- created

- untested
2005-11-28 15:53:35 +00:00
parent 81796a5232
commit 0c7cfb183c
2 changed files with 861 additions and 0 deletions
@@ -0,0 +1,113 @@
+/**
+ * @file encryption_payload.h
+ * 
+ * @brief Interface of encryption_payload_t.
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * 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 ENCRYPTION_PAYLOAD_H_
+#define ENCRYPTION_PAYLOAD_H_
+
+#include <types.h>
+#include <transforms/crypters/crypter.h>
+#include <transforms/signers/signer.h>
+#include <encoding/payloads/payload.h>
+#include <utils/linked_list.h>
+
+/**
+ * encrpytion payload length in bytes without IV and following data
+ */
+#define ENCRYPTION_PAYLOAD_HEADER_LENGTH 4
+
+
+typedef struct encryption_payload_t encryption_payload_t;
+
+/** 
+ * @brief The encryption payload as described in RFC section 3.14.
+ * 
+ */
+struct encryption_payload_t {
+	/**
+	 * implements payload_t interface
+	 */
+	payload_t payload_interface;
+	
+	/**
+	 * @brief Creates an iterator for all contained payloads.
+	 *
+	 * @param this 			calling encryption_payload_t object
+	 * @param iterator  	the created iterator is stored at the pointed pointer
+	 * @param[in] forward 	iterator direction (TRUE: front to end)
+	 * @return	
+	 * 						- SUCCESS or
+	 * 						- OUT_OF_RES if iterator could not be created
+	 */
+	status_t (*create_payload_iterator) (encryption_payload_t *this, iterator_t **iterator, bool forward);
+	
+	/**
+	 * @brief Adds a payload to this encryption payload.
+	 *
+	 * @param this 			calling encryption_payload_t object
+	 * @param payload		payload_t object to add
+	 * @return 				- SUCCESS if succeeded
+	 * 						- FAILED otherwise
+	 */
+	status_t (*add_payload) (encryption_payload_t *this, payload_t *payload);
+	
+	/**
+	 * @brief Decrypt and return contained data.
+	 * 
+	 * Decrypt the contained data (encoded payloads) using supplied crypter.
+	 *
+	 * @param this			calling encryption_payload_t
+	 * @param crypter		crypter_t to use for data decryption
+	 * @param[out]data		resulting data in decrypted and unpadded form
+	 * @return 				
+	 *						- SUCCESS, or
+	 *						- FAILED if crypter does not match data
+	 */
+	
+	status_t (*set_signer) (encryption_payload_t *this, signer_t *signer); 
+	
+	status_t (*encrypt) (encryption_payload_t *this, crypter_t *crypter);
+	status_t (*decrypt) (encryption_payload_t *this, crypter_t *crypter);
+	
+	status_t (*build_signature) (encryption_payload_t *this, chunk_t data);
+	status_t (*verify_signature) (encryption_payload_t *this, chunk_t data);
+
+	/**
+	 * @brief Destroys an encryption_payload_t object.
+	 *
+	 * @param this 	encryption_payload_t object to destroy
+	 * @return 		
+	 * 						- SUCCESS in any case
+	 */
+	status_t (*destroy) (encryption_payload_t *this);
+};
+
+/**
+ * @brief Creates an empty encryption_payload_t object.
+ * 
+ * @return			
+ * 					- created encryption_payload_t object, or
+ * 					- NULL if failed
+ */
+ 
+encryption_payload_t *encryption_payload_create();
+
+
+#endif /*ENCRYPTION_PAYLOAD_H_*/