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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.h
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+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/oberon/oberon_backend_chacha_poly_aead.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.
+ * 
+ */
+
+#ifndef OBERON_BACKEND_CHACHA_POLY_AEAD_H__
+#define OBERON_BACKEND_CHACHA_POLY_AEAD_H__
+
+/** @file
+ *
+ * @defgroup nrf_crypto_oberon_backend_chacha_poly_aead nrf_crypto Oberon backend CHACHA_POLY AEAD
+ * @{
+ * @ingroup nrf_crypto_oberon_backend
+ *
+ * @brief AES AEAD functionality provided by the nrf_crypto Oberon backend.
+ */
+
+#include "sdk_config.h"
+
+#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON)
+
+#include "nrf_crypto_aead_shared.h"
+#include "occ_chacha20_poly1305.h"
+#include "nrf_crypto_error.h"
+#include "nrf_crypto_types.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NRF_CRYPTO_OBERON_CHACHA_POLY_BACKEND_KEY_SIZE (32)
+
+/* CHACHA-POLY */
+#if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_CHACHA_POLY)
+#if NRF_MODULE_ENABLED(NRF_CRYPTO_CHACHA_POLY)
+#error "Duplicate definition of CHACHA-POLY mode. More than one backend enabled");
+#endif
+#define NRF_CRYPTO_CHACHA_POLY_ENABLED  1
+#undef  NRF_CRYPTO_AEAD_ENABLED
+#define NRF_CRYPTO_AEAD_ENABLED  1  // Flag that nrf_crypto_aead frontend can be compiled
+#undef  NRF_CRYPTO_OBERON_CHACHA_POLY_AEAD_ENABLED
+#define NRF_CRYPTO_OBERON_CHACHA_POLY_AEAD_ENABLED   1   // aead backend for Oberon can be compiled
+
+/* defines for test purposes */
+#define NRF_CRYPTO_AES_CHACHA_POLY_256_ENABLED  1
+
+typedef struct
+{
+    nrf_crypto_aead_internal_context_t header;  /**< Common header for context. */
+
+    uint8_t key[NRF_CRYPTO_OBERON_CHACHA_POLY_BACKEND_KEY_SIZE];
+} nrf_crypto_backend_chacha_poly_context_t;
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON)
+
+/** @} */
+
+#endif // OBERON_BACKEND_CHACHA_POLY_AEAD_H__
+