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/* |
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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 |