762e1d039c
Patch from https://mta.openssl.org/pipermail/openssl-dev/2016-March/005625.html. Upstream has yet to make a decision on aliasing requirements for their assembly. If they choose to go with the stricter aliasing requirement rather than land this patch, we'll probably want to tweak EVP_AEAD's API guarantees accordingly and then undiverge. In the meantime, import this to avoid a regression on x86 from when we had compiler-vectorized code on GCC platforms. Per our assembly coverage tools and pending multi-CPU-variant tests, we have good coverage here. Unlike Poly1305 (which is currently waiting on yet another upstream bugfix), where there is risk of missed carries everywhere, it is much more difficult to accidentally make a ChaCha20 implementation that fails based on the data passed into it. This restores a sizeable speed improvement on x86. Before: Did 1131000 ChaCha20-Poly1305 (16 bytes) seal operations in 1000205us (1130768.2 ops/sec): 18.1 MB/s Did 161000 ChaCha20-Poly1305 (1350 bytes) seal operations in 1006136us (160018.1 ops/sec): 216.0 MB/s Did 28000 ChaCha20-Poly1305 (8192 bytes) seal operations in 1023264us (27363.4 ops/sec): 224.2 MB/s Did 1166000 ChaCha20-Poly1305-Old (16 bytes) seal operations in 1000447us (1165479.0 ops/sec): 18.6 MB/s Did 160000 ChaCha20-Poly1305-Old (1350 bytes) seal operations in 1004818us (159232.8 ops/sec): 215.0 MB/s Did 30000 ChaCha20-Poly1305-Old (8192 bytes) seal operations in 1016977us (29499.2 ops/sec): 241.7 MB/s After: Did 2208000 ChaCha20-Poly1305 (16 bytes) seal operations in 1000031us (2207931.6 ops/sec): 35.3 MB/s Did 402000 ChaCha20-Poly1305 (1350 bytes) seal operations in 1001717us (401310.9 ops/sec): 541.8 MB/s Did 97000 ChaCha20-Poly1305 (8192 bytes) seal operations in 1005394us (96479.6 ops/sec): 790.4 MB/s Did 2444000 ChaCha20-Poly1305-Old (16 bytes) seal operations in 1000089us (2443782.5 ops/sec): 39.1 MB/s Did 459000 ChaCha20-Poly1305-Old (1350 bytes) seal operations in 1000563us (458741.7 ops/sec): 619.3 MB/s Did 97000 ChaCha20-Poly1305-Old (8192 bytes) seal operations in 1007942us (96235.7 ops/sec): 788.4 MB/s Change-Id: I976da606dae062a776e0cc01229ec03a074035d1 Reviewed-on: https://boringssl-review.googlesource.com/7561 Reviewed-by: Steven Valdez <svaldez@google.com> Reviewed-by: David Benjamin <davidben@google.com> |
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|---|---|---|
| .github | ||
| crypto | ||
| decrepit | ||
| fuzz | ||
| include/openssl | ||
| ssl | ||
| tool | ||
| util | ||
| .clang-format | ||
| .gitignore | ||
| BUILDING.md | ||
| CMakeLists.txt | ||
| codereview.settings | ||
| CONTRIBUTING.md | ||
| FUZZING.md | ||
| LICENSE | ||
| PORTING.md | ||
| README.md | ||
| STYLE.md | ||
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:
- PORTING.md: how to port OpenSSL-using code to BoringSSL.
- BUILDING.md: how to build BoringSSL
- STYLE.md: rules and guidelines for coding style.
- include/openssl: public headers with API documentation in comments. Also available online.
- FUZZING.md: information about fuzzing BoringSSL.
- CONTRIBUTING.md: how to contribute to BoringSSL.