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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_common.h"
- #if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
- #include "nrf.h"
- #include "cc310_backend_hash.h"
- #include "crys_hash.h"
- #include "crys_hash_error.h"
- #include "nrf_crypto_init.h"
- #include "nrf_crypto_types.h"
- #include "nrf_crypto_error.h"
- #include "nrf_crypto_hash_shared.h"
- #include "sdk_macros.h"
- #include "nrf_log.h"
- #include "nrf_assert.h"
- #include "cc310_backend_mutex.h"
- #include "cc310_backend_shared.h"
- #include <drivers/nrfx_common.h>
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256) || \
- NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
- static ret_code_t hash_result_get(CRYSError_t error)
- {
- ret_code_t ret_val;
- switch (error)
- {
- case CRYS_OK:
- ret_val = NRF_SUCCESS;
- break;
- case CRYS_HASH_INVALID_USER_CONTEXT_POINTER_ERROR:
- ret_val = NRF_ERROR_CRYPTO_CONTEXT_NULL;
- break;
- case CRYS_HASH_ILLEGAL_OPERATION_MODE_ERROR:
- ret_val = NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE;
- break;
- case CRYS_HASH_USER_CONTEXT_CORRUPTED_ERROR:
- ret_val = NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED;
- break;
- // May be added to specialized errors for hash.
- case CRYS_HASH_LAST_BLOCK_ALREADY_PROCESSED_ERROR:
- ret_val = NRF_ERROR_CRYPTO_INTERNAL;
- break;
- case CRYS_HASH_IS_NOT_SUPPORTED:
- ret_val = NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE;
- break;
- default:
- ret_val = NRF_ERROR_CRYPTO_INTERNAL;
- break;
- }
- return ret_val;
- }
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256)
- static ret_code_t cc310_backend_hash_sha256_init(void * const p_context)
- {
- uint32_t ret_val;
- CRYSError_t crys_error;
- CRYS_HASH_OperationMode_t hash_mode = CRYS_HASH_SHA256_mode;
- // No parameter testing on this level.
- // This has been done on upper level.
- CRYS_HASHUserContext_t * const p_backend_context
- = &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context);
- crys_error = CRYS_HASH_Init(p_backend_context, hash_mode);
- ret_val = hash_result_get(crys_error);
- return ret_val;
- }
- static ret_code_t cc310_backend_hash_sha256_update(void * const p_context,
- uint8_t const * p_data,
- size_t size)
- {
- ret_code_t ret_val;
- CRYSError_t crys_error;
- bool mutex_locked;
- size_t cur_len;
- size_t len_left = size;
- uint8_t const * p_cur = p_data;
- // Limited parameter testing on this level.
- // This has been done on upper level.
- CRYS_HASHUserContext_t * const p_backend_context
- = &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context);
- // Data in flash could lead to silently calculating wrong Hash.
- VERIFY_TRUE(nrfx_is_in_ram(p_data), NRF_ERROR_CRYPTO_INPUT_LOCATION);
- mutex_locked = cc310_backend_mutex_trylock();
- VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
- // If the input is larger than CC310_MAX_LENGTH_DMA_OPERATIONS, split into smaller
- do
- {
- cur_len = (len_left > CC310_MAX_LENGTH_DMA_OPERATIONS) ?
- CC310_MAX_LENGTH_DMA_OPERATIONS : len_left;
- crys_error = CRYS_HASH_Update(p_backend_context, (uint8_t *)p_cur, cur_len);
- len_left -= cur_len;
- p_cur += cur_len;
- } while (crys_error == CRYS_OK && len_left > 0);
- cc310_backend_mutex_unlock();
- ret_val = hash_result_get(crys_error);
- return ret_val;
- }
- static ret_code_t cc310_backend_hash_sha256_finalize(void * const p_context,
- uint8_t * p_digest,
- size_t * const p_digest_size)
- {
- ret_code_t ret_val;
- CRYSError_t crys_error;
- bool mutex_locked;
- CRYS_HASH_Result_t * p_int_digest = (CRYS_HASH_Result_t *)p_digest;
- // Limited parameter testing on this level.
- // This has been done on upper level.
- CRYS_HASHUserContext_t * const p_backend_context
- = &(((nrf_crypto_backend_hash_sha256_context_t * )p_context)->context);
- mutex_locked = cc310_backend_mutex_trylock();
- VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
- // Do the hash finalize calculation
- crys_error = CRYS_HASH_Finish(p_backend_context, *p_int_digest);
- cc310_backend_mutex_unlock();
- ret_val = hash_result_get(crys_error);
- if (ret_val == NRF_SUCCESS)
- {
- *p_digest_size = NRF_CRYPTO_HASH_SIZE_SHA256;
- }
- return ret_val;
- }
- const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha256_info =
- {
- .init_fn = cc310_backend_hash_sha256_init,
- .update_fn = cc310_backend_hash_sha256_update,
- .finalize_fn = cc310_backend_hash_sha256_finalize,
- .digest_size = NRF_CRYPTO_HASH_SIZE_SHA256,
- .context_size = sizeof(nrf_crypto_backend_hash_sha256_context_t),
- .hash_mode = NRF_CRYPTO_HASH_MODE_SHA256
- };
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256)
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
- // SHA-512 does not use CC310 hardware and therefore will not use a mutex lock
- static ret_code_t cc310_backend_hash_sha512_init(void * p_context)
- {
- uint32_t ret_val;
- CRYSError_t crys_error;
- CRYS_HASH_OperationMode_t hash_mode = CRYS_HASH_SHA512_mode;
- // No parameter testing on this level.
- // This has been done on upper level.
- CRYS_HASHUserContext_t * const p_backend_context
- = &(((nrf_crypto_backend_hash_sha512_context_t * ) p_context)->context);
- crys_error = CRYS_HASH_Init(p_backend_context, hash_mode);
- ret_val = hash_result_get(crys_error);
- return ret_val;
- }
- static ret_code_t cc310_backend_hash_sha512_update(void * const p_context,
- uint8_t const * p_data,
- size_t size)
- {
- ret_code_t ret_val;
- CRYSError_t crys_error;
- // Limited parameter testing on this level.
- // This has been done on upper level.
- CRYS_HASHUserContext_t * const p_backend_context
- = &(((nrf_crypto_backend_hash_sha512_context_t *)p_context)->context);
- // Data in flash could lead to silently calculating wrong Hash.
- VERIFY_TRUE(nrfx_is_in_ram(p_data), NRF_ERROR_CRYPTO_INPUT_LOCATION);
- crys_error = CRYS_HASH_Update(p_backend_context, (uint8_t *)p_data, size);
- ret_val = hash_result_get(crys_error);
- return ret_val;
- }
- static ret_code_t cc310_backend_hash_sha512_finalize(void * const p_context,
- uint8_t * p_digest,
- size_t * const p_digest_size)
- {
- ret_code_t ret_val;
- CRYSError_t crys_error;
- CRYS_HASH_Result_t * p_int_digest = (CRYS_HASH_Result_t *)p_digest;
- // Limited parameter testing on this level.
- // This has been done on upper level.
- CRYS_HASHUserContext_t * const p_backend_context
- = &(((nrf_crypto_backend_hash_sha512_context_t *) p_context)->context);
- crys_error = CRYS_HASH_Finish(p_backend_context, *p_int_digest);
- ret_val = hash_result_get(crys_error);
- if (ret_val == NRF_SUCCESS)
- {
- *p_digest_size = NRF_CRYPTO_HASH_SIZE_SHA512;
- }
- return ret_val;
- }
- const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha512_info =
- {
- .init_fn = cc310_backend_hash_sha512_init,
- .update_fn = cc310_backend_hash_sha512_update,
- .finalize_fn = cc310_backend_hash_sha512_finalize,
- .digest_size = NRF_CRYPTO_HASH_SIZE_SHA512,
- .context_size = sizeof(nrf_crypto_backend_hash_sha512_context_t),
- .hash_mode = NRF_CRYPTO_HASH_MODE_SHA512
- };
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256) || NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
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