216 lines
7.5 KiB
C
216 lines
7.5 KiB
C
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/**
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* Copyright (c) 2018 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "sdk_config.h"
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#include "nordic_common.h"
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#if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
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#include <string.h>
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#include "ssi_pal_types.h"
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#include "ssi_pal_mem.h"
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#include "sns_silib.h"
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#include "crys_rnd.h"
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#include "crys_ecpki_ecdsa.h"
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#include "crys_ecpki_error.h"
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#include "crys_kdf_error.h"
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#include "crys_hash_error.h"
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#include "nrf_crypto_error.h"
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#include "nrf_crypto_ecc_shared.h"
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#include "nrf_crypto_ecdsa_shared.h"
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#include "nrf_crypto_ecdsa.h"
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#include "cc310_backend_ecdsa.h"
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#include "cc310_backend_shared.h"
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#include "cc310_backend_mutex.h"
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#define CC310_SHA1_DIGEST_SIZE (160 / 8) /**< @internal @brief Digest size of SHA-1 */
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#define CC310_SHA224_DIGEST_SIZE (224 / 8) /**< @internal @brief Digest size of SHA-224 */
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#define CC310_SHA256_DIGEST_SIZE (256 / 8) /**< @internal @brief Digest size of SHA-256 */
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#define CC310_SHA384_DIGEST_SIZE (384 / 8) /**< @internal @brief Digest size of SHA-384 */
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#define CC310_SHA512_DIGEST_SIZE (512 / 8) /**< @internal @brief Digest size of SHA-512 */
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/** @internal @brief Returns enum value of @ref CRYS_ECPKI_HASH_OpMode_t based on provided hash size.
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*
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* @param[in] data_size Hash size
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* @return Value from @ref CRYS_ECPKI_HASH_OpMode_t or CRYS_ECPKI_HASH_OpModeLast if
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* cannot find implemented hash with provided size.
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*/
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static CRYS_ECPKI_HASH_OpMode_t hash_mode_from_size(uint32_t data_size)
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{
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CRYS_ECPKI_HASH_OpMode_t hash_mode;
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switch (data_size)
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{
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case CC310_SHA1_DIGEST_SIZE:
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hash_mode = CRYS_ECPKI_AFTER_HASH_SHA1_mode;
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break;
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case CC310_SHA224_DIGEST_SIZE:
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hash_mode = CRYS_ECPKI_AFTER_HASH_SHA224_mode;
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break;
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case CC310_SHA256_DIGEST_SIZE:
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hash_mode = CRYS_ECPKI_AFTER_HASH_SHA256_mode;
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break;
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case CC310_SHA384_DIGEST_SIZE:
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hash_mode = CRYS_ECPKI_AFTER_HASH_SHA384_mode;
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break;
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case CC310_SHA512_DIGEST_SIZE:
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hash_mode = CRYS_ECPKI_AFTER_HASH_SHA512_mode;
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break;
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default:
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hash_mode = CRYS_ECPKI_HASH_OpModeLast;
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break;
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}
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return hash_mode;
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}
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ret_code_t nrf_crypto_backend_cc310_sign(
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void * p_context,
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void const * p_private_key,
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uint8_t const * p_data,
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size_t data_size,
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uint8_t * p_signature)
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{
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ret_code_t result;
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CRYSError_t crys_error;
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uint32_t signature_size;
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CRYS_ECPKI_HASH_OpMode_t hash_mode = hash_mode_from_size(data_size);
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bool mutex_locked;
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nrf_crypto_backend_cc310_sign_context_t * p_ctx =
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(nrf_crypto_backend_cc310_sign_context_t *)p_context;
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nrf_crypto_backend_cc310_ecc_private_key_t * p_prv =
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(nrf_crypto_backend_cc310_ecc_private_key_t *)p_private_key;
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nrf_crypto_ecc_curve_info_t const * p_info = p_prv->header.p_info;
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if (hash_mode == CRYS_ECPKI_HASH_OpModeLast)
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{
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return NRF_ERROR_CRYPTO_INPUT_LENGTH;
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}
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signature_size = p_info->raw_public_key_size;
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mutex_locked = cc310_backend_mutex_trylock();
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VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
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crys_error = CRYS_ECDSA_Sign(p_context,
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nrf_crypto_backend_cc310_rng,
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&p_ctx->user_context,
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&p_prv->private_key,
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hash_mode,
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(uint8_t *)p_data,
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data_size,
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p_signature,
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&signature_size);
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cc310_backend_mutex_unlock();
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result = nrf_crypto_backend_cc310_ecc_error_convert(crys_error);
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if (result == NRF_SUCCESS && signature_size != p_info->raw_public_key_size)
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{
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return NRF_ERROR_CRYPTO_INTERNAL;
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}
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return result;
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}
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ret_code_t nrf_crypto_backend_cc310_verify(
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void * p_context,
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void const * p_public_key,
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uint8_t const * p_data,
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size_t data_size,
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uint8_t const * p_signature)
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{
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ret_code_t result;
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CRYSError_t crys_error;
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CRYS_ECPKI_HASH_OpMode_t hash_mode = hash_mode_from_size(data_size);
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bool mutex_locked;
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nrf_crypto_backend_cc310_verify_context_t * p_ctx =
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(nrf_crypto_backend_cc310_verify_context_t *)p_context;
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nrf_crypto_backend_cc310_ecc_public_key_t * p_pub =
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(nrf_crypto_backend_cc310_ecc_public_key_t *)p_public_key;
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nrf_crypto_ecc_curve_info_t const * p_info = p_pub->header.p_info;
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result = nrf_crypto_backend_cc310_ecc_public_key_convert(p_pub, &p_ctx->key_build_temp_data);
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if (result != NRF_SUCCESS)
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{
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return result;
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}
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if (hash_mode == CRYS_ECPKI_HASH_OpModeLast)
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{
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return NRF_ERROR_CRYPTO_INPUT_LENGTH;
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}
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mutex_locked = cc310_backend_mutex_trylock();
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VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
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crys_error = CRYS_ECDSA_Verify(&p_ctx->user_context,
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&p_pub->key.cc310_public_key,
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hash_mode,
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(uint8_t *)p_signature,
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p_info->raw_public_key_size,
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(uint8_t *)p_data,
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data_size);
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cc310_backend_mutex_unlock();
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result = nrf_crypto_backend_cc310_ecc_error_convert(crys_error);
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return result;
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}
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#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
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