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xiaozhengsheng
303
components/libraries/crypto/backend/cc310/cc310_backend_hash.c
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303
components/libraries/crypto/backend/cc310/cc310_backend_hash.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_common.h"
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#if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
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#include "nrf.h"
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#include "cc310_backend_hash.h"
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#include "crys_hash.h"
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#include "crys_hash_error.h"
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#include "nrf_crypto_init.h"
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#include "nrf_crypto_types.h"
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#include "nrf_crypto_error.h"
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#include "nrf_crypto_hash_shared.h"
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#include "sdk_macros.h"
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#include "nrf_log.h"
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#include "nrf_assert.h"
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#include "cc310_backend_mutex.h"
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#include "cc310_backend_shared.h"
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#include <drivers/nrfx_common.h>
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#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256) || \
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NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
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static ret_code_t hash_result_get(CRYSError_t error)
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{
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ret_code_t ret_val;
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switch (error)
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{
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case CRYS_OK:
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ret_val = NRF_SUCCESS;
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break;
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case CRYS_HASH_INVALID_USER_CONTEXT_POINTER_ERROR:
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ret_val = NRF_ERROR_CRYPTO_CONTEXT_NULL;
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break;
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case CRYS_HASH_ILLEGAL_OPERATION_MODE_ERROR:
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ret_val = NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE;
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break;
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case CRYS_HASH_USER_CONTEXT_CORRUPTED_ERROR:
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ret_val = NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED;
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break;
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// May be added to specialized errors for hash.
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case CRYS_HASH_LAST_BLOCK_ALREADY_PROCESSED_ERROR:
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ret_val = NRF_ERROR_CRYPTO_INTERNAL;
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break;
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case CRYS_HASH_IS_NOT_SUPPORTED:
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ret_val = NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE;
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break;
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default:
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ret_val = NRF_ERROR_CRYPTO_INTERNAL;
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break;
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}
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return ret_val;
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}
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#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256)
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static ret_code_t cc310_backend_hash_sha256_init(void * const p_context)
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{
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uint32_t ret_val;
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CRYSError_t crys_error;
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CRYS_HASH_OperationMode_t hash_mode = CRYS_HASH_SHA256_mode;
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// No parameter testing on this level.
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// This has been done on upper level.
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CRYS_HASHUserContext_t * const p_backend_context
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= &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context);
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crys_error = CRYS_HASH_Init(p_backend_context, hash_mode);
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ret_val = hash_result_get(crys_error);
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return ret_val;
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}
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static ret_code_t cc310_backend_hash_sha256_update(void * const p_context,
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uint8_t const * p_data,
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size_t size)
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{
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ret_code_t ret_val;
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CRYSError_t crys_error;
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bool mutex_locked;
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size_t cur_len;
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size_t len_left = size;
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uint8_t const * p_cur = p_data;
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// Limited parameter testing on this level.
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// This has been done on upper level.
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CRYS_HASHUserContext_t * const p_backend_context
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= &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context);
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// Data in flash could lead to silently calculating wrong Hash.
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VERIFY_TRUE(nrfx_is_in_ram(p_data), NRF_ERROR_CRYPTO_INPUT_LOCATION);
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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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// If the input is larger than CC310_MAX_LENGTH_DMA_OPERATIONS, split into smaller
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do
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{
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cur_len = (len_left > CC310_MAX_LENGTH_DMA_OPERATIONS) ?
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CC310_MAX_LENGTH_DMA_OPERATIONS : len_left;
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crys_error = CRYS_HASH_Update(p_backend_context, (uint8_t *)p_cur, cur_len);
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len_left -= cur_len;
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p_cur += cur_len;
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} while (crys_error == CRYS_OK && len_left > 0);
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cc310_backend_mutex_unlock();
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ret_val = hash_result_get(crys_error);
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return ret_val;
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}
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static ret_code_t cc310_backend_hash_sha256_finalize(void * const p_context,
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uint8_t * p_digest,
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size_t * const p_digest_size)
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{
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ret_code_t ret_val;
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CRYSError_t crys_error;
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bool mutex_locked;
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CRYS_HASH_Result_t * p_int_digest = (CRYS_HASH_Result_t *)p_digest;
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// Limited parameter testing on this level.
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// This has been done on upper level.
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CRYS_HASHUserContext_t * const p_backend_context
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= &(((nrf_crypto_backend_hash_sha256_context_t * )p_context)->context);
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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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// Do the hash finalize calculation
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crys_error = CRYS_HASH_Finish(p_backend_context, *p_int_digest);
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cc310_backend_mutex_unlock();
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ret_val = hash_result_get(crys_error);
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if (ret_val == NRF_SUCCESS)
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{
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*p_digest_size = NRF_CRYPTO_HASH_SIZE_SHA256;
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}
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return ret_val;
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}
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const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha256_info =
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{
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.init_fn = cc310_backend_hash_sha256_init,
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.update_fn = cc310_backend_hash_sha256_update,
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.finalize_fn = cc310_backend_hash_sha256_finalize,
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.digest_size = NRF_CRYPTO_HASH_SIZE_SHA256,
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.context_size = sizeof(nrf_crypto_backend_hash_sha256_context_t),
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.hash_mode = NRF_CRYPTO_HASH_MODE_SHA256
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};
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#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256)
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#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
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// SHA-512 does not use CC310 hardware and therefore will not use a mutex lock
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static ret_code_t cc310_backend_hash_sha512_init(void * p_context)
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{
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uint32_t ret_val;
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CRYSError_t crys_error;
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CRYS_HASH_OperationMode_t hash_mode = CRYS_HASH_SHA512_mode;
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// No parameter testing on this level.
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// This has been done on upper level.
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CRYS_HASHUserContext_t * const p_backend_context
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= &(((nrf_crypto_backend_hash_sha512_context_t * ) p_context)->context);
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crys_error = CRYS_HASH_Init(p_backend_context, hash_mode);
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ret_val = hash_result_get(crys_error);
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return ret_val;
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}
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static ret_code_t cc310_backend_hash_sha512_update(void * const p_context,
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uint8_t const * p_data,
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size_t size)
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{
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ret_code_t ret_val;
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CRYSError_t crys_error;
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// Limited parameter testing on this level.
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// This has been done on upper level.
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CRYS_HASHUserContext_t * const p_backend_context
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= &(((nrf_crypto_backend_hash_sha512_context_t *)p_context)->context);
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// Data in flash could lead to silently calculating wrong Hash.
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VERIFY_TRUE(nrfx_is_in_ram(p_data), NRF_ERROR_CRYPTO_INPUT_LOCATION);
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crys_error = CRYS_HASH_Update(p_backend_context, (uint8_t *)p_data, size);
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ret_val = hash_result_get(crys_error);
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return ret_val;
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}
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static ret_code_t cc310_backend_hash_sha512_finalize(void * const p_context,
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uint8_t * p_digest,
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size_t * const p_digest_size)
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{
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ret_code_t ret_val;
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CRYSError_t crys_error;
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CRYS_HASH_Result_t * p_int_digest = (CRYS_HASH_Result_t *)p_digest;
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// Limited parameter testing on this level.
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// This has been done on upper level.
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CRYS_HASHUserContext_t * const p_backend_context
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= &(((nrf_crypto_backend_hash_sha512_context_t *) p_context)->context);
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crys_error = CRYS_HASH_Finish(p_backend_context, *p_int_digest);
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ret_val = hash_result_get(crys_error);
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if (ret_val == NRF_SUCCESS)
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{
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*p_digest_size = NRF_CRYPTO_HASH_SIZE_SHA512;
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}
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return ret_val;
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}
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const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha512_info =
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{
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.init_fn = cc310_backend_hash_sha512_init,
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.update_fn = cc310_backend_hash_sha512_update,
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.finalize_fn = cc310_backend_hash_sha512_finalize,
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.digest_size = NRF_CRYPTO_HASH_SIZE_SHA512,
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.context_size = sizeof(nrf_crypto_backend_hash_sha512_context_t),
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.hash_mode = NRF_CRYPTO_HASH_MODE_SHA512
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};
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#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
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#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA256) || NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HASH_SHA512)
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#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
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