/** * 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. * */ #include "sdk_config.h" #include "nordic_common.h" #if NRF_MODULE_ENABLED(NRF_CRYPTO) && \ NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) && \ NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_ECC_ED25519) #include #include #include #include "nrf_crypto_ecc.h" #include "nrf_crypto_rng.h" #include "nrf_crypto_eddsa.h" #include "cc310_backend_ecc.h" #include "cc310_backend_shared.h" #include "cc310_backend_mutex.h" #include "crys_ec_edw_api.h" #include "crys_ec_mont_edw_error.h" ret_code_t nrf_crypto_backend_ed25519_sign( void * p_context, nrf_crypto_ecc_private_key_t const * p_private_key, uint8_t const * p_message, size_t message_size, uint8_t * p_signature) { ret_code_t result; CRYSError_t crys_error; bool mutex_locked; size_t signature_size = 2 * CRYS_ECEDW_ORD_SIZE_IN_BYTES; nrf_crypto_backend_cc310_ed25519_context_t * p_ctx = (nrf_crypto_backend_cc310_ed25519_context_t *)p_context; nrf_crypto_backend_ed25519_private_key_t * p_prv = (nrf_crypto_backend_ed25519_private_key_t *)p_private_key; mutex_locked = cc310_backend_mutex_trylock(); VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY); crys_error = CRYS_ECEDW_Sign(p_signature, &signature_size, p_message, message_size, p_prv->key, sizeof(p_prv->key), &p_ctx->temp_data); cc310_backend_mutex_unlock(); result = nrf_crypto_backend_cc310_ecc_error_convert(crys_error); return result; } ret_code_t nrf_crypto_backend_ed25519_verify( void * p_context, nrf_crypto_ecc_public_key_t const * p_public_key, uint8_t const * p_message, size_t message_size, uint8_t const * p_signature) { ret_code_t result; CRYSError_t crys_error; bool mutex_locked; nrf_crypto_backend_cc310_ed25519_context_t * p_ctx = (nrf_crypto_backend_cc310_ed25519_context_t *)p_context; nrf_crypto_backend_ed25519_public_key_t * p_pub = (nrf_crypto_backend_ed25519_public_key_t *)p_public_key; mutex_locked = cc310_backend_mutex_trylock(); VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY); crys_error = CRYS_ECEDW_Verify(p_signature, 2 * CRYS_ECEDW_ORD_SIZE_IN_BYTES, p_pub->key, CRYS_ECEDW_ORD_SIZE_IN_BYTES, (uint8_t *)p_message, message_size, &p_ctx->temp_data); cc310_backend_mutex_unlock(); result = nrf_crypto_backend_cc310_ecc_error_convert(crys_error); return result; } #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_ECC_ED25519)