103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/*
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* Original file:
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Port to Contiki:
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* Copyright (c) 2013, ADVANSEE - http://www.advansee.com/
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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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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \addtogroup cc2538-crypto
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* @{
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*
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* \defgroup cc2538-sha526 cc2538 SHA-256
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*
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* Driver for the cc2538 SHA-256 mode of the security core
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* @{
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*
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* \file
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* Header file for the cc2538 SHA-256 driver
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*/
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#ifndef SHA256_H_
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#define SHA256_H_
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#include "contiki.h"
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#include "dev/crypto.h"
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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/** \name SHA-256 structures
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* @{
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*/
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typedef struct {
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uint64_t length;
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uint32_t state[8];
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uint32_t curlen;
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uint8_t buf[64];
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uint8_t new_digest;
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uint8_t final_digest;
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} sha256_state_t;
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/** @} */
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/*---------------------------------------------------------------------------*/
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/** \name SHA-256 functions
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* @{
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*/
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/** \brief Initializes the hash state
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* \param state Pointer to hash state to initialize
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* \return \c CRYPTO_SUCCESS if successful, or CRYPTO/SHA256 error code
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*/
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uint8_t sha256_init(sha256_state_t *state);
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/** \brief Processes a block of memory through the hash
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* \param state Pointer to hash state
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* \param data Pointer to the data to hash
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* \param len Length of the data to hash in bytes (octets)
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* \return \c CRYPTO_SUCCESS if successful, or CRYPTO/SHA256 error code
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* \note This function must be called only after \c sha256_init().
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*/
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uint8_t sha256_process(sha256_state_t *state, const void *data, uint32_t len);
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/** \brief Terminates hash session to get the digest
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* \param state Pointer to hash state
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* \param hash Pointer to hash
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* \return \c CRYPTO_SUCCESS if successful, or CRYPTO/SHA256 error code
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* \note This function must be called only after \c sha256_process().
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*/
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uint8_t sha256_done(sha256_state_t *state, void *hash);
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/** @} */
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#endif /* SHA256_H_ */
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/**
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* @}
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* @}
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*/
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