arduino-esp32/tools/sdk/include/esp32/rom/sha.h

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/*
ROM functions for hardware SHA support.
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It is not recommended to use these functions directly. If using
them from esp-idf then use the esp_sha_lock_engine() and
esp_sha_lock_memory_block() functions in hwcrypto/sha.h to ensure
exclusive access.
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*/
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// 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.
#ifndef _ROM_SHA_H_
#define _ROM_SHA_H_
#include <stdint.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct SHAContext {
bool start;
uint32_t total_input_bits[4];
} SHA_CTX;
enum SHA_TYPE {
SHA1 = 0,
SHA2_256,
SHA2_384,
SHA2_512,
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SHA_INVALID = -1,
};
void ets_sha_init(SHA_CTX *ctx);
void ets_sha_enable(void);
void ets_sha_disable(void);
void ets_sha_update(SHA_CTX *ctx, enum SHA_TYPE type, const uint8_t *input, size_t input_bits);
void ets_sha_finish(SHA_CTX *ctx, enum SHA_TYPE type, uint8_t *output);
#ifdef __cplusplus
}
#endif
#endif /* _ROM_SHA_H_ */