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 * Copyright (c) 2018 - 2018, Nordic Semiconductor ASA
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 * 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
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 *    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.
 * 
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 *    engineered, decompiled, modified and/or disassembled.
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 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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 */

#ifndef CIFRA_BACKEND_AES_AEAD_H__
#define CIFRA_BACKEND_AES_AEAD_H__

/** @file
 *
 * @defgroup nrf_crypto_cifra_backend_aes_aead nrf_crypto Cifra backend AES AEAD
 * @{
 * @ingroup nrf_crypto_cifra_backend
 *
 * @brief AES AEAD functionality provided by the nrf_crypto Cifra backend.
 */

#include "sdk_config.h"

#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CIFRA)

#include "modes.h"
#include "cifra_eax_aes.h"
#include "nrf_crypto_error.h"
#include "nrf_crypto_types.h"
#include "nrf_crypto_aead_shared.h"

#ifdef __cplusplus
extern "C" {
#endif

/* AES EAX */
#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CIFRA_AES_EAX)
#if NRF_MODULE_ENABLED(NRF_CRYPTO_AES_EAX)
#error "Duplicate definition of AES EAX mode. More than one backend enabled");
#endif
#define NRF_CRYPTO_AES_EAX_ENABLED  1
#undef  NRF_CRYPTO_AEAD_ENABLED
#define NRF_CRYPTO_AEAD_ENABLED  1  // Flag that nrf_crypto_aes_aead frontend can be compiled
#undef  NRF_CRYPTO_CIFRA_AES_AEAD_ENABLED
#define NRF_CRYPTO_CIFRA_AES_AEAD_ENABLED   1   // aes_aead backend cifra can be compiled

/* defines for test purposes */
#define NRF_CRYPTO_AES_EAX_128_ENABLED  1
#define NRF_CRYPTO_AES_EAX_192_ENABLED  1
#define NRF_CRYPTO_AES_EAX_256_ENABLED  1

typedef struct
{
    nrf_crypto_aead_internal_context_t header;  /**< Common header for context. */
    cf_aes_context                     context; /**< AES EAX context internal to Cifra. */
} nrf_crypto_backend_aes_eax_context_t;
#endif

#ifdef __cplusplus
}
#endif
#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CIFRA)

/** @} */

#endif // CIFRA_BACKEND_AES_AEAD_H__

