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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_lesc/ble_lesc.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_lesc/ble_lesc.h
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+/**
+ * Copyright (c) 2018 - 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, 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
+ *
+ * @defgroup ble_lesc BLE LESC module
+ * @{
+ * @ingroup ble_sdk_lib
+ *
+ * @brief Module for handling LESC DHKey requests.
+ */
+#ifndef BLE_LESC_H__
+#define BLE_LESC_H__
+
+#include "sdk_common.h"
+#include "ble_gap.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**@brief Function to initialize the ble_lesc module.
+ *
+ * @details This function initializes the nrf_crypto for key
+ *          generation and ECDH calculations.
+ *
+ * @retval  NRF_SUCCESS     Initalization was successful.
+ * @return  Any error code reported by @ref nrf_crypto_init.
+ * @return  Any error code reported by @ref nrf_crypto_rng_init.
+ */
+ret_code_t ble_lesc_init(void);
+
+
+/**@brief Function to generate a ECC key pair to use in LESC
+ *
+ * @details This function initializes the crypto system by calling nrf_crypto_init
+ *          and nrf_crypto_rng_init before calling the required functions to generate
+ *          the ECC key pair. If the key generation was successful this function sets
+ *          the LESC local public key in peer manager by calling 
+ *          @ref pm_lesc_public_key_set.
+ *
+ * @note    Run @ref ble_lesc_init before calling this API.
+ *
+ * @retval  NRF_SUCCESS     Generating ECC key pair was successful.
+ * @return  Any error code form @ref nrf_crypto_ecc_key_pair_generate.
+ * @return  Any error code from @ref nrf_crypto_ecc_public_key_to_raw.
+ * @return  Any error code from @ref nrf_crypto_ecc_byte_order_invert.
+ * @return  Any error code reported by @ref pm_lesc_public_key_set.
+ */
+ret_code_t ble_lesc_ecc_keypair_generate_and_set(void);
+
+
+/**@brief Function to get the current LESC ECC local public key
+ *
+ * @details This function gets the current ECC local public key used LESC pairing procedure
+ *          the format of this key is in a type usable by peer manager, NFC (OOB) and SoftDevice.
+ *
+ * @note    Run @ref ble_lesc_ecc_keypair_generate_and_set before calling this function.
+ *
+ * @retval  NRF_SUCCESS                 Getting the local public key was successful.
+ * @retval  NRF_ERROR_NULL              pp_lesc_public_key was NULL.
+ * @retval  NRF_ERROR_INVALID_STATE     No ECC keypair was generated prior to this call
+ */
+ret_code_t ble_lesc_ecc_local_public_key_get(ble_gap_lesc_p256_pk_t const ** pp_lesc_public_key);
+
+
+/**@brief Function to service LESC ECDH calculations
+ *
+ * @details This function will calculate a LESC ECDH key (also known as shared secret) as long as
+ *          @ref BLE_GAP_EVT_LESC_DHKEY_REQUEST event has been received from SoftDevice.
+ *
+ * @note This function should be run in a low interrupt priority like an idle-loop in the main
+ *       application context.
+ *
+ * @warning Any error code reported by this function that is not @ref NRF_SUCCESS is critical and should be 
+ *          handled by aborting all ongoing BLE operations and resetting the device. 
+ *          Failure to do is a security risk.
+ *
+ * @retval NRF_SUCCESS              Service operation was successful.
+ * @return Any other error code than NRF_SUCCESS which indicates that the device is in a critical state
+ *         and must be restarted.
+ */
+ret_code_t ble_lesc_service_request_handler(void);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // BLE_LESC_H__
+
+/** @} */