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