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diff --git a/src/libstrongswan/plugins/botan/botan_diffie_hellman.h b/src/libstrongswan/plugins/botan/botan_diffie_hellman.h
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+/*
+ * Copyright (C) 2018 René Korthaus
+ * Copyright (C) 2018 Konstantinos Kolelis
+ * Rohde & Schwarz Cybersecurity GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * @defgroup botan_diffie_hellman botan_diffie_hellman
+ * @{ @ingroup botan_p
+ */
+
+#ifndef BOTAN_DIFFIE_HELLMAN_H_
+#define BOTAN_DIFFIE_HELLMAN_H_
+
+typedef struct botan_diffie_hellman_t botan_diffie_hellman_t;
+
+#include <crypto/diffie_hellman.h>
+
+/**
+ * Implementation of the Diffie-Hellman algorithm using Botan.
+ */
+struct botan_diffie_hellman_t {
+
+	/**
+	 * Implements diffie_hellman_t interface.
+	 */
+	diffie_hellman_t dh;
+};
+
+/**
+ * Creates a new botan_diffie_hellman_t object.
+ *
+ * @param group			Diffie Hellman group number to use
+ * @param ...			expects generator and prime as chunk_t if MODP_CUSTOM
+ * @return				botan_diffie_hellman_t object,
+ *						NULL if not supported
+ */
+botan_diffie_hellman_t *botan_diffie_hellman_create(
+											diffie_hellman_group_t group, ...);
+
+#endif /** BOTAN_DIFFIE_HELLMAN_H_ @}*/