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60 lines
2.3 KiB
60 lines
2.3 KiB
// Copyright (c) 2014-2022, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef HMAC_KECCAK_H
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#define HMAC_KECCAK_H
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#include "keccak.h"
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// HMAC RFC 2104 with Keccak-256 base hash function
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//
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// B = KECCAK_BLOCKLEN = 136 B
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// L = HASH_SIZE = 32 B
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//
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// Note this is not HMAC-SHA3 as SHA3 and Keccak differs in
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// the padding constant.
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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KECCAK_CTX inner;
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KECCAK_CTX outer;
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} hmac_keccak_state;
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void hmac_keccak_init(hmac_keccak_state *S, const uint8_t *_key, size_t keylen);
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void hmac_keccak_update(hmac_keccak_state *S, const uint8_t *data, size_t datalen);
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void hmac_keccak_finish(hmac_keccak_state *S, uint8_t *digest);
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void hmac_keccak_hash(uint8_t *out, const uint8_t *key, size_t keylen, const uint8_t *in, size_t inlen);
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#ifdef __cplusplus
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}
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#endif
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#endif //HMAC_KECCAK_H
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