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diff --git a/src/charon/encoding/payloads/cert_payload.h b/src/charon/encoding/payloads/cert_payload.h
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+++ b/src/charon/encoding/payloads/cert_payload.h
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+/**
+ * @file cert_payload.h
+ * 
+ * @brief Interface of cert_payload_t.
+ * 
+ */
+
+/*
+ * Copyright (C) 2005-2006 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#ifndef CERT_PAYLOAD_H_
+#define CERT_PAYLOAD_H_
+
+typedef enum cert_encoding_t cert_encoding_t;
+typedef struct cert_payload_t cert_payload_t;
+
+#include <library.h>
+#include <crypto/x509.h>
+#include <encoding/payloads/payload.h>
+
+/**
+ * Length of a cert payload without the cert data in bytes.
+ * 
+ * @ingroup payloads
+ */
+#define CERT_PAYLOAD_HEADER_LENGTH 5
+
+/**
+ * @brief Certificate encoding, as described in IKEv2 RFC section 3.6
+ *
+ * @ingroup payloads
+ */
+enum cert_encoding_t {
+	CERT_NONE =						 0,
+	CERT_PKCS7_WRAPPED_X509 =		 1,
+	CERT_PGP =						 2,
+	CERT_DNS_SIGNED_KEY =			 3,
+	CERT_X509_SIGNATURE =			 4,
+	CERT_KERBEROS_TOKEN	=			 6,
+	CERT_CRL =						 7,
+	CERT_ARL =						 8,
+	CERT_SPKI =						 9,
+	CERT_X509_ATTRIBUTE =			10,
+	CERT_RAW_RSA_KEY =				11,
+	CERT_X509_HASH_AND_URL =		12,
+	CERT_X509_HASH_AND_URL_BUNDLE =	13,
+	CERT_OCSP_CONTENT =				14,  /* from RFC 4806 */
+	CERT_ROOF =						15
+};
+
+/**
+ * string mappings for cert_encoding_t.
+ * 
+ * @ingroup payloads
+ */
+extern enum_name_t *cert_encoding_names;
+
+/**
+ * @brief Class representing an IKEv2 CERT payload.
+ *
+ * The CERT payload format is described in RFC section 3.6.
+ * This is just a dummy implementation to fullfill the standards
+ * requirements. A full implementation would offer setters/getters
+ * for the different encoding types.
+ * 
+ * @b Constructors:
+ * - cert_payload_create()
+ *
+ * @todo Implement setters/getters for the different certificate encodings.
+ *
+ * @ingroup payloads
+ */
+struct cert_payload_t {
+	
+	/**
+	 * The payload_t interface.
+	 */
+	payload_t payload_interface;
+
+	/**
+	 * @brief Set the CERT encoding.
+	 *
+	 * @param this 			calling cert_payload_t object
+	 * @param encoding		CERT encoding
+	 */
+	void (*set_cert_encoding) (cert_payload_t *this, cert_encoding_t encoding);
+	
+	/**
+	 * @brief Get the CERT encoding.
+	 *
+	 * @param this 			calling cert_payload_t object
+	 * @return				Encoding of the CERT 
+	 */
+	cert_encoding_t (*get_cert_encoding) (cert_payload_t *this);
+	
+	/**
+	 * @brief Set the CERT data.
+	 * 
+	 * Data are getting cloned.
+	 *
+	 * @param this 			calling cert_payload_t object
+	 * @param data			CERT data as chunk_t
+	 */
+	void (*set_data) (cert_payload_t *this, chunk_t data);
+	
+	/**
+	 * @brief Get the CERT data.
+	 * 
+	 * Returned data are a copy of the internal one.
+	 *
+	 * @param this 			calling cert_payload_t object
+	 * @return				CERT data as chunk_t
+	 */
+	chunk_t (*get_data_clone) (cert_payload_t *this);
+	
+	/**
+	 * @brief Get the CERT data.
+	 * 
+	 * Returned data are NOT copied.
+	 *
+	 * @param this 			calling cert_payload_t object
+	 * @return				CERT data as chunk_t
+	 */
+	chunk_t (*get_data) (cert_payload_t *this);
+	
+	/**
+	 * @brief Destroys an cert_payload_t object.
+	 *
+	 * @param this 			cert_payload_t object to destroy
+	 */
+	void (*destroy) (cert_payload_t *this);
+};
+
+/**
+ * @brief Creates an empty cert_payload_t object.
+ * 
+ * @return					cert_payload_t object
+ * 
+ * @ingroup payloads
+ */
+cert_payload_t *cert_payload_create(void);
+
+/**
+ * @brief Creates a cert_payload_t object with an X.509 certificate.
+ * 
+ * @param cert				X.509 certificate
+ * @return					cert_payload_t object
+ * 
+ * @ingroup payloads
+ */
+cert_payload_t *cert_payload_create_from_x509(x509_t *cert);
+
+#endif /* CERT_PAYLOAD_H_ */