=pod =head1 NAME SSL_CTX_config, SSL_config - configure SSL_CTX or SSL structure =head1 SYNOPSIS #include int SSL_CTX_config(SSL_CTX *ctx, const char *name); int SSL_config(SSL *s, const char *name); =head1 DESCRIPTION The functions SSL_CTX_config() and SSL_config() configure an B or B structure using the configuration B. =head1 NOTES By calling SSL_CTX_config() or SSL_config() an application can perform many complex tasks based on the contents of the configuration file: greatly simplifying application configuration code. A degree of future proofing can also be achieved: an application can support configuration features in newer versions of OpenSSL automatically. A configuration file must have been previously loaded, for example using CONF_modules_load_file(). See L for details of the configuration file syntax. =head1 RETURN VALUES SSL_CTX_config() and SSL_config() return 1 for success or 0 if an error occurred. =head1 EXAMPLE If the file "config.cnf" contains the following: testapp = test_sect [test_sect] # list of confuration modules ssl_conf = ssl_sect [ssl_sect] server = server_section [server_section] RSA.Certificate = server-rsa.pem ECDSA.Certificate = server-ecdsa.pem Ciphers = ALL:!RC4 An application could call: if (CONF_modules_load_file("config.cnf", "testapp", 0) <= 0) { fprintf(stderr, "Error processing config file\n"); goto err; } ctx = SSL_CTX_new(TLS_server_method()); if (SSL_CTX_config(ctx, "server") == 0) { fprintf(stderr, "Error configuring server.\n"); goto err; } In this example two certificates and the cipher list are configured without the need for any additional application code. =head1 SEE ALSO L, L, L =head1 HISTORY SSL_CTX_config() and SSL_config() were first added to OpenSSL 1.1.0 =head1 COPYRIGHT Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at L. =cut