esp-idf/components/mbedtls/port/sha/block/sha.c

74 wiersze
1.6 KiB
C

/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stddef.h>
#include <sys/lock.h>
#include "soc/soc_caps.h"
#include "soc/periph_defs.h"
#include "esp_private/periph_ctrl.h"
#include "sha/sha_block.h"
#include "hal/sha_hal.h"
static _lock_t s_sha_lock;
void esp_sha_write_digest_state(esp_sha_type sha_type, void *digest_state)
{
sha_hal_write_digest(sha_type, digest_state);
}
void esp_sha_read_digest_state(esp_sha_type sha_type, void *digest_state)
{
sha_hal_read_digest(sha_type, digest_state);
}
/* Return block size (in bytes) for a given SHA type */
inline static size_t block_length(esp_sha_type type)
{
switch (type) {
case SHA1:
case SHA2_224:
case SHA2_256:
return 64;
#if SOC_SHA_SUPPORT_SHA384
case SHA2_384:
#endif
#if SOC_SHA_SUPPORT_SHA512
case SHA2_512:
#endif
#if SOC_SHA_SUPPORT_SHA512_T
case SHA2_512224:
case SHA2_512256:
case SHA2_512T:
#endif
return 128;
default:
return 0;
}
}
/* Lock the SHA peripheral and then enable it */
void esp_sha_acquire_hardware()
{
_lock_acquire(&s_sha_lock); /* Released when releasing hw with esp_sha_release_hardware() */
periph_module_enable(PERIPH_SHA_MODULE);
}
/* Disable SHA peripheral block and then release it */
void esp_sha_release_hardware()
{
periph_module_disable(PERIPH_SHA_MODULE);
_lock_release(&s_sha_lock);
}
void esp_sha_block(esp_sha_type sha_type, const void *data_block, bool is_first_block)
{
sha_hal_hash_block(sha_type, data_block, block_length(sha_type) / 4, is_first_block);
}