152 lines
4.4 KiB
C
152 lines
4.4 KiB
C
/*
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---------------------------------------------------------------------------
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Copyright (c) 2002, Dr Brian Gladman, Worcester, UK. All rights reserved.
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LICENSE TERMS
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The free distribution and use of this software in both source and binary
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form is allowed (with or without changes) provided that:
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1. distributions of this source code include the above copyright
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notice, this list of conditions and the following disclaimer;
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2. distributions in binary form include the above copyright
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notice, this list of conditions and the following disclaimer
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in the documentation and/or other associated materials;
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3. the copyright holder's name is not used to endorse products
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built using this software without specific written permission.
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ALTERNATIVELY, provided that this notice is retained in full, this product
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may be distributed under the terms of the GNU General Public License (GPL),
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in which case the provisions of the GPL apply INSTEAD OF those given above.
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DISCLAIMER
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This software is provided 'as is' with no explicit or implied warranties
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in respect of its properties, including, but not limited to, correctness
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and/or fitness for purpose.
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---------------------------------------------------------------------------
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Issue Date: 01/08/2005
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*/
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#ifndef _SHA2_H
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#define _SHA2_H
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#include <stdlib.h>
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#define SHA_64BIT
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/* define the hash functions that you need */
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#define SHA_2 /* for dynamic hash length */
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#define SHA_224
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#define SHA_256
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#ifdef SHA_64BIT
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# define SHA_384
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# define SHA_512
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# define NEED_UINT_64T
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#endif
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#include "brg_types.h"
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#if defined(__cplusplus)
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extern "C"
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{
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#endif
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/* Note that the following function prototypes are the same */
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/* for both the bit and byte oriented implementations. But */
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/* the length fields are in bytes or bits as is appropriate */
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/* for the version used. Bit sequences are arrays of bytes */
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/* in which bit sequence indexes increase from the most to */
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/* the least significant end of each byte */
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#define SHA224_DIGEST_SIZE 28
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#define SHA224_BLOCK_SIZE 64
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#define SHA256_DIGEST_SIZE 32
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#define SHA256_BLOCK_SIZE 64
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/* type to hold the SHA256 (and SHA224) context */
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typedef struct
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{ uint_32t count[2];
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uint_32t hash[8];
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uint_32t wbuf[16];
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} sha256_ctx;
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typedef sha256_ctx sha224_ctx;
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VOID_RETURN sha256_compile(sha256_ctx ctx[1]);
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VOID_RETURN sha224_begin(sha224_ctx ctx[1]);
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#define sha224_hash sha256_hash
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VOID_RETURN sha224_end(unsigned char hval[], sha224_ctx ctx[1]);
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VOID_RETURN sha224(unsigned char hval[], const unsigned char data[], unsigned long len);
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VOID_RETURN sha256_begin(sha256_ctx ctx[1]);
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VOID_RETURN sha256_hash(const unsigned char data[], unsigned long len, sha256_ctx ctx[1]);
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VOID_RETURN sha256_end(unsigned char hval[], sha256_ctx ctx[1]);
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VOID_RETURN sha256(unsigned char hval[], const unsigned char data[], unsigned long len);
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#ifndef SHA_64BIT
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typedef struct
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{ union
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{ sha256_ctx ctx256[1];
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} uu[1];
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uint_32t sha2_len;
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} sha2_ctx;
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#define SHA2_MAX_DIGEST_SIZE SHA256_DIGEST_SIZE
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#else
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#define SHA384_DIGEST_SIZE 48
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#define SHA384_BLOCK_SIZE 128
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#define SHA512_DIGEST_SIZE 64
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#define SHA512_BLOCK_SIZE 128
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#define SHA2_MAX_DIGEST_SIZE SHA512_DIGEST_SIZE
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/* type to hold the SHA384 (and SHA512) context */
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typedef struct
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{ uint_64t count[2];
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uint_64t hash[8];
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uint_64t wbuf[16];
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} sha512_ctx;
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typedef sha512_ctx sha384_ctx;
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typedef struct
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{ union
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{ sha256_ctx ctx256[1];
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sha512_ctx ctx512[1];
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} uu[1];
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uint_32t sha2_len;
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} sha2_ctx;
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VOID_RETURN sha512_compile(sha512_ctx ctx[1]);
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VOID_RETURN sha384_begin(sha384_ctx ctx[1]);
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#define sha384_hash sha512_hash
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VOID_RETURN sha384_end(unsigned char hval[], sha384_ctx ctx[1]);
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VOID_RETURN sha384(unsigned char hval[], const unsigned char data[], unsigned long len);
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VOID_RETURN sha512_begin(sha512_ctx ctx[1]);
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VOID_RETURN sha512_hash(const unsigned char data[], unsigned long len, sha512_ctx ctx[1]);
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VOID_RETURN sha512_end(unsigned char hval[], sha512_ctx ctx[1]);
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VOID_RETURN sha512(unsigned char hval[], const unsigned char data[], unsigned long len);
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INT_RETURN sha2_begin(unsigned long size, sha2_ctx ctx[1]);
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VOID_RETURN sha2_hash(const unsigned char data[], unsigned long len, sha2_ctx ctx[1]);
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VOID_RETURN sha2_end(unsigned char hval[], sha2_ctx ctx[1]);
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INT_RETURN sha2(unsigned char hval[], unsigned long size, const unsigned char data[], unsigned long len);
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#endif
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#if defined(__cplusplus)
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}
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#endif
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#endif
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