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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_OBERON)
- #include "nrf_log.h"
- #include "nrf_crypto_error.h"
- #include "nrf_crypto_types.h"
- #include "oberon_backend_hmac.h"
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA256)
- #define HMAC_SHA256_BLOCK_SIZE 64
- static ret_code_t oberon_backend_hmac_init_sha256(void * const p_context,
- uint8_t const * p_key,
- size_t key_size)
- {
- nrf_crypto_backend_oberon_hmac_sha256_context_t * p_ctx =
- (nrf_crypto_backend_oberon_hmac_sha256_context_t *)p_context;
- ocrypto_hmac_sha256_init(&p_ctx->oberon_ctx, p_key, key_size);
- return NRF_SUCCESS;
- }
- static ret_code_t oberon_backend_hmac_update_sha256(void * const p_context,
- uint8_t const * p_data,
- size_t size)
- {
- nrf_crypto_backend_oberon_hmac_sha256_context_t * p_ctx =
- (nrf_crypto_backend_oberon_hmac_sha256_context_t *)p_context;
- ocrypto_hmac_sha256_update(&p_ctx->oberon_ctx, p_data, size);
- return NRF_SUCCESS;
- }
- static ret_code_t oberon_backend_hmac_finalize_sha256(void * const p_context,
- uint8_t * p_digest,
- size_t * const p_size)
- {
- nrf_crypto_backend_oberon_hmac_sha256_context_t * const p_ctx =
- (nrf_crypto_backend_oberon_hmac_sha256_context_t *)p_context;
- ocrypto_hmac_sha256_final(&p_ctx->oberon_ctx, p_digest);
- // Assume operation was successful and update the digest size accordingly.
- *p_size = p_ctx->header.p_info->digest_size;
- return NRF_SUCCESS;
- }
- // Information structure for HMAC SHA256 using Oberon backend.
- const nrf_crypto_hmac_info_t g_nrf_crypto_hmac_sha256_info =
- {
- .init_fn = oberon_backend_hmac_init_sha256,
- .update_fn = oberon_backend_hmac_update_sha256,
- .finalize_fn = oberon_backend_hmac_finalize_sha256,
- .digest_size = NRF_CRYPTO_HASH_SIZE_SHA256,
- .context_size = sizeof(nrf_crypto_backend_oberon_hmac_sha256_context_t),
- .type = NRF_CRYPTO_HMAC_SHA256_TYPE
- };
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA256)
- #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA512)
- #define HMAC_SHA512_BLOCK_SIZE 128
- static ret_code_t oberon_backend_hmac_init_sha512(void * const p_context,
- uint8_t const * p_key,
- size_t key_size)
- {
- nrf_crypto_backend_oberon_hmac_sha512_context_t * p_ctx =
- (nrf_crypto_backend_oberon_hmac_sha512_context_t *)p_context;
- ocrypto_hmac_sha512_init(&p_ctx->oberon_ctx, p_key, key_size);
- return NRF_SUCCESS;
- }
- static ret_code_t oberon_backend_hmac_update_sha512(void * const p_context,
- uint8_t const * p_data,
- size_t size)
- {
- nrf_crypto_backend_oberon_hmac_sha512_context_t * p_ctx =
- (nrf_crypto_backend_oberon_hmac_sha512_context_t *)p_context;
- ocrypto_hmac_sha512_update(&p_ctx->oberon_ctx, p_data, size);
- return NRF_SUCCESS;
- }
- static ret_code_t oberon_backend_hmac_finalize_sha512(void * const p_context,
- uint8_t * p_digest,
- size_t * const p_size)
- {
- nrf_crypto_backend_oberon_hmac_sha512_context_t * const p_ctx =
- (nrf_crypto_backend_oberon_hmac_sha512_context_t *)p_context;
- ocrypto_hmac_sha512_final(&p_ctx->oberon_ctx, p_digest);
- // Assume operation was successful and update the digest size accordingly.
- *p_size = p_ctx->header.p_info->digest_size;
- return NRF_SUCCESS;
- }
- // Information structure for HMAC SHA512 using Oberon backend.
- const nrf_crypto_hmac_info_t g_nrf_crypto_hmac_sha512_info =
- {
- .init_fn = oberon_backend_hmac_init_sha512,
- .update_fn = oberon_backend_hmac_update_sha512,
- .finalize_fn = oberon_backend_hmac_finalize_sha512,
- .digest_size = NRF_CRYPTO_HASH_SIZE_SHA512,
- .context_size = sizeof(nrf_crypto_backend_oberon_hmac_sha512_context_t),
- .type = NRF_CRYPTO_HMAC_SHA512_TYPE
- };
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA512)
- #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON)
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