/**
 * Copyright (c) 2012 - 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 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 the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
 */

#ifndef NRF_ECB_H__
#define NRF_ECB_H__

#include <nrfx.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @defgroup nrf_ecb_hal AES ECB encryption HAL
 * @{
 * @ingroup nrf_ecb
 * @brief   Driver for the AES Electronic Code Book (ECB) peripheral.
 *
 * To encrypt data, the peripheral must first be powered on
 * using @ref nrf_ecb_init. Next, the key must be set using @ref nrf_ecb_set_key.
 */

/**
 * @brief Function for initializing and powering on the ECB peripheral.
 *
 * This function allocates memory for the ECBDATAPTR.
 * @retval true If initialization was successful.
 * @retval false If powering on failed.
 */
bool nrf_ecb_init(void);

/**
 * @brief Function for encrypting 16-byte data using current key.
 *
 * This function avoids unnecessary copying of data if the parameters point to the
 * correct locations in the ECB data structure.
 *
 * @param dst Result of encryption, 16 bytes will be written.
 * @param src Source with 16-byte data to be encrypted.
 *
 * @retval true  If the encryption operation completed.
 * @retval false If the encryption operation did not complete.
 */
bool nrf_ecb_crypt(uint8_t * dst, const uint8_t * src);

/**
 * @brief Function for setting the key to be used for encryption.
 *
 * @param key Pointer to the key. 16 bytes will be read.
 */
void nrf_ecb_set_key(const uint8_t * key);

/** @} */

#ifdef __cplusplus
}
#endif

#endif  // NRF_ECB_H__