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https://github.com/espressif/esp-idf.git
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fe71a8e340
Removed the old dynamically allocated GDMA channel approach. It proved too unreliable as we couldn't not ensure consumers of the mbedtls would properly free the channels after use. Replaced by a single shared GDMA channel for AES and SHA, which won't be released unless user specifically calls API for releasing it.
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
// Copyright 2015-2020 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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#pragma once
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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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* This API should be used by all components which use the SHA, AES, HMAC and DS crypto hardware on the ESP32S3.
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* Not all of them can be used in parallel because they use the same underlying module.
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* E.g., HMAC uses SHA or DS uses HMAC and AES. See the ESP32S3 Technical Reference Manual for more details.
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*
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* Other unrelated components must not use it.
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*/
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/**
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* @brief Acquire lock for the SHA and AES cryptography peripheral.
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*
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*/
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void esp_crypto_sha_aes_lock_acquire(void);
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/**
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* @brief Release lock for the SHA and AES cryptography peripheral.
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*
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*/
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void esp_crypto_sha_aes_lock_release(void);
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/**
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* Acquire lock for the MPI/RSA cryptography peripheral
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*/
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void esp_crypto_mpi_lock_acquire(void);
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/**
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* Release lock for the MPI/RSA cryptography peripheral
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*/
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void esp_crypto_mpi_lock_release(void);
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#ifdef __cplusplus
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}
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#endif
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