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120 lines
3.0 KiB
120 lines
3.0 KiB
3 years ago
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/*
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---------------------------------------------------------------------------
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Copyright (c) 1998-2010, Brian Gladman, Worcester, UK. All rights reserved.
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The redistribution and use of this software (with or without changes)
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is allowed without the payment of fees or royalties provided that:
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source code distributions include the above copyright notice, this
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list of conditions and the following disclaimer;
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binary distributions include the above copyright notice, this list
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of conditions and the following disclaimer in their documentation.
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This software is provided 'as is' with no explicit or implied warranties
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in respect of its operation, including, but not limited to, correctness
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and fitness for purpose.
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---------------------------------------------------------------------------
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Issue Date: 20/12/2007
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This is an implementation of HMAC, the FIPS standard keyed hash function
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*/
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#ifndef _HMAC2_H
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#define _HMAC2_H
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#include <stdlib.h>
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#include <string.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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#include "sha1.h"
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#if defined(SHA_224) || defined(SHA_256) || defined(SHA_384) || defined(SHA_512)
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#define HMAC_MAX_OUTPUT_SIZE SHA2_MAX_DIGEST_SIZE
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#define HMAC_MAX_BLOCK_SIZE SHA2_MAX_BLOCK_SIZE
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#else
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#define HMAC_MAX_OUTPUT_SIZE SHA1_DIGEST_SIZE
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#define HMAC_MAX_BLOCK_SIZE SHA1_BLOCK_SIZE
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#endif
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#define HMAC_IN_DATA 0xffffffff
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enum hmac_hash
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{
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#ifdef SHA_1
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HMAC_SHA1,
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#endif
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#ifdef SHA_224
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HMAC_SHA224,
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#endif
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#ifdef SHA_256
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HMAC_SHA256,
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#endif
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#ifdef SHA_384
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HMAC_SHA384,
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#endif
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#ifdef SHA_512
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HMAC_SHA512,
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HMAC_SHA512_256,
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HMAC_SHA512_224,
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HMAC_SHA512_192,
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HMAC_SHA512_128
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#endif
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};
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typedef VOID_RETURN hf_begin(void*);
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typedef VOID_RETURN hf_hash(const void*, unsigned long len, void*);
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typedef VOID_RETURN hf_end(void*, void*);
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typedef struct
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{ hf_begin *f_begin;
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hf_hash *f_hash;
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hf_end *f_end;
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unsigned char key[HMAC_MAX_BLOCK_SIZE];
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union
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{
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#ifdef SHA_1
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sha1_ctx u_sha1;
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#endif
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#ifdef SHA_224
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sha224_ctx u_sha224;
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#endif
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#ifdef SHA_256
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sha256_ctx u_sha256;
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#endif
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#ifdef SHA_384
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sha384_ctx u_sha384;
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#endif
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#ifdef SHA_512
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sha512_ctx u_sha512;
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#endif
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} sha_ctx[1];
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unsigned long input_len;
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unsigned long output_len;
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unsigned long klen;
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} hmac_ctx;
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/* returns the length of hash digest for the hash used */
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/* mac_len must not be greater than this */
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int hmac_sha_begin(enum hmac_hash hash, hmac_ctx cx[1]);
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int hmac_sha_key(const unsigned char key[], unsigned long key_len, hmac_ctx cx[1]);
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void hmac_sha_data(const unsigned char data[], unsigned long data_len, hmac_ctx cx[1]);
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void hmac_sha_end(unsigned char mac[], unsigned long mac_len, hmac_ctx cx[1]);
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void hmac_sha(enum hmac_hash hash, const unsigned char key[], unsigned long key_len,
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const unsigned char data[], unsigned long data_len,
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unsigned char mac[], unsigned long mac_len);
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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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