07:00
CONTRIBUTING.md Add a CONTRIBUTING.md file. 2016-02-10 21:38:19 +00:00
FUZZING.md Fix typo in FUZZING.md. 2017-07-06 18:25:07 +00:00
INCORPORATING.md Update links to Bazel's site. 2016-10-31 18:16:58 +00:00
LICENSE curve25519: fiat-crypto field arithmetic. 2017-11-03 22:39:31 +00:00
PORTING.md Switch OPENSSL_VERSION_NUMBER to 1.1.0. 2017-09-29 04:51:27 +00:00
README.md Add an API-CONVENTIONS.md document. 2016-08-04 23:27:49 +00:00
sources.cmake Add a test for lots of names and constraints. 2017-09-20 19:58:48 +00:00
STYLE.md Fix some style guide samples. 2017-08-31 14:24:45 +00:00

BoringSSL

BoringSSL is a fork of OpenSSL that is designed to meet Google's needs.

Although BoringSSL is an open source project, it is not intended for general use, as OpenSSL is. We don't recommend that third parties depend upon it. Doing so is likely to be frustrating because there are no guarantees of API or ABI stability.

Programs ship their own copies of BoringSSL when they use it and we update everything as needed when deciding to make API changes. This allows us to mostly avoid compromises in the name of compatibility. It works for us, but it may not work for you.

BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.

Currently BoringSSL is the SSL library in Chrome/Chromium, Android (but it's not part of the NDK) and a number of other apps/programs.

There are other files in this directory which might be helpful: