/*
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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
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them from esp-idf then use the esp_sha_lock_engine() and
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esp_sha_lock_memory_block() functions in hwcrypto/sha.h to ensure
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exclusive access.
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*/
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// Copyright 2015-2016 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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// 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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#ifndef _ROM_SHA_H_
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#define _ROM_SHA_H_
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct SHAContext {
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bool start;
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uint32_t total_input_bits[4];
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} SHA_CTX;
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enum SHA_TYPE {
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SHA1 = 0,
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SHA2_256,
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SHA2_384,
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SHA2_512,
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SHA_INVALID = -1,
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};
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void ets_sha_init(SHA_CTX *ctx);
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void ets_sha_enable(void);
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void ets_sha_disable(void);
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void ets_sha_update(SHA_CTX *ctx, enum SHA_TYPE type, const uint8_t *input, size_t input_bits);
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void ets_sha_finish(SHA_CTX *ctx, enum SHA_TYPE type, uint8_t *output);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ROM_SHA_H_ */
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