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diff --git a/drivers_nrf/hal/nrf_ecb.h b/drivers_nrf/hal/nrf_ecb.h
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+/**
+ * Copyright (c) 2012 - 2017, 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.
+ * 
+ */
+/**
+ * @file
+ * @brief ECB driver API.
+ */
+
+#ifndef NRF_ECB_H__
+#define NRF_ECB_H__
+
+/**
+ * @defgroup nrf_ecb AES ECB encryption
+ * @{
+ * @ingroup nrf_drivers
+ * @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.
+ */
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @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__
+
+/** @} */