123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260 |
- /**
- * 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 "sdk_common.h"
- #include "nrf_log.h"
- #include "nrf_crypto_hmac_shared.h"
- #include "cc310_backend_hmac.h"
- #include "nrf_crypto_error.h"
- #include "nrf_crypto_types.h"
- #include <drivers/nrfx_common.h>
- #include "crys_hmac.h"
- #include "crys_hmac_defs.h"
- #include "crys_hmac_error.h"
- #include "crys_hash.h"
- #include "cc310_backend_mutex.h"
- #include "cc310_backend_shared.h"
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HMAC_SHA256) || \
- NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HMAC_SHA512)
- static ret_code_t result_get(CRYSError_t err_code)
- {
- ret_code_t ret_val;
- switch (err_code)
- {
- case CRYS_OK:
- ret_val = NRF_SUCCESS;
- break;
- case CRYS_HMAC_INVALID_USER_CONTEXT_POINTER_ERROR:
- ret_val = NRF_ERROR_CRYPTO_CONTEXT_NULL;
- break;
- case CRYS_HMAC_USER_CONTEXT_CORRUPTED_ERROR:
- ret_val = NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED;
- break;
- case CRYS_HMAC_DATA_IN_POINTER_INVALID_ERROR:
- case CRYS_HMAC_INVALID_KEY_POINTER_ERROR:
- ret_val = NRF_ERROR_CRYPTO_INPUT_NULL;
- break;
- case CRYS_HMAC_INVALID_RESULT_BUFFER_POINTER_ERROR:
- ret_val = NRF_ERROR_CRYPTO_OUTPUT_NULL;
- break;
- case CRYS_HMAC_ILLEGAL_PARAMS_ERROR:
- ret_val = NRF_ERROR_CRYPTO_INVALID_PARAM;
- break;
- case CRYS_HMAC_UNVALID_KEY_SIZE_ERROR:
- case CRYS_HMAC_DATA_SIZE_ILLEGAL:
- ret_val = NRF_ERROR_CRYPTO_INPUT_LENGTH;
- break;
- case CRYS_HMAC_ILLEGAL_OPERATION_MODE_ERROR:
- case CRYS_HMAC_LAST_BLOCK_ALREADY_PROCESSED_ERROR:
- case CRYS_HMAC_IS_NOT_SUPPORTED:
- case CRYS_HMAC_CTX_SIZES_ERROR:
- default:
- ret_val = NRF_ERROR_CRYPTO_INTERNAL;
- break;
- }
- return ret_val;
- }
- static ret_code_t cc310_backend_hmac_init(void * const p_context,
- uint8_t const * p_key,
- size_t key_size)
- {
- CRYSError_t err_code;
- CRYS_HASH_OperationMode_t hash_mode;
- ret_code_t ret_val;
- bool mutex_locked;
- nrf_crypto_backend_cc310_hmac_context_t * p_ctx =
- (nrf_crypto_backend_cc310_hmac_context_t *)p_context;
- switch (p_ctx->header.p_info->type)
- {
- case NRF_CRYPTO_HMAC_SHA256_TYPE:
- {
- hash_mode = CRYS_HASH_SHA256_mode;
- } break;
- case NRF_CRYPTO_HMAC_SHA512_TYPE:
- {
- hash_mode = CRYS_HASH_SHA512_mode;
- } break;
- default:
- {
- NRF_LOG_ERROR("Hash algorithm not supported by CC310 backend wrapper");
- return NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE;
- }
- }
- // Key in flash could lead to silently calculating wrong HMAC.
- VERIFY_TRUE(nrfx_is_in_ram(p_key), NRF_ERROR_CRYPTO_INPUT_LOCATION);
- mutex_locked = cc310_backend_mutex_trylock();
- VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
- err_code = CRYS_HMAC_Init(&p_ctx->crys_context, hash_mode, (uint8_t *)p_key, key_size);
- cc310_backend_mutex_unlock();
- ret_val = result_get(err_code);
- return ret_val;
- }
- static ret_code_t cc310_backend_hmac_update(void * const p_context,
- uint8_t const * p_data,
- size_t size)
- {
- CRYSError_t err_code;
- ret_code_t ret_val;
- bool mutex_locked;
- size_t cur_len;
- size_t len_left = size;
- uint8_t const * p_cur = p_data;
- nrf_crypto_backend_cc310_hmac_context_t * p_ctx =
- (nrf_crypto_backend_cc310_hmac_context_t *)p_context;
- // Data in flash could lead to silently calculating wrong HMAC.
- 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;
- err_code = CRYS_HMAC_Update(&p_ctx->crys_context, (uint8_t *)p_cur, cur_len);
- len_left -= cur_len;
- p_cur += cur_len;
- } while (err_code == CRYS_OK && len_left > 0);
- cc310_backend_mutex_unlock();
- ret_val = result_get(err_code);
- return ret_val;
- }
- static ret_code_t cc310_backend_hmac_finalize(void * const p_context,
- uint8_t * p_digest,
- size_t * const p_size)
- {
- CRYSError_t err_code;
- ret_code_t ret_val;
- bool mutex_locked;
- CRYS_HASH_Result_t * p_int_digest = (CRYS_HASH_Result_t *)p_digest;
- nrf_crypto_backend_cc310_hmac_context_t * p_ctx =
- (nrf_crypto_backend_cc310_hmac_context_t *)p_context;
- // Set the digest length to 0 so that this is used in case of any error.
- *p_size = 0;
- mutex_locked = cc310_backend_mutex_trylock();
- VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
- err_code = CRYS_HMAC_Finish(&p_ctx->crys_context, *p_int_digest);
- cc310_backend_mutex_unlock();
- ret_val = result_get(err_code);
- if (err_code != NRF_SUCCESS)
- {
- return ret_val;
- }
- *p_size = p_ctx->header.p_info->digest_size;
- return ret_val;
- }
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HMAC_SHA256)
- // Information structure for HMAC SHA256 using CC310 backend.
- const nrf_crypto_hmac_info_t g_nrf_crypto_hmac_sha256_info =
- {
- .init_fn = cc310_backend_hmac_init,
- .update_fn = cc310_backend_hmac_update,
- .finalize_fn = cc310_backend_hmac_finalize,
- .digest_size = NRF_CRYPTO_HASH_SIZE_SHA256,
- .context_size = sizeof(nrf_crypto_backend_hmac_sha256_context_t),
- .type = NRF_CRYPTO_HMAC_SHA256_TYPE,
- };
- #endif // NRF_CRYPTO_BACKEND_CC310_HMAC_SHA256_ENABLED
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HMAC_SHA512)
- // Information structure for HMAC SHA512 using CC310 backend.
- const nrf_crypto_hmac_info_t g_nrf_crypto_hmac_sha512_info =
- {
- .init_fn = cc310_backend_hmac_init,
- .update_fn = cc310_backend_hmac_update,
- .finalize_fn = cc310_backend_hmac_finalize,
- .digest_size = NRF_CRYPTO_HASH_SIZE_SHA512,
- .context_size = sizeof(nrf_crypto_backend_hmac_sha512_context_t),
- .type = NRF_CRYPTO_HMAC_SHA512_TYPE,
- };
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HMAC_SHA512)
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HMAC_SHA256) || NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_HMAC_SHA512)
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
|