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- /**
- * 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)
- #include <string.h>
- #include "ssi_pal_types.h"
- #include "ssi_pal_mem.h"
- #include "sns_silib.h"
- #include "crys_rnd.h"
- #include "crys_ecpki_ecdsa.h"
- #include "crys_ecpki_error.h"
- #include "crys_kdf_error.h"
- #include "crys_hash_error.h"
- #include "nrf_crypto_error.h"
- #include "nrf_crypto_ecc_shared.h"
- #include "nrf_crypto_ecdsa_shared.h"
- #include "nrf_crypto_ecdsa.h"
- #include "cc310_backend_ecdsa.h"
- #include "cc310_backend_shared.h"
- #include "cc310_backend_mutex.h"
- #define CC310_SHA1_DIGEST_SIZE (160 / 8) /**< @internal @brief Digest size of SHA-1 */
- #define CC310_SHA224_DIGEST_SIZE (224 / 8) /**< @internal @brief Digest size of SHA-224 */
- #define CC310_SHA256_DIGEST_SIZE (256 / 8) /**< @internal @brief Digest size of SHA-256 */
- #define CC310_SHA384_DIGEST_SIZE (384 / 8) /**< @internal @brief Digest size of SHA-384 */
- #define CC310_SHA512_DIGEST_SIZE (512 / 8) /**< @internal @brief Digest size of SHA-512 */
- /** @internal @brief Returns enum value of @ref CRYS_ECPKI_HASH_OpMode_t based on provided hash size.
- *
- * @param[in] data_size Hash size
- * @return Value from @ref CRYS_ECPKI_HASH_OpMode_t or CRYS_ECPKI_HASH_OpModeLast if
- * cannot find implemented hash with provided size.
- */
- static CRYS_ECPKI_HASH_OpMode_t hash_mode_from_size(uint32_t data_size)
- {
- CRYS_ECPKI_HASH_OpMode_t hash_mode;
- switch (data_size)
- {
- case CC310_SHA1_DIGEST_SIZE:
- hash_mode = CRYS_ECPKI_AFTER_HASH_SHA1_mode;
- break;
- case CC310_SHA224_DIGEST_SIZE:
- hash_mode = CRYS_ECPKI_AFTER_HASH_SHA224_mode;
- break;
- case CC310_SHA256_DIGEST_SIZE:
- hash_mode = CRYS_ECPKI_AFTER_HASH_SHA256_mode;
- break;
- case CC310_SHA384_DIGEST_SIZE:
- hash_mode = CRYS_ECPKI_AFTER_HASH_SHA384_mode;
- break;
- case CC310_SHA512_DIGEST_SIZE:
- hash_mode = CRYS_ECPKI_AFTER_HASH_SHA512_mode;
- break;
- default:
- hash_mode = CRYS_ECPKI_HASH_OpModeLast;
- break;
- }
- return hash_mode;
- }
- ret_code_t nrf_crypto_backend_cc310_sign(
- void * p_context,
- void const * p_private_key,
- uint8_t const * p_data,
- size_t data_size,
- uint8_t * p_signature)
- {
- ret_code_t result;
- CRYSError_t crys_error;
- uint32_t signature_size;
- CRYS_ECPKI_HASH_OpMode_t hash_mode = hash_mode_from_size(data_size);
- bool mutex_locked;
- nrf_crypto_backend_cc310_sign_context_t * p_ctx =
- (nrf_crypto_backend_cc310_sign_context_t *)p_context;
- nrf_crypto_backend_cc310_ecc_private_key_t * p_prv =
- (nrf_crypto_backend_cc310_ecc_private_key_t *)p_private_key;
- nrf_crypto_ecc_curve_info_t const * p_info = p_prv->header.p_info;
- if (hash_mode == CRYS_ECPKI_HASH_OpModeLast)
- {
- return NRF_ERROR_CRYPTO_INPUT_LENGTH;
- }
- signature_size = p_info->raw_public_key_size;
- mutex_locked = cc310_backend_mutex_trylock();
- VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
- crys_error = CRYS_ECDSA_Sign(p_context,
- nrf_crypto_backend_cc310_rng,
- &p_ctx->user_context,
- &p_prv->private_key,
- hash_mode,
- (uint8_t *)p_data,
- data_size,
- p_signature,
- &signature_size);
- cc310_backend_mutex_unlock();
- result = nrf_crypto_backend_cc310_ecc_error_convert(crys_error);
- if (result == NRF_SUCCESS && signature_size != p_info->raw_public_key_size)
- {
- return NRF_ERROR_CRYPTO_INTERNAL;
- }
- return result;
- }
- ret_code_t nrf_crypto_backend_cc310_verify(
- void * p_context,
- void const * p_public_key,
- uint8_t const * p_data,
- size_t data_size,
- uint8_t const * p_signature)
- {
- ret_code_t result;
- CRYSError_t crys_error;
- CRYS_ECPKI_HASH_OpMode_t hash_mode = hash_mode_from_size(data_size);
- bool mutex_locked;
- nrf_crypto_backend_cc310_verify_context_t * p_ctx =
- (nrf_crypto_backend_cc310_verify_context_t *)p_context;
- nrf_crypto_backend_cc310_ecc_public_key_t * p_pub =
- (nrf_crypto_backend_cc310_ecc_public_key_t *)p_public_key;
- nrf_crypto_ecc_curve_info_t const * p_info = p_pub->header.p_info;
- result = nrf_crypto_backend_cc310_ecc_public_key_convert(p_pub, &p_ctx->key_build_temp_data);
- if (result != NRF_SUCCESS)
- {
- return result;
- }
- if (hash_mode == CRYS_ECPKI_HASH_OpModeLast)
- {
- return NRF_ERROR_CRYPTO_INPUT_LENGTH;
- }
- mutex_locked = cc310_backend_mutex_trylock();
- VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
- crys_error = CRYS_ECDSA_Verify(&p_ctx->user_context,
- &p_pub->key.cc310_public_key,
- hash_mode,
- (uint8_t *)p_signature,
- p_info->raw_public_key_size,
- (uint8_t *)p_data,
- data_size);
- 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)
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