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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310_bl/cc310_bl_backend_hash.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310_bl/cc310_bl_backend_hash.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310_bl/cc310_bl_backend_hash.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310_bl/cc310_bl_backend_hash.c new file mode 100644 index 0000000..59010f5 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310_bl/cc310_bl_backend_hash.c @@ -0,0 +1,281 @@ +/** + * Copyright (c) 2018 - 2018, 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_BL) + +#include "nrf.h" +#include "cc310_bl_backend_hash.h" +#include "cc310_bl_backend_shared.h" +#include "cc310_backend_mutex.h" +#include "cc310_backend_shared.h" +#include "nrf_cc310_bl_hash_sha256.h" +#include "crys_hash_error.h" +#include "nrf_crypto_init.h" +#include "nrf_crypto_types.h" +#include "nrf_crypto_error.h" +#include "nrf_crypto_shared.h" +#include "nrf_crypto_hash_shared.h" +#include "sdk_macros.h" +#include "nrf_log.h" +#include "nrf_assert.h" +#include <drivers/nrfx_common.h> + + +#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_HASH_SHA256) + +#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER) + +__ALIGN(4) static uint8_t m_hash_buffer[NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_SIZE]; + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER) + + +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; +} + + +static ret_code_t cc310_bl_backend_hash_sha256_init(void * const p_context) +{ + uint32_t ret_val; + CRYSError_t crys_error; + + // Limited parameter testing on this level. + // This has been done on upper level. + + nrf_cc310_bl_hash_context_sha256_t * const p_backend_context + = &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context); + + crys_error = nrf_cc310_bl_hash_sha256_init(p_backend_context); + + ret_val = hash_result_get(crys_error); + + return ret_val; +} + + +static uint32_t cc310_bl_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; + uint32_t cur_size; + uint32_t size_left; + uint8_t * p_cur; + bool mutex_locked; + + // Limited parameter testing on this level. + // This has been done on upper level. + + nrf_cc310_bl_hash_context_sha256_t * const p_backend_context + = &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context); + + p_cur = (uint8_t *)p_data; + size_left = size; + + mutex_locked = cc310_backend_mutex_trylock(); + VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY); + + cc310_bl_backend_enable(); + +#if defined (NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_ENABLED) && (NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_ENABLED == 1) + + do + { + // Copy a block from FLASH to RAM for use in CC310 + cur_size = (size_left > NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_SIZE) ? + NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_SIZE : size_left; + + // Copy from FLASH to ram + memcpy(m_hash_buffer, p_cur, cur_size); + + // Update the hash with current input. + crys_error = nrf_cc310_bl_hash_sha256_update(p_backend_context, m_hash_buffer, cur_size); + + size_left -= cur_size; + p_cur += cur_size; + + } while(crys_error == SASI_OK && size_left > 0); + +#elif defined(NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_ENABLED) && (NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_ENABLED == 0) + + // Verify that the data is in RAM (required for CC310 hashing) + VERIFY_TRUE(nrfx_is_in_ram(p_data), NRF_ERROR_CRYPTO_INPUT_LOCATION); + + do + { + // Get the largest block that can sent to the CC310 through DMA + cur_size = (size_left > CC310_MAX_LENGTH_DMA_OPERATIONS) ? + CC310_MAX_LENGTH_DMA_OPERATIONS : size_left; + + crys_error = nrf_cc310_bl_hash_sha256_update(p_backend_context, p_cur, cur_size); + + size_left -= cur_size; + p_cur += cur_size; + } while(crys_error == SASI_OK && size_left > 0); + +#else + + UNUSED_PARAMETER(p_backend_context); + UNUSED_PARAMETER(cur_size); + UNUSED_PARAMETER(size_left); + UNUSED_PARAMETER(p_cur); + + #warning NRF_CRYPTO_BACKEND_CC310_BL_HASH_AUTOMATIC_RAM_BUFFER_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?). + +#endif + + cc310_bl_backend_disable(); + + cc310_backend_mutex_unlock(); + + ret_val = hash_result_get(crys_error); + + return ret_val; +} + + +static uint32_t cc310_bl_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; + + // Limited parameter testing on this level. + // This has been done on upper level. + + nrf_cc310_bl_hash_context_sha256_t * const p_backend_context + = &(((nrf_crypto_backend_hash_sha256_context_t * )p_context)->context); + + nrf_cc310_bl_hash_digest_sha256_t * p_int_digest + = (nrf_cc310_bl_hash_digest_sha256_t *)p_digest; + + if (NRF_CRYPTO_HASH_SIZE_SHA256 > *p_digest_size) + { + return NRF_ERROR_CRYPTO_OUTPUT_LENGTH; + } + + mutex_locked = cc310_backend_mutex_trylock(); + VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY); + + cc310_bl_backend_enable(); + + // Do the hash finalize calculation + crys_error = nrf_cc310_bl_hash_sha256_finalize(p_backend_context, p_int_digest); + + cc310_bl_backend_disable(); + + cc310_backend_mutex_unlock(); + + ret_val = hash_result_get(crys_error); + + if (ret_val == NRF_SUCCESS) + { + *p_digest_size = NRF_CRYPTO_HASH_SIZE_SHA256; + } + +#if defined(NRF_CRYPTO_BACKEND_CC310_BL_HASH_LITTLE_ENDIAN_DIGEST_ENABLED) && (NRF_CRYPTO_BACKEND_CC310_BL_HASH_LITTLE_ENDIAN_DIGEST_ENABLED == 1) + + nrf_crypto_internal_swap_endian_in_place(p_digest, NRF_CRYPTO_HASH_SIZE_SHA256); + +#elif defined(NRF_CRYPTO_BACKEND_CC310_BL_HASH_LITTLE_ENDIAN_DIGEST_ENABLED) && (NRF_CRYPTO_BACKEND_CC310_BL_HASH_LITTLE_ENDIAN_DIGEST_ENABLED == 0) + + // Do nothing + +#else + + #warning NRF_CRYPTO_BACKEND_CC310_BL_HASH_LITTLE_ENDIAN_DIGEST_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?). + +#endif + + return ret_val; +} + +const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha256_info = +{ + .init_fn = cc310_bl_backend_hash_sha256_init, + .update_fn = cc310_bl_backend_hash_sha256_update, + .finalize_fn = cc310_bl_backend_hash_sha256_finalize, + .digest_size = NRF_CRYPTO_HASH_SIZE_SHA256, + .hash_mode = NRF_CRYPTO_HASH_MODE_SHA256 +}; + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_HASH_SHA256) + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL) |