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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/crypto/sha2/sha256.h
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/*-

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 * Copyright 2005 Colin Percival

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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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#ifndef _SHA256_H_

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#define _SHA256_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 SHA256_BLOCK_LENGTH		64

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#define SHA256_DIGEST_LENGTH		32

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#define SHA256_DIGEST_STRING_LENGTH	(SHA256_DIGEST_LENGTH * 2 + 1)

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typedef struct SHA256Context {

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	uint32_t state[8];

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	uint64_t count;

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	uint8_t buf[SHA256_BLOCK_LENGTH];

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} SHA256_CTX;

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__BEGIN_DECLS

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/* Ensure libmd symbols do not clash with libcrypto */

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#ifndef SHA256_Init

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#define SHA256_Init		_libmd_SHA256_Init

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#endif

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#ifndef SHA256_Update

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#define SHA256_Update		_libmd_SHA256_Update

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#endif

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#ifndef SHA256_Final

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#define SHA256_Final		_libmd_SHA256_Final

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#endif

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#ifndef SHA256_End

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#define SHA256_End		_libmd_SHA256_End

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#endif

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#ifndef SHA256_Fd

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#define SHA256_Fd		_libmd_SHA256_Fd

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#endif

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#ifndef SHA256_FdChunk

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#define SHA256_FdChunk		_libmd_SHA256_FdChunk

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#endif

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#ifndef SHA256_File

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#define SHA256_File		_libmd_SHA256_File

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#endif

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#ifndef SHA256_FileChunk

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#define SHA256_FileChunk	_libmd_SHA256_FileChunk

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#endif

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#ifndef SHA256_Data

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#define SHA256_Data		_libmd_SHA256_Data

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#endif

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#ifndef SHA256_Transform

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#define SHA256_Transform		_libmd_SHA256_Transform

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#endif

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void	SHA256_Init(SHA256_CTX *);

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void	SHA256_Update(SHA256_CTX *, const void *, size_t);

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void	SHA256_Final(unsigned char [__min_size(SHA256_DIGEST_LENGTH)],

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    SHA256_CTX *);

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#ifndef _KERNEL

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char   *SHA256_End(SHA256_CTX *, char *);

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char   *SHA256_Data(const void *, unsigned int, char *);

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char   *SHA256_Fd(int, char *);

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char   *SHA256_FdChunk(int, char *, off_t, off_t);

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char   *SHA256_File(const char *, char *);

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char   *SHA256_FileChunk(const char *, char *, off_t, off_t);

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#endif

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__END_DECLS

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#endif /* !_SHA256_H_ */

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