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encryption
hmac-sha256.h
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/* hmac-sha256.h */
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/*
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This file is part of the AVR-Crypto-Lib.
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Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HMACSHA256_H_
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#define HMACSHA256_H_
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#include "openssl/sha.h"
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#define SHA256_BLOCK_BYTES 64
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#define HMAC_SHA256_DIGEST_LENGTH SHA256_DIGEST_LENGTH
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#define HMAC_SHA256_KEY_LENGTH 64
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// https://gist.github.com/112188/acdbf002acf454bd60c355a776b9a5b58b6dff5e
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void
hmac_sha256(
const
unsigned
char
*text,
/* pointer to data stream */
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int
text_len,
/* length of data stream */
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const
unsigned
char
*key,
/* pointer to authentication key */
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int
key_len,
/* length of authentication key */
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void
*digest);
/* caller digest to be filled in */
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#endif
/*HMACSHA256_H_*/
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