- definition of interface for singer and crypter

- not documented

1 files changed, 95 insertions, 0 deletions

diff --git a/Source/charon/transforms/crypters/crypter.h b/Source/charon/transforms/crypters/crypter.h
new file mode 100644
index 000000000..4a259dea4
--- /dev/null
+++ b/Source/charon/transforms/crypters/crypter.h
@@ -0,0 +1,95 @@
+/**
+ * @file crypter.h
+ * 
+ * @brief Generic interface for encryption algorithms
+ * 
+ */
+
+/*
+ * 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 CRYPTER_H_
+#define CRYPTER_H_
+
+#include "../../payloads/transform_substructure.h"
+
+
+/**
+ * Object representing a crypter object
+ */
+typedef struct crypter_s crypter_t;
+
+struct crypter_s {
+	/**
+	 * @brief Encrypt a chunk of data and allocate space for 
+	 * the encrypted value.
+	 * 
+	 * @param this				calling crypter
+	 * @param data				data to encrypt
+	 * @param [out]encrypted	pointer where the encrypted bytes will be written
+	 * @return				
+	 * 							- SUCCESS in any case
+	 */
+	status_t (*encrypt) (crypter_t *this, chunk_t data, chunk_t *encrypted);
+	
+	/**
+	 * @brief Decrypt a chunk of data and allocate space for 
+	 * the decrypted value.
+	 * 
+	 * @param this				calling crypter
+	 * @param data				data to decrypt
+	 * @param [out]encrypted	pointer where the decrypted bytes will be written
+	 * @return				
+	 * 							- SUCCESS in any case
+	 */
+	status_t (*decrypt) (crypter_t *this, chunk_t data, chunk_t *decrypted);
+
+	/**
+	 * @brief get the block size of this crypter
+	 * 
+	 * @param this			calling crypter
+	 * @return				block size in bytes
+	 */
+	size_t (*get_block_size) (crypter_t *this);
+	
+	/**
+	 * @brief Set the key for this crypter
+	 * 
+	 * @param this			calling crypter
+	 * @return				block size in bytes
+	 */
+	status_t (*set_key) (crypter_t *this, chunk_t key);
+	
+	/**
+	 * @brief Destroys a crypter object.
+	 *
+	 * @param this 	crypter_t object to destroy
+	 * @return 		
+	 * 				SUCCESS in any case
+	 */
+	status_t (*destroy) (crypter_t *this);
+};
+
+/**
+ * Creates a new crypter_t object
+ * 
+ * @param pseudo_random_function	Algorithm to use
+ * @return
+ * 									- crypter_t if successfully
+ * 									- NULL if out of ressources or crypter not supported
+ */
+crypter_t *crypter_create(encryption_algorithm_t encryption_algorithm);
+
+#endif /*CRYPTER_H_*/