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diff --git a/src/libcharon/encoding/parser.h b/src/libcharon/encoding/parser.h
new file mode 100644
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+++ b/src/libcharon/encoding/parser.h
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+/*
+ * 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.
+ */
+
+/**
+ * @defgroup parser parser
+ * @{ @ingroup encoding
+ */
+
+#ifndef PARSER_H_
+#define PARSER_H_
+
+typedef struct parser_t parser_t;
+
+#include <library.h>
+#include <encoding/payloads/encodings.h>
+#include <encoding/payloads/payload.h>
+
+/**
+ * A parser_t class to parse IKEv2 payloads.
+ *
+ * A parser is used for parsing one chunk of data. Multiple
+ * payloads can be parsed out of the chunk using parse_payload.
+ * The parser remains the state until destroyed.
+ */
+struct parser_t {
+
+	/**
+	 * Parses the next payload.
+	 *
+	 * @warning Caller is responsible for freeing allocated payload.
+	 *
+	 * Rules for parsing are described in the payload definition.
+	 *
+	 * @param payload_type	payload type to parse
+	 * @param payload		pointer where parsed payload was allocated
+	 * @return
+	 * 						- SUCCESSFUL if succeeded,
+	 * 						- PARSE_ERROR if corrupted/invalid data found
+	 */
+	status_t (*parse_payload) (parser_t *this, payload_type_t payload_type, payload_t **payload);
+
+	/**
+	 * Gets the remaining byte count which is not currently parsed.
+	 */
+	int (*get_remaining_byte_count) (parser_t *this);
+
+	/**
+	 * Resets the current parser context.
+	 */
+	void (*reset_context) (parser_t *this);
+
+	/**
+	 * Destroys a parser_t object.
+	 */
+	void (*destroy) (parser_t *this);
+};
+
+/**
+ * Constructor to create a parser_t object.
+ *
+ * @param data		chunk of data to parse with this parser_t object
+ * @return 			parser_t object
+ */
+parser_t *parser_create(chunk_t data);
+
+#endif /** PARSER_H_ @}*/