80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*
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* hmac_sha256.h
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*
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* Version 1.0.0
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*
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* Written by Aaron D. Gifford <me@aarongifford.com>
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*
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* Copyright 1998, 2000 Aaron D. Gifford. 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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* 3. Neither the name of the copyright holder nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) 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(S) 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 HEADER_HMAC_SHA256_H
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#define HEADER_HMAC_SHA256_H
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#include "sha2.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define HMAC_SHA256_DIGEST_LENGTH 32
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#define HMAC_SHA256_BLOCK_LENGTH 64
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/* The HMAC_SHA1 structure: */
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typedef struct _HMAC_SHA256_CTX {
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unsigned char ipad[HMAC_SHA256_BLOCK_LENGTH];
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unsigned char opad[HMAC_SHA256_BLOCK_LENGTH];
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SHA256_CTX shactx;
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unsigned char key[HMAC_SHA256_BLOCK_LENGTH];
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unsigned int keylen;
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unsigned int hashkey;
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} HMAC_SHA256_CTX;
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#ifndef NOPROTO
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void HMAC_SHA256_Init(HMAC_SHA256_CTX *ctx);
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void HMAC_SHA256_UpdateKey(HMAC_SHA256_CTX *ctx, unsigned char *key, unsigned int keylen);
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void HMAC_SHA256_EndKey(HMAC_SHA256_CTX *ctx);
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void HMAC_SHA256_StartMessage(HMAC_SHA256_CTX *ctx);
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void HMAC_SHA256_UpdateMessage(HMAC_SHA256_CTX *ctx, unsigned char *data, unsigned int datalen);
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void HMAC_SHA256_EndMessage(unsigned char *out, HMAC_SHA256_CTX *ctx);
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void HMAC_SHA256_Done(HMAC_SHA256_CTX *ctx);
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#else
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void HMAC_SHA256_Init();
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void HMAC_SHA256_UpdateKey();
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void HMAC_SHA256_EndKey();
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void HMAC_SHA256_StartMessage();
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void HMAC_SHA256_UpdateMessage();
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void HMAC_SHA256_EndMessage();
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void HMAC_SHA256_Done();
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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