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+/**
+ * \file doc_ssltls.h
+ *
+ * \brief SSL/TLS communication module documentation file.
+ */
+/*
+ *
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/**
+ * @addtogroup ssltls_communication_module SSL/TLS communication module
+ *
+ * The SSL/TLS communication module provides the means to create an SSL/TLS
+ * communication channel.
+ *
+ * The basic provisions are:
+ * - initialise an SSL/TLS context (see \c mbedtls_ssl_init()).
+ * - perform an SSL/TLS handshake (see \c mbedtls_ssl_handshake()).
+ * - read/write (see \c mbedtls_ssl_read() and \c mbedtls_ssl_write()).
+ * - notify a peer that connection is being closed (see \c mbedtls_ssl_close_notify()).
+ *
+ * Many aspects of such a channel are set through parameters and callback
+ * functions:
+ * - the endpoint role: client or server.
+ * - the authentication mode. Should verification take place.
+ * - the Host-to-host communication channel. A TCP/IP module is provided.
+ * - the random number generator (RNG).
+ * - the ciphers to use for encryption/decryption.
+ * - session control functions.
+ * - X.509 parameters for certificate-handling and key exchange.
+ *
+ * This module can be used to create an SSL/TLS server and client and to provide a basic
+ * framework to setup and communicate through an SSL/TLS communication channel.\n
+ * Note that you need to provide for several aspects yourself as mentioned above.
+ */