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125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/*-
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* Copyright 2005 Colin Percival
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* Copyright 2013 Christian Mehlis & René Kijewski
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* Copyright 2016 Martin Landsmann <martin.landsmann@haw-hamburg.de>
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* Copyright 2016 OTA keys S.A.
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* Copyright 2020 HAW Hamburg
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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
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 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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* $FreeBSD: src/lib/libmd/sha256.h,v 1.1.2.1 2005/06/24 13:32:25 cperciva Exp $
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*/
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/**
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* @defgroup sys_hashes_sha224 SHA-224
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* @ingroup sys_hashes_unkeyed
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* @brief Implementation of the SHA-224 hashing function
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* @{
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*
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* @file
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* @brief Header definitions for the SHA224 hash function
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*
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* @author Colin Percival
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* @author Christian Mehlis
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* @author Rene Kijewski
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* @author Hermann Lelong
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* @author Peter Kietzmann
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*/
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#ifndef HASHES_SHA224_H
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#define HASHES_SHA224_H
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#include <inttypes.h>
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#include <stddef.h>
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#include "hashes/sha2xx_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Length of SHA224 digests in bytes
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*/
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#define SHA224_DIGEST_LENGTH (28)
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/**
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* @brief 512 Bit (64 Byte) internally used block size for sha224
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*/
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#define SHA224_INTERNAL_BLOCK_SIZE (64)
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/**
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* @brief Context for cipher operations based on sha224
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*/
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typedef sha2xx_context_t sha224_context_t;
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/**
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* @brief SHA-224 initialization. Begins a SHA-224 operation.
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*
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* @param ctx sha224_context_t handle to init
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*/
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void sha224_init(sha224_context_t *ctx);
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/**
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* @brief Add bytes into the hash
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*
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* @param ctx sha224_context_t handle to use
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* @param[in] data Input data
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* @param[in] len Length of @p data
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*/
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static inline void sha224_update(sha224_context_t *ctx, const void *data, size_t len)
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{
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sha2xx_update(ctx, data, len);
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}
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/**
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* @brief SHA-224 finalization. Pads the input data, exports the hash value,
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* and clears the context state.
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*
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* @param ctx sha224_context_t handle to use
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* @param digest resulting digest, this is the hash of all the bytes
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*/
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static inline void sha224_final(sha224_context_t *ctx, void *digest)
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{
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sha2xx_final(ctx, digest, SHA224_DIGEST_LENGTH);
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}
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/**
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* @brief A wrapper function to simplify the generation of a hash, this is
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* useful for generating sha224 for one buffer
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*
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* @param[in] data pointer to the buffer to generate hash from
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* @param[in] len length of the buffer
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* @param[out] digest optional pointer to an array for the result, length must
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* be SHA224_DIGEST_LENGTH
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* if digest == NULL, one static buffer is used
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*/
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void *sha224(const void *data, size_t len, void *digest);
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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#endif /* HASHES_SHA224_H */
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