1780e40715
This implements SHA-512/256, which generates a 256 bit hash by calculating the SHA-512 then truncating the result. A different initial value is used, making the result different from the first 256 bits of the SHA-512 of the same input. SHA-512 is ~50% faster than SHA-256 on 64bit platforms, so the result is a faster 256 bit hash. The main goal of this implementation is to enable support for this faster hashing algorithm in ZFS. The feature was introduced into ZFS in r289422, but is disconnected because SHA-512/256 support was missing. A further commit will enable it in ZFS. This is the follow on to r292782 Reviewed by: cem Sponsored by: ScaleEngine Inc. Differential Revision: https://reviews.freebsd.org/D6061
126 lines
4.1 KiB
C
126 lines
4.1 KiB
C
/*-
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* Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SHA512T_H_
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#define _SHA512T_H_
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#include "sha512.h"
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#ifndef _KERNEL
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#include <sys/types.h>
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#endif
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#define SHA512_224_DIGEST_LENGTH 28
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#define SHA512_224_DIGEST_STRING_LENGTH (SHA512_224_DIGEST_LENGTH * 2 + 1)
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#define SHA512_256_DIGEST_LENGTH 32
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#define SHA512_256_DIGEST_STRING_LENGTH (SHA512_256_DIGEST_LENGTH * 2 + 1)
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__BEGIN_DECLS
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/* Ensure libmd symbols do not clash with libcrypto */
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#ifndef SHA512_224_Init
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#define SHA512_224_Init _libmd_SHA512_224_Init
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#endif
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#ifndef SHA512_224_Update
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#define SHA512_224_Update _libmd_SHA512_224_Update
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#endif
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#ifndef SHA512_224_Final
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#define SHA512_224_Final _libmd_SHA512_224_Final
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#endif
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#ifndef SHA512_224_End
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#define SHA512_224_End _libmd_SHA512_224_End
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#endif
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#ifndef SHA512_224_File
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#define SHA512_224_File _libmd_SHA512_224_File
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#endif
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#ifndef SHA512_224_FileChunk
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#define SHA512_224_FileChunk _libmd_SHA512_224_FileChunk
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#endif
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#ifndef SHA512_224_Data
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#define SHA512_224_Data _libmd_SHA512_224_Data
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#endif
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#ifndef SHA512_224_Transform
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#define SHA512_224_Transform _libmd_SHA512_224_Transform
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#endif
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#ifndef SHA512_224_version
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#define SHA512_224_version _libmd_SHA512_224_version
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#endif
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#ifndef SHA512_256_Init
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#define SHA512_256_Init _libmd_SHA512_256_Init
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#endif
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#ifndef SHA512_256_Update
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#define SHA512_256_Update _libmd_SHA512_256_Update
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#endif
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#ifndef SHA512_256_Final
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#define SHA512_256_Final _libmd_SHA512_256_Final
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#endif
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#ifndef SHA512_256_End
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#define SHA512_256_End _libmd_SHA512_256_End
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#endif
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#ifndef SHA512_256_File
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#define SHA512_256_File _libmd_SHA512_256_File
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#endif
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#ifndef SHA512_256_FileChunk
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#define SHA512_256_FileChunk _libmd_SHA512_256_FileChunk
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#endif
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#ifndef SHA512_256_Data
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#define SHA512_256_Data _libmd_SHA512_256_Data
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#endif
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#ifndef SHA512_256_Transform
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#define SHA512_256_Transform _libmd_SHA512_256_Transform
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#endif
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#ifndef SHA512_256_version
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#define SHA512_256_version _libmd_SHA512_256_version
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#endif
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void SHA512_224_Init(SHA512_CTX *);
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void SHA512_224_Update(SHA512_CTX *, const void *, size_t);
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void SHA512_224_Final(unsigned char [static SHA512_224_DIGEST_LENGTH], SHA512_CTX *);
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#ifndef _KERNEL
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char *SHA512_224_End(SHA512_CTX *, char *);
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char *SHA512_224_Data(const void *, unsigned int, char *);
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char *SHA512_224_File(const char *, char *);
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char *SHA512_224_FileChunk(const char *, char *, off_t, off_t);
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#endif
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void SHA512_256_Init(SHA512_CTX *);
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void SHA512_256_Update(SHA512_CTX *, const void *, size_t);
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void SHA512_256_Final(unsigned char [static SHA512_256_DIGEST_LENGTH], SHA512_CTX *);
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#ifndef _KERNEL
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char *SHA512_256_End(SHA512_CTX *, char *);
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char *SHA512_256_Data(const void *, unsigned int, char *);
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char *SHA512_256_File(const char *, char *);
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char *SHA512_256_FileChunk(const char *, char *, off_t, off_t);
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#endif
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__END_DECLS
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#endif /* !_SHA512T_H_ */
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