Arti Zirk
2de3a91b0a
subrepo: subdir: "libopencm3" merged: "88e91c9a7cce" upstream: origin: "https://github.com/libopencm3/libopencm3.git" branch: "master" commit: "88e91c9a7cce" git-subrepo: version: "0.4.3" origin: "???" commit: "???"
165 lines
3.9 KiB
C
165 lines
3.9 KiB
C
/** @addtogroup hash_file HASH Peripheral API
|
|
*
|
|
* @ingroup peripheral_apis
|
|
*
|
|
* @author @htmlonly © @endhtmlonly 2013
|
|
* Mikhail Avkhimenia <mikhail@avkhimenia.net>
|
|
*
|
|
* This library supports the HASH processor in the STM32F2 and STM32F4
|
|
* series of ARM Cortex Microcontrollers by ST Microelectronics.
|
|
*
|
|
* LGPL License Terms @ref lgpl_license
|
|
* */
|
|
|
|
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2013 Mikhail Avkhimenia <mikhail@avkhimenia.net>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/**@{*/
|
|
|
|
#include <libopencm3/stm32/hash.h>
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Set Mode
|
|
|
|
Sets up the specified mode - either HASH or HMAC.
|
|
|
|
@param[in] mode unsigned int8. Hash processor mode: @ref hash_mode
|
|
*/
|
|
|
|
void hash_set_mode(uint8_t mode)
|
|
{
|
|
HASH_CR &= ~HASH_CR_MODE;
|
|
HASH_CR |= mode;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Set Algorithm
|
|
|
|
Sets up the specified algorithm - either MD5 or SHA1.
|
|
|
|
@param[in] algorithm unsigned int8. Hash algorithm: @ref hash_algorithm
|
|
*/
|
|
|
|
void hash_set_algorithm(uint8_t algorithm)
|
|
{
|
|
HASH_CR &= ~HASH_CR_ALGO;
|
|
HASH_CR |= algorithm;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Set Data Type
|
|
|
|
Sets up the specified data type: 32Bit, 16Bit, 8Bit, Bitstring.
|
|
|
|
@param[in] datatype unsigned int8. Hash data type: @ref hash_data_type
|
|
*/
|
|
|
|
void hash_set_data_type(uint8_t datatype)
|
|
{
|
|
HASH_CR &= ~HASH_CR_DATATYPE;
|
|
HASH_CR |= datatype;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Set Key Length
|
|
|
|
Sets up the specified key length: Long, Short.
|
|
|
|
@param[in] keylength unsigned int8. Hash data type: @ref hash_key_length
|
|
*/
|
|
|
|
void hash_set_key_length(uint8_t keylength)
|
|
{
|
|
HASH_CR &= ~HASH_CR_LKEY;
|
|
HASH_CR |= keylength;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Set Last Word Valid Bits
|
|
|
|
Specifies the number of valid bits in the last word.
|
|
|
|
@param[in] validbits unsigned int8. Number of valid bits.
|
|
*/
|
|
|
|
void hash_set_last_word_valid_bits(uint8_t validbits)
|
|
{
|
|
HASH_STR &= ~(HASH_STR_NBW);
|
|
HASH_STR |= validbits;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Init
|
|
|
|
Initializes the HASH processor.
|
|
|
|
*/
|
|
|
|
void hash_init()
|
|
{
|
|
HASH_CR |= HASH_CR_INIT;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Add data
|
|
|
|
Puts data into the HASH processor's queue.
|
|
|
|
@param[in] data unsigned int32. Hash input data.
|
|
*/
|
|
|
|
void hash_add_data(uint32_t data)
|
|
{
|
|
HASH_DIN = data;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Digest
|
|
|
|
Starts the processing of the last data block.
|
|
|
|
*/
|
|
|
|
void hash_digest()
|
|
{
|
|
HASH_STR |= HASH_STR_DCAL;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief HASH Get Hash Result
|
|
|
|
Makes a copy of the resulting hash.
|
|
|
|
@param[out] data unsigned int32. Hash 4\5 words long depending on the algorithm.
|
|
*/
|
|
|
|
void hash_get_result(uint32_t *data)
|
|
{
|
|
data[0] = HASH_HR[0];
|
|
data[1] = HASH_HR[1];
|
|
data[2] = HASH_HR[2];
|
|
data[3] = HASH_HR[3];
|
|
|
|
if ((HASH_CR & HASH_CR_ALGO) == HASH_ALGO_SHA1) {
|
|
data[4] = HASH_HR[4];
|
|
}
|
|
}
|
|
/**@}*/
|
|
|