/**
 * Copyright (c) 2018 - 2021, 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
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 * 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.
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 */

#include "sdk_common.h"

#if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MBEDTLS)

#include "mbedtls_backend_hash.h"
#include "nrf_crypto_init.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"

/*lint -save -e????*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif

#include "mbedtls/md.h"
#include "mbedtls/sha256.h"
#include "mbedtls/sha512.h"
/*lint -restore*/

#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MBEDTLS_HASH_SHA256)

static ret_code_t mbedtls_backend_hash_sha256_init(void * const p_context)
{
    // No parameter testing on this level.
    // This has been done on upper level.

    mbedtls_sha256_context * p_backend_context
        = &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context);

    mbedtls_sha256_init(p_backend_context);

    mbedtls_sha256_starts(p_backend_context, 0);

    return NRF_SUCCESS;
}

static uint32_t mbedtls_backend_hash_sha256_update(void     * const p_context,
                                                   uint8_t  const * p_data,
                                                   size_t           size)
{
    // Limited parameter testing on this level.
    // This has been done on upper level.

    mbedtls_sha256_context * p_backend_context
        = &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context);

    mbedtls_sha256_update(p_backend_context, p_data, size);

    return NRF_SUCCESS;
}


static uint32_t mbedtls_backend_hash_sha256_finalize(void       * const p_context,
                                                     uint8_t          * p_digest,
                                                     size_t     * const p_digest_size)
{
    // Limited parameter testing on this level.
    // This has been done on upper level.

    mbedtls_sha256_context * p_backend_context
        = &(((nrf_crypto_backend_hash_sha256_context_t *)p_context)->context);

    mbedtls_sha256_finish(p_backend_context, p_digest);

    *p_digest_size = NRF_CRYPTO_HASH_SIZE_SHA256;

    return NRF_SUCCESS;
}


const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha256_info =
{
    .init_fn        = mbedtls_backend_hash_sha256_init,
    .update_fn      = mbedtls_backend_hash_sha256_update,
    .finalize_fn    = mbedtls_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_BACKEND_MBEDTLS_HASH_SHA256)

#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MBEDTLS_HASH_SHA512)


static ret_code_t mbedtls_backend_hash_sha512_init(void * p_context)
{
    // No parameter testing on this level.
    // This has been done on upper level.

    mbedtls_sha512_context * p_backend_context
        = &(((nrf_crypto_backend_hash_sha512_context_t *)p_context)->context);

    mbedtls_sha512_init(p_backend_context);

    mbedtls_sha512_starts(p_backend_context, 0);

    return NRF_SUCCESS;
}


static ret_code_t mbedtls_backend_hash_sha512_update(void       * const p_context,
                                                     uint8_t    const * p_data,
                                                     size_t             size)
{
    // Limited parameter testing on this level.
    // This has been done on upper level.

    mbedtls_sha512_context * p_backend_context
        = &(((nrf_crypto_backend_hash_sha512_context_t *)p_context)->context);

    mbedtls_sha512_update(p_backend_context, p_data, size);

    return NRF_SUCCESS;
}


static ret_code_t mbedtls_backend_hash_sha512_finalize(void     * const p_context,
                                                       uint8_t        * p_digest,
                                                       size_t   * const p_digest_size)
{
    // Limited parameter testing on this level.
    // This has been done on upper level.

    mbedtls_sha512_context * p_backend_context
        = &(((nrf_crypto_backend_hash_sha512_context_t *)p_context)->context);

    mbedtls_sha512_finish(p_backend_context, p_digest);

    *p_digest_size = NRF_CRYPTO_HASH_SIZE_SHA512;

    return NRF_SUCCESS;
}


const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha512_info =
{
    .init_fn        = mbedtls_backend_hash_sha512_init,
    .update_fn      = mbedtls_backend_hash_sha512_update,
    .finalize_fn    = mbedtls_backend_hash_sha512_finalize,
    .digest_size    = NRF_CRYPTO_HASH_SIZE_SHA512,
    .context_size   = sizeof(nrf_crypto_backend_hash_sha512_context_t),
    .hash_mode      = NRF_CRYPTO_HASH_MODE_SHA512
};


#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MBEDTLS_HASH_SHA512)

#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MBEDTLS)
