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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_NRF_SW)
- #include "nrf_sw_backend_hash.h"
- #include "sha256.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"
- #if defined(NRF_CRYPTO_BACKEND_NRF_SW_HASH_LITTLE_ENDIAN_DIGEST_ENABLED)
- #error The configuration NRF_CRYPTO_BACKEND_NRF_SW_HASH_LITTLE_ENDIAN_DIGEST_ENABLED was removed in SDK 15.1.0. Please see release notes for details on removing this error message.
- #endif
- static ret_code_t nrf_sw_backend_hash_sha256_init(void * const p_context)
- {
- ret_code_t ret_val;
- // No parameter testing on this level.
- // This has been done on upper level.
- sha256_context_t * p_backend_context
- = &(((nrf_crypto_backend_hash_sha256_context_t *) p_context)->context);
- ret_val = sha256_init(p_backend_context);
- return ret_val;
- }
- static uint32_t nrf_sw_backend_hash_sha256_update(void * const p_context,
- uint8_t const * p_data,
- size_t len)
- {
- ret_code_t ret_val;
- // Limited parameter testing on this level.
- // This has been done on upper level.
- sha256_context_t * p_backend_context
- = &(((nrf_crypto_backend_hash_sha256_context_t * ) p_context)->context);
- ret_val = sha256_update(p_backend_context, p_data, len);
- return ret_val;
- }
- static uint32_t nrf_sw_backend_hash_sha256_finalize(void * const p_context,
- uint8_t * p_digest,
- size_t * const p_digest_len)
- {
- ret_code_t ret_val;
- // Limited parameter testing on this level.
- // This has been done on upper level.
- sha256_context_t * p_backend_context
- = &(((nrf_crypto_backend_hash_sha256_context_t * )p_context)->context);
- if (NRF_CRYPTO_HASH_SIZE_SHA256 > *p_digest_len)
- {
- return NRF_ERROR_CRYPTO_OUTPUT_LENGTH;
- }
- ret_val = sha256_final(p_backend_context, p_digest, false);
- if (ret_val != NRF_SUCCESS)
- {
- return ret_val;
- }
- *p_digest_len = NRF_CRYPTO_HASH_SIZE_SHA256;
- return NRF_SUCCESS;
- }
- const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha256_info =
- {
- .init_fn = nrf_sw_backend_hash_sha256_init,
- .update_fn = nrf_sw_backend_hash_sha256_update,
- .finalize_fn = nrf_sw_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) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_SW)
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