Implemented a generic TLS EAP helper to implement EAP-TLS, TTLS and other variants

2010-08-31 16:16:58 +02:00
parent ecd98efa9d
commit 877c910f04
3 changed files with 415 additions and 0 deletions
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2010 Martin Willi
+ * Copyright (C) 2010 revosec AG
+ *
+ * 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 tls_eap tls_eap
+ * @{ @ingroup libtls
+ */
+
+#ifndef TLS_EAP_H_
+#define TLS_EAP_H_
+
+typedef struct tls_eap_t tls_eap_t;
+
+#include <eap/eap.h>
+
+#include "tls_application.h"
+
+/**
+ * TLS over EAP helper, as used by EAP-TLS and EAP-TTLS.
+ */
+struct tls_eap_t {
+
+	/**
+	 * Initiate TLS over EAP exchange (as client).
+	 *
+	 * @param out			allocated EAP packet data to send
+	 * @return
+	 *						- NEED_MORE if more exchanges required
+	 *						- FAILED if initiation failed
+	 */
+	status_t (*initiate)(tls_eap_t *this, chunk_t *out);
+
+	/**
+	 * Process a received EAP-TLS/TTLS packet, create response.
+	 *
+	 * @param in			EAP packet data to process
+	 * @param out			allocated EAP packet data to send
+	 * @return
+	 *						- SUCCESS if TLS negotiation completed
+	 *						- FAILED if TLS negotiation failed
+	 *						- NEED_MORE if more exchanges required
+	 */
+	status_t (*process)(tls_eap_t *this, chunk_t in, chunk_t *out);
+
+	/**
+	 * Get the EAP-MSK.
+	 *
+	 * @return				MSK
+	 */
+	chunk_t (*get_msk)(tls_eap_t *this);
+
+	/**
+	 * Destroy a tls_eap_t.
+	 */
+	void (*destroy)(tls_eap_t *this);
+};
+
+/**
+ * Create a tls_eap instance.
+ *
+ * @param type				EAP type, EAP-TLS or EAP-TTLS
+ * @param is_server			role
+ * @param server			server identity
+ * @param peer				peer identity, NULL to omit peer authentication
+ * @param application		TLS application layer, if any
+ */
+tls_eap_t *tls_eap_create(eap_type_t type, bool is_server,
+						  identification_t *server, identification_t *peer,
+						  tls_application_t *application);
+
+#endif /** TLS_EAP_H_ @}*/