95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/* Copyright 2018 Canaan Inc.
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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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#ifndef _SHA256_H
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#define _SHA256_H
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#include <stdint.h>
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#include "env/encoding.h"
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#include "platform.h"
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#define DISABLE_SHA_DMA 0
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#define ENABLE_SHA_DMA 1
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/**
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* @brief AES
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*
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*/
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struct sha256_t
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{
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uint32_t sha_result[8];
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uint32_t sha_data_in1;
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uint32_t sha_data_in2;
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uint32_t sha_data_num; /*1 unit represents 64 bytes*/
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uint32_t sha_status;
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uint32_t reserved0;
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uint32_t sha_input_ctrl;
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} __attribute__((packed, aligned(4)));
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#define SHA256_HASH_SIZE 32
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/* Hash size in 32-bit words */
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#define SHA256_HASH_WORDS 8
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struct _SHA256Context
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{
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uint64_t totalLength;
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uint32_t hash[SHA256_HASH_WORDS];
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uint32_t bufferLength;
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union
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{
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uint32_t words[16];
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uint8_t bytes[64];
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} buffer;
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#ifdef RUNTIME_ENDIAN
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int littleEndian;
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#endif /* RUNTIME_ENDIAN */
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};
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typedef struct _SHA256Context SHA256Context;
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/**
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* @brief Sha256 initialize
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*
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* @param[in] dma_en Dma enable flag
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* @param[in] input_size Input size
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* @param[in] sc Sha256 Context point
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*
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* @return Result
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* - 0 Success
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* - Other Fail
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*/
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int sha256_init(uint8_t dma_en, uint32_t input_size, SHA256Context *sc);
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/**
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* @brief Sha256 update
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*
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* @param[in] sc Sha256 Context point
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* @param[in] data Input data point
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* @param[in] len Input data size
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*
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*/
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void sha256_update(SHA256Context *sc, const void *data, uint32_t len);
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/**
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* @brief Sha256 final
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*
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* @param[in] sc Sha256 Context point
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* @param[out] hash Sha256 result
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*
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*/
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void sha256_final(SHA256Context *sc, uint8_t hash[SHA256_HASH_SIZE]);
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#endif
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