mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
112 lines
4.5 KiB
C
112 lines
4.5 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include "mbedtls/ecp.h"
|
|
#include "mbedtls/pk.h"
|
|
#include "sdkconfig.h"
|
|
#include "soc/soc_caps.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define USE_ECDSA_KEY_FROM_KEY_MANAGER INT_MAX
|
|
|
|
/**
|
|
* @brief ECDSA private key context initialization config structure
|
|
* @note Contains configuration information like the efuse key block that should be used as the private key,
|
|
* EC group ID of the private key and if the export public key operation is supported
|
|
* by the peripheral, a flag load_pubkey that is used specify if the public key has to be populated
|
|
*/
|
|
typedef struct {
|
|
mbedtls_ecp_group_id grp_id; /*!< MbedTLS ECP group identifier */
|
|
uint8_t efuse_block; /*!< EFuse block id for ECDSA private key */
|
|
#ifdef SOC_ECDSA_SUPPORT_EXPORT_PUBKEY
|
|
bool load_pubkey; /*!< Export ECDSA public key from the hardware */
|
|
|
|
#endif
|
|
bool use_km_key; /*!< Use key deployed in the key manager for ECDSA operation.
|
|
Note: The key must be already deployed by the application and it must be activated for the lifetime of this context */
|
|
} esp_ecdsa_pk_conf_t; //TODO: IDF-9008 (Add a config to select the ecdsa key from the key manager peripheral)
|
|
|
|
#if SOC_ECDSA_SUPPORT_EXPORT_PUBKEY || __DOXYGEN__
|
|
|
|
/**
|
|
* @brief Populate the public key buffer of the mbedtls_ecp_keypair context.
|
|
*
|
|
* @param keypair The mbedtls ECP key-pair structure
|
|
* @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
|
|
* - MBEDTLS_ERR_ECP_BAD_INPUT_DATA if invalid ecp group id specified
|
|
* - MBEDTLS_ERR_ECP_INVALID_KEY if efuse block with purpose ECDSA_KEY is not found
|
|
* - -1 if invalid efuse block is specified
|
|
*/
|
|
int esp_ecdsa_load_pubkey(mbedtls_ecp_keypair *keypair, int efuse_blk);
|
|
|
|
#endif // SOC_ECDSA_SUPPORT_EXPORT_PUBKEY || __DOXYGEN__
|
|
|
|
#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);
|
|
|
|
/**
|
|
* @brief Initialize PK context and completely populate mbedtls_ecp_keypair context.
|
|
* 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.
|
|
* We also populate the ECP group field present in the mbedtls_ecp_keypair context.
|
|
* If the ECDSA peripheral of the chip supports exporting the public key,
|
|
* we can also populate the public key buffer of the mbedtls_ecp_keypair context
|
|
* if the load_pubkey flag is set in the esp_ecdsa_pk_conf_t config argument.
|
|
*
|
|
* @param key_ctx The context in which this functions stores the hardware context.
|
|
* This must be uninitialized
|
|
* @param conf ESP-ECDSA private key context initialization config structure
|
|
*
|
|
* @return - 0 if successful
|
|
* - -1 otherwise
|
|
*/
|
|
int esp_ecdsa_set_pk_context(mbedtls_pk_context *key_ctx, esp_ecdsa_pk_conf_t *conf);
|
|
|
|
#endif // CONFIG_MBEDTLS_HARDWARE_ECDSA_SIGN || __DOXYGEN__
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|