52 lines
1.5 KiB
C
52 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 ESP32S2.
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* They can not be used in parallel because they use the same DMA or are calling each other.
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* E.g., HMAC uses SHA or DS uses HMAC and AES. See the ESP32S2 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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* Acquire lock for the AES and SHA cryptography peripherals, which both use the crypto DMA.
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*/
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void esp_crypto_dma_lock_acquire(void);
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/**
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* Release lock for the AES and SHA cryptography peripherals, which both use the crypto DMA.
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*/
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void esp_crypto_dma_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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