/** * Copyright (c) 2018 - 2020, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef OBERON_BACKEND_ECC_H__ #define OBERON_BACKEND_ECC_H__ #include "sdk_config.h" #include "nordic_common.h" #if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON) #include #include #include "nrf_crypto_ecc_shared.h" #ifdef __cplusplus extern "C" { #endif /** @internal See @ref nrf_crypto_backend_ecc_private_key_from_raw_fn_t. */ ret_code_t nrf_crypto_backend_oberon_private_key_from_raw( void * p_private_key, uint8_t const * p_raw_data); /** @internal See @ref nrf_crypto_backend_ecc_private_key_to_raw_fn_t. */ ret_code_t nrf_crypto_backend_oberon_private_key_to_raw( void const * p_private_key, uint8_t * p_raw_data); /** @internal See @ref nrf_crypto_backend_ecc_public_key_from_raw_fn_t. */ ret_code_t nrf_crypto_backend_oberon_public_key_from_raw( void * p_public_key, uint8_t const * p_raw_data); /** @internal See @ref nrf_crypto_backend_ecc_public_key_to_raw_fn_t. */ ret_code_t nrf_crypto_backend_oberon_public_key_to_raw( void const * p_public_key, uint8_t * p_raw_data); #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_SECP256R1) #if NRF_MODULE_ENABLED(NRF_CRYPTO_ECC_SECP256R1) #error "More than one backend enabled for secp256r1 (NIST 256-bit)."); #endif #define NRF_CRYPTO_ECC_SECP256R1_ENABLED 1 /** @internal @brief Generates random number that can be used as a private key for secp256r1. * * It uses RNG from libary frontend to generate random numbers. * * @param[out] data Array where generated random number will be placed. * @returns NRF_SUCCESS or error code passed from RNG frontend. */ ret_code_t nrf_crypto_backend_oberon_ecc_secp256r1_rng(uint8_t data[32]); /** @internal @brief Structure holding private key for Oberon's secp256r1. */ typedef struct { nrf_crypto_internal_ecc_key_header_t header; /**< @internal @brief Common ECC key header. */ uint8_t key[32]; /**< @internal @brief Raw key. */ } nrf_crypto_backend_secp256r1_private_key_t; /** @internal @brief Structure holding public key for Oberon's secp256r1. */ typedef struct { nrf_crypto_internal_ecc_key_header_t header; /**< @internal @brief Common ECC key header. */ uint8_t key[64]; /**< @internal @brief Raw key. */ } nrf_crypto_backend_secp256r1_public_key_t; /** @internal See @ref nrf_crypto_backend_ecc_key_pair_generate_fn_t. */ ret_code_t nrf_crypto_backend_secp256r1_key_pair_generate( void * p_context, void * p_private_key, void * p_public_key); /** @internal See @ref nrf_crypto_backend_ecc_public_key_calculate_fn_t. */ ret_code_t nrf_crypto_backend_secp256r1_public_key_calculate( void * p_context, void const * p_private_key, void * p_public_key); // Common key conversion functions #define nrf_crypto_backend_secp256r1_private_key_from_raw \ nrf_crypto_backend_oberon_private_key_from_raw #define nrf_crypto_backend_secp256r1_private_key_to_raw \ nrf_crypto_backend_oberon_private_key_to_raw #define nrf_crypto_backend_secp256r1_public_key_from_raw \ nrf_crypto_backend_oberon_public_key_from_raw #define nrf_crypto_backend_secp256r1_public_key_to_raw \ nrf_crypto_backend_oberon_public_key_to_raw // Free is not required for oberon keys #define nrf_crypto_backend_secp256r1_private_key_free NULL #define nrf_crypto_backend_secp256r1_public_key_free NULL // Context is not used in oberon functions #define NRF_CRYPTO_BACKEND_SECP256R1_KEY_PAIR_GENERATE_CONTEXT_SIZE 0 #define NRF_CRYPTO_BACKEND_SECP256R1_PUBLIC_KEY_CALCULATE_CONTEXT_SIZE 0 // Dummy typedef for unused context typedef uint32_t nrf_crypto_backend_secp256r1_key_pair_generate_context_t; typedef uint32_t nrf_crypto_backend_secp256r1_public_key_calculate_context_t; #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_SECP256R1) #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_CURVE25519) #if NRF_MODULE_ENABLED(NRF_CRYPTO_ECC_CURVE25519) #error "More than one backend enabled for Curve25519."); #endif #define NRF_CRYPTO_ECC_CURVE25519_ENABLED 1 /** @internal @brief Structure holding private key for Oberon's Curve25519. */ typedef struct { nrf_crypto_internal_ecc_key_header_t header; /**< @internal @brief Common ECC key header. */ uint8_t key[32]; /**< @internal @brief Raw key in little endian order. */ } nrf_crypto_backend_curve25519_private_key_t; /** @internal @brief Structure holding public key for Oberon's Curve25519. */ typedef struct { nrf_crypto_internal_ecc_key_header_t header; /**< @internal @brief Common ECC key header. */ uint8_t key[32]; /**< @internal @brief Raw key in little endian order. */ } nrf_crypto_backend_curve25519_public_key_t; /** @internal See @ref nrf_crypto_backend_ecc_key_pair_generate_fn_t. */ ret_code_t nrf_crypto_backend_curve25519_key_pair_generate( void * p_context, void * p_private_key, void * p_public_key); /** @internal See @ref nrf_crypto_backend_ecc_public_key_calculate_fn_t. */ ret_code_t nrf_crypto_backend_curve25519_public_key_calculate( void * p_context, void const * p_private_key, void * p_public_key); // Common key conversion functions #define nrf_crypto_backend_curve25519_private_key_from_raw \ nrf_crypto_backend_oberon_private_key_from_raw #define nrf_crypto_backend_curve25519_private_key_to_raw \ nrf_crypto_backend_oberon_private_key_to_raw #define nrf_crypto_backend_curve25519_public_key_from_raw \ nrf_crypto_backend_oberon_public_key_from_raw #define nrf_crypto_backend_curve25519_public_key_to_raw \ nrf_crypto_backend_oberon_public_key_to_raw // Free is not required for oberon keys #define nrf_crypto_backend_curve25519_private_key_free NULL #define nrf_crypto_backend_curve25519_public_key_free NULL // Context is not used in oberon functions #define NRF_CRYPTO_BACKEND_CURVE25519_KEY_PAIR_GENERATE_CONTEXT_SIZE 0 #define NRF_CRYPTO_BACKEND_CURVE25519_PUBLIC_KEY_CALCULATE_CONTEXT_SIZE 0 // Dummy typedef for unused context typedef uint32_t nrf_crypto_backend_curve25519_key_pair_generate_context_t; typedef uint32_t nrf_crypto_backend_curve25519_public_key_calculate_context_t; #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_CURVE25519) #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_ED25519) #if NRF_MODULE_ENABLED(NRF_CRYPTO_ECC_ED25519) #error "More than one backend enabled for Ed25519."); #endif #define NRF_CRYPTO_ECC_ED25519_ENABLED 1 /** @internal @brief Structure holding private key for Oberon's Ed25519. */ typedef struct { nrf_crypto_internal_ecc_key_header_t header; /**< @internal @brief Common ECC key header. */ uint8_t private_part[32]; /**< @internal @brief Raw private key. */ uint8_t public_part[32]; /**< @internal @brief Raw public key. It is also required for Ed25519 signing. */ } nrf_crypto_backend_ed25519_private_key_t; /** @internal @brief Structure holding private key for Oberon's Ed25519. */ typedef struct { nrf_crypto_internal_ecc_key_header_t header; /**< @internal @brief Common ECC key header. */ uint8_t key[32]; /**< @internal @brief Raw key. */ } nrf_crypto_backend_ed25519_public_key_t; /** @internal See @ref nrf_crypto_backend_ecc_private_key_from_raw_fn_t. */ ret_code_t nrf_crypto_backend_ed25519_private_key_from_raw( void * p_private_key, uint8_t const * p_raw_data); /** @internal See @ref nrf_crypto_backend_ecc_key_pair_generate_fn_t. */ ret_code_t nrf_crypto_backend_ed25519_key_pair_generate( void * p_context, void * p_private_key, void * p_public_key); /** @internal See @ref nrf_crypto_backend_ecc_public_key_calculate_fn_t. */ ret_code_t nrf_crypto_backend_ed25519_public_key_calculate( void * p_context, void const * p_private_key, void * p_public_key); // Common key conversion functions #define nrf_crypto_backend_ed25519_private_key_to_raw \ nrf_crypto_backend_oberon_private_key_to_raw #define nrf_crypto_backend_ed25519_public_key_from_raw \ nrf_crypto_backend_oberon_public_key_from_raw #define nrf_crypto_backend_ed25519_public_key_to_raw \ nrf_crypto_backend_oberon_public_key_to_raw // Free is not required for oberon keys #define nrf_crypto_backend_ed25519_private_key_free NULL #define nrf_crypto_backend_ed25519_public_key_free NULL // Context is not used in oberon functions #define NRF_CRYPTO_BACKEND_ED25519_KEY_PAIR_GENERATE_CONTEXT_SIZE 0 #define NRF_CRYPTO_BACKEND_ED25519_PUBLIC_KEY_CALCULATE_CONTEXT_SIZE 0 // Dummy typedef for unused context typedef uint32_t nrf_crypto_backend_ed25519_key_pair_generate_context_t; typedef uint32_t nrf_crypto_backend_ed25519_public_key_calculate_context_t; #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_ED25519) #ifdef __cplusplus } #endif #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON) #endif // OBERON_BACKEND_ECC_H__