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/*
* hash.h: definition of and support fns for tb_hash_t type
*
* Copyright (c) 2006-2007, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __HASH_H__
#define __HASH_H__
#define TB_HALG_SHA1_LG 0x0000 /* legacy define for SHA1 */
#define TB_HALG_SHA1 0x0004
#define TB_HALG_SHA256 0x000B
#define TB_HALG_SM3 0x0012
#define TB_HALG_SHA384 0x000C
#define TB_HALG_SHA512 0x000D
#define TB_HALG_NULL 0x0010
#define SHA1_LENGTH 20
#define SHA256_LENGTH 32
#define SM3_LENGTH 32
#define SHA384_LENGTH 48
#define SHA512_LENGTH 64
typedef uint8_t sha1_hash_t[SHA1_LENGTH];
typedef uint8_t sha256_hash_t[SHA256_LENGTH];
typedef uint8_t sm3_hash_t[SM3_LENGTH];
typedef uint8_t sha384_hash_t[SHA384_LENGTH];
typedef uint8_t sha512_hash_t[SHA512_LENGTH];
typedef union {
uint8_t sha1[SHA1_LENGTH];
uint8_t sha256[SHA256_LENGTH];
uint8_t sm3[SM3_LENGTH];
uint8_t sha384[SHA384_LENGTH];
} tb_hash_t;
static inline const char *hash_alg_to_string(uint16_t hash_alg)
{
if ( hash_alg == TB_HALG_SHA1 || hash_alg == TB_HALG_SHA1_LG )
return "TB_HALG_SHA1";
else if ( hash_alg == TB_HALG_SHA256 )
return "TB_HALG_SHA256";
else if ( hash_alg == TB_HALG_SM3 )
return "TB_HALG_SM3";
else if ( hash_alg == TB_HALG_SHA384 )
return "TB_HALG_SHA384";
else if ( hash_alg == TB_HALG_SHA512 )
return "TB_HALG_SHA512";
else {
static char buf[32];
snprintf(buf, sizeof(buf), "unsupported (%u)", hash_alg);
return buf;
}
}
static inline unsigned int get_hash_size(uint16_t hash_alg)
{
if ( hash_alg == TB_HALG_SHA1 || hash_alg == TB_HALG_SHA1_LG )
return SHA1_LENGTH;
else if ( hash_alg == TB_HALG_SHA256 )
return SHA256_LENGTH;
else if ( hash_alg == TB_HALG_SM3 )
return SM3_LENGTH;
else if ( hash_alg == TB_HALG_SHA384 )
return SHA384_LENGTH;
else if ( hash_alg == TB_HALG_SHA512 )
return SHA512_LENGTH;
else
return 0;
}
bool are_hashes_equal(const tb_hash_t *hash1, const tb_hash_t *hash2,
uint16_t hash_alg);
bool hash_buffer(const unsigned char* buf, size_t size, tb_hash_t *hash,
uint16_t hash_alg);
bool extend_hash(tb_hash_t *hash1, const tb_hash_t *hash2,
uint16_t hash_alg);
void print_hash(const tb_hash_t *hash, uint16_t hash_alg);
void copy_hash(tb_hash_t *dest_hash, const tb_hash_t *src_hash,
uint16_t hash_alg);
#endif /* __HASH_H__ */
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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