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0e33efe4e4
The upstream repository is on github BLAKE2/libb2. Files landed in sys/contrib/libb2 are the unmodified upstream files, except for one difference: secure_zero_memory's contents have been replaced with explicit_bzero() only because the previous implementation broke powerpc link. Preferential use of explicit_bzero() is in progress upstream, so it is anticipated we will be able to drop this diff in the future. sys/crypto/blake2 contains the source files needed to port libb2 to our build system, a wrapped (limited) variant of the algorithm to match the API of our auth_transform softcrypto abstraction, incorporation into the Open Crypto Framework (OCF) cryptosoft(4) driver, as well as an x86 SSE/AVX accelerated OCF driver, blake2(4). Optimized variants of blake2 are compiled for a number of x86 machines (anything from SSE2 to AVX + XOP). On those machines, FPU context will need to be explicitly saved before using blake2(4)-provided algorithms directly. Use via cryptodev / OCF saves FPU state automatically, and use via the auth_transform softcrypto abstraction does not use FPU. The intent of the OCF driver is mostly to enable testing in userspace via /dev/crypto. ATF tests are added with published KAT test vectors to validate correctness. Reviewed by: jhb, markj Obtained from: github BLAKE2/libb2 Differential Revision: https://reviews.freebsd.org/D14662
72 lines
1.2 KiB
C
72 lines
1.2 KiB
C
/*
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BLAKE2 reference source code package - optimized C implementations
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Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
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To the extent possible under law, the author(s) have dedicated all copyright
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and related and neighboring rights to this software to the public domain
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worldwide. This software is distributed without any warranty.
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You should have received a copy of the CC0 Public Domain Dedication along with
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this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
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*/
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#pragma once
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#ifndef __BLAKE2_CONFIG_H__
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#define __BLAKE2_CONFIG_H__
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#if defined(__SSE2__)
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#define HAVE_SSE2
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#endif
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#if defined(__SSSE3__)
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#define HAVE_SSSE3
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#endif
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#if defined(__SSE4_1__)
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#define HAVE_SSE4_1
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#endif
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#if defined(__AVX__)
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#define HAVE_AVX
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#endif
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#if defined(__XOP__)
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#define HAVE_XOP
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#endif
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#ifdef HAVE_AVX2
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#ifndef HAVE_AVX
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#define HAVE_AVX
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#endif
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#endif
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#ifdef HAVE_XOP
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#ifndef HAVE_AVX
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#define HAVE_AVX
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#endif
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#endif
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#ifdef HAVE_AVX
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#ifndef HAVE_SSE4_1
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#define HAVE_SSE4_1
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#endif
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#endif
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#ifdef HAVE_SSE41
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#ifndef HAVE_SSSE3
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#define HAVE_SSSE3
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#endif
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#endif
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#ifdef HAVE_SSSE3
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#define HAVE_SSE2
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#endif
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#if !defined(HAVE_SSE2)
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#error "This code requires at least SSE2."
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#endif
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#endif
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