diff options
author | David Sommerseth <dazo@users.sourceforge.net> | 2011-07-28 23:58:50 +0200 |
---|---|---|
committer | David Sommerseth <dazo@users.sourceforge.net> | 2011-07-28 23:58:50 +0200 |
commit | 3b75dec3e32e7d838ed56be5667d1cf3ac4cef18 (patch) | |
tree | 3defa3778d3b3b63061151b1f9e9d4ee1253131e /doc_control_tls.h | |
parent | Added main/control docs (diff) | |
download | openvpn-3b75dec3e32e7d838ed56be5667d1cf3ac4cef18.tar.xz |
Moved doxygen-specific files to a separate directory
Signed-off-by: Adriaan de Jong <dejong@fox-it.com>
Acked-by: David Sommerseth <dazo@users.sourceforge.net>
Signed-off-by: David Sommerseth <dazo@users.sourceforge.net>
Diffstat (limited to 'doc_control_tls.h')
-rw-r--r-- | doc_control_tls.h | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/doc_control_tls.h b/doc_control_tls.h deleted file mode 100644 index aba55f7..0000000 --- a/doc_control_tls.h +++ /dev/null @@ -1,105 +0,0 @@ -/* - * OpenVPN -- An application to securely tunnel IP networks - * over a single TCP/UDP port, with support for SSL/TLS-based - * session authentication and key exchange, - * packet encryption, packet authentication, and - * packet compression. - * - * Copyright (C) 2010 Fox Crypto B.V. <openvpn@fox-it.com> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -/** - * @file - * Control Channel TLS module documentation file. - */ - -/** - * @defgroup control_tls Control Channel TLS module - * - * This module provides secure encapsulation of control channel messages - * exchanged between OpenVPN peers. - * - * The Control Channel TLS module uses the Transport Layer Security (TLS) - * protocol to provide an encrypted communication channel between the - * local OpenVPN process and a remote peer. This protocol simultaneously - * offers certificate-based authentication of the communicating parties. - * - * @par This module's roles - * The Control Channel TLS module is essential for the security of any - * OpenVPN-based system. On the one hand, it performs the security - * operations necessary to protect control channel messages exchanged - * between OpenVPN peers. On the other hand, before the control and data - * channels are even setup, it controls the exchange of certificates and - * verification of the remote's identity during negotiation of VPN - * tunnels. - * - * @par - * The former role is described below. The latter is described in the - * documentation for the \c verify_callback() function. - * - * @par - * In other words, this module takes care of the confidentiality and - * integrity of data channel communications, and the authentication of - * both the communicating parties and the control channel messages - * exchanged. - * - * @par Initialization and cleanup - * Because of the one-to-one relationship between control channel TLS - * state and \c key_state structures, the initialization and cleanup of an - * instance of the Control Channel TLS module's state happens within the - * \c key_state_init() and \c key_state_free() functions. In other words, - * each \c key_state object contains exactly one OpenSSL SSL-BIO object, - * which is initialized and cleaned up together with the rest of the \c - * key_state object. - * - * @par Packet processing functions - * This object behaves somewhat like a black box with a ciphertext and a - * plaintext I/O port. Its interaction with OpenVPN's control channel - * during operation takes place within the \c tls_process() function of - * the \link control_processor Control Channel Processor\endlink. The - * following functions are available for processing packets: - * - If ciphertext received from the remote peer is available in the \link - * reliable Reliability Layer\endlink: - * - Insert it into the ciphertext-side of the SSL-BIO. - * - Use function: \c key_state_write_ciphertext() - * - If ciphertext can be extracted from the ciphertext-side of the - * SSL-BIO: - * - Pass it to the \link reliable Reliability Layer\endlink for sending - * to the remote peer. - * - Use function: \c key_state_read_ciphertext() - * - If plaintext can be extracted from the plaintext-side of the SSL-BIO: - * - Pass it on to the \link control_processor Control Channel - * Processor\endlink for local processing. - * - Use function: \c key_state_read_plaintext() - * - If plaintext from the \link control_processor Control Channel - * Processor\endlink is available to be sent to the remote peer: - * - Insert it into the plaintext-side of the SSL-BIO. - * - Use function: \c key_state_write_plaintext() or \c - * key_state_write_plaintext_const() - * - * @par Transport Layer Security protocol implementation - * This module uses the OpenSSL library's implementation of the TLS - * protocol in the form of an OpenSSL SSL-BIO object. - * - * @par - * For more information on the OpenSSL library's BIO objects, please see: - * - OpenSSL's generic BIO objects: - * http://www.openssl.org/docs/crypto/bio.html - * - OpenSSL's SSL-BIO object: - * http://www.openssl.org/docs/crypto/BIO_f_ssl.html - */ |