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92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/*******************************************************************************
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* NOTICE
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* The hal is not public api, don't use in application code.
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* See readme.md in soc/include/hal/readme.md
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******************************************************************************/
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#pragma once
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#include <stddef.h>
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#include <stdbool.h>
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#include "soc/sha_caps.h"
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#include "soc/lldesc.h"
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#include "hal/sha_types.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 Hashes a single message block
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*
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* @param sha_type SHA algorithm to hash with
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* @param data_block Input message to be hashed
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* @param block_word_len Length of the input message
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* @param first_block Is this the first block in a message or a continuation?
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*/
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void sha_hal_hash_block(esp_sha_type sha_type, const void *data_block, size_t block_word_len, bool first_block);
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/**
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* @brief Polls and waits until the SHA engine is idle
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*
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*/
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void sha_hal_wait_idle(void);
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/**
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* @brief Reads the current message digest from the SHA engine
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*
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* @param sha_type SHA algorithm used
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* @param digest_state Output buffer to which to read message digest to
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*/
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void sha_hal_read_digest(esp_sha_type sha_type, void *digest_state);
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#if SOC_SHA_SUPPORT_RESUME
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/**
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* @brief Writes the message digest to the SHA engine
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*
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* @param sha_type The SHA algorithm type
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* @param digest_state Message digest to be written to SHA engine
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*/
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void sha_hal_write_digest(esp_sha_type sha_type, void *digest_state);
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#endif
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#if SOC_SHA_SUPPORT_DMA
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/**
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* @brief Hashes a number of message blocks using DMA
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*
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* @param sha_type SHA algorithm to hash with
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* @param input Input message to be hashed
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* @param num_blocks Number of blocks to hash
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* @param first_block Is this the first block in a message or a continuation?
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*/
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void sha_hal_hash_dma(esp_sha_type sha_type, lldesc_t *input, size_t num_blocks, bool first_block);
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#endif
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#if SOC_SHA_SUPPORT_SHA512_T
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/**
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* @brief Calculates and sets the initial digiest for SHA512_t
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*
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* @param t_string
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* @param t_len
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*/
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void sha_hal_sha512_init_hash(uint32_t t_string, uint8_t t_len);
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#endif
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#ifdef __cplusplus
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}
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#endif
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