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ecdsa_alt.h
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ecdsa_alt.h
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/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include "sdkconfig.h"
#include "mbedtls/pk.h"
#ifdef __cplusplus
extern "C" {
#endif
#if CONFIG_MBEDTLS_HARDWARE_ECDSA_SIGN || __DOXYGEN__
/**
* @brief Initialize MPI to notify mbedtls_ecdsa_sign to use the private key in efuse
* We break the MPI struct of the private key in order to
* differentiate between hardware key and software key
*
* @param key The MPI in which this functions stores the hardware context.
* This must be uninitialized
* @param efuse_blk The efuse key block that should be used as the private key.
* The key purpose of this block must be ECDSA_KEY
*
* @return - 0 if successful
* - -1 otherwise
*
*/
int esp_ecdsa_privkey_load_mpi(mbedtls_mpi *key, int efuse_blk);
/**
* @brief Initialize PK context to notify mbedtls_ecdsa_sign to use the private key in efuse
* We break the MPI struct used to represent the private key `d` in ECP keypair
* in order to differentiate between hardware key and software key
*
* @param key_ctx The context in which this functions stores the hardware context.
* This must be uninitialized
* @param efuse_blk The efuse key block that should be used as the private key.
* The key purpose of this block must be ECDSA_KEY
*
* @return - 0 if successful
* - -1 otherwise
*/
int esp_ecdsa_privkey_load_pk_context(mbedtls_pk_context *key_ctx, int efuse_blk);
#endif // CONFIG_MBEDTLS_HARDWARE_ECDSA_SIGN || __DOXYGEN__
#ifdef __cplusplus
}
#endif