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103 lines
3.2 KiB
C
103 lines
3.2 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_sha2xx_common SHA-2xx common
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* @ingroup sys_hashes_unkeyed
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* @brief Implementation of common functionality for SHA-224/256 hashing functions
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* @{
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*
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* @file
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* @brief Common definitions for the SHA-224/256 hash functions
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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_SHA2XX_COMMON_H
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#define HASHES_SHA2XX_COMMON_H
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#include <string.h>
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#include <stdint.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 Structure to hold the SHA-2XX context.
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*/
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typedef struct {
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/** global state */
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uint32_t state[8];
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/** processed bits counter */
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uint32_t count[2];
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/** data buffer */
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unsigned char buf[64];
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} sha2xx_context_t;
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/**
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* @brief SHA-2XX initialization. Begins a SHA-2XX operation.
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*
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* @param ctx sha2xx_context_t handle to init
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*/
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void sha2xx_pad(sha2xx_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 sha2xx_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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void sha2xx_update(sha2xx_context_t *ctx, const void *data, size_t len);
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/**
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* @brief SHA-2XX 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 sha2xx_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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* @param dig_len Length of @p digest
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*/
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void sha2xx_final(sha2xx_context_t *ctx, void *digest, size_t dig_len);
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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_SHA2XX_COMMON_H */
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