esp-idf/components/mbedtls/port/include/sha512_alt.h

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/*
* SHA-512 implementation with hardware ESP32 support added.
* Uses mbedTLS software implementation for failover when concurrent
* SHA operations are in use.
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* Additions Copyright (C) 2016, Espressif Systems (Shanghai) PTE LTD
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
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#ifndef _SHA512_ALT_H_
#define _SHA512_ALT_H_
#if defined(MBEDTLS_SHA512_ALT)
#include "hal/sha_types.h"
#include "soc/sha_caps.h"
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#ifdef __cplusplus
extern "C" {
#endif
#if SOC_SHA_SUPPORT_PARALLEL_ENG
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typedef enum {
ESP_MBEDTLS_SHA512_UNUSED, /* first block hasn't been processed yet */
ESP_MBEDTLS_SHA512_HARDWARE, /* using hardware SHA engine */
ESP_MBEDTLS_SHA512_SOFTWARE, /* using software SHA */
} esp_mbedtls_sha512_mode;
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/**
* \brief SHA-512 context structure
*/
typedef struct {
uint64_t total[2]; /*!< number of bytes processed */
uint64_t state[8]; /*!< intermediate digest state */
unsigned char buffer[128]; /*!< data block being processed */
int is384; /*!< 0 => SHA-512, else SHA-384 */
esp_mbedtls_sha512_mode mode;
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} mbedtls_sha512_context;
#elif SOC_SHA_SUPPORT_DMA
typedef enum {
ESP_SHA512_STATE_INIT,
ESP_SHA512_STATE_IN_PROCESS
} esp_sha512_state;
/**
* \brief SHA-512 context structure
*/
typedef struct {
uint64_t total[2]; /*!< number of bytes processed */
uint64_t state[8]; /*!< intermediate digest state */
unsigned char buffer[128]; /*!< data block being processed */
int first_block;
esp_sha_type mode;
uint32_t t_val; /*!< t_val for 512/t mode */
esp_sha512_state sha_state;
} mbedtls_sha512_context;
/**
* @brief Sets the specfic algorithm for SHA512
*
* @param ctx The mbedtls sha512 context
*
* @param type The mode, used for setting SHA2_512224 and SHA2_512256:
*
*/
void esp_sha512_set_mode(mbedtls_sha512_context *ctx, esp_sha_type type);
/* For SHA512/t mode the intial hash value will depend on t */
void esp_sha512_set_t( mbedtls_sha512_context *ctx, uint16_t t_val);
#endif
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#endif
#ifdef __cplusplus
}
#endif
#endif