Import Blake2 algorithms (blake2b, blake2s) from libb2
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
2018-03-21 16:18:14 +00:00
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/* This file is in the public domain */
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/* $FreeBSD$ */
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#pragma once
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#include <sys/endian.h>
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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#define NATIVE_LITTLE_ENDIAN 1
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#else
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/* #undef NATIVE_LITTLE_ENDIAN */
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#endif
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#if defined(__ARM_FEATURE_UNALIGNED) \
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|| defined(__i386__) || defined(__x86_64__) \
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|| defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_8__) \
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/* #undef HAVE_ALIGNED_ACCESS_REQUIRED */
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#else
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#define HAVE_ALIGNED_ACCESS_REQUIRED 1
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#endif
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2018-03-27 14:55:01 +00:00
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#define HAVE_EXPLICIT_BZERO 1
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