gnutls_anon_set_server_known_dh_params - Linux

Overview

gnutls_anon_set_server_known_dh_params sets the DH parameters to be used on the server side for anonymous authentication. This allows the server to provide a known DH group to the client, ensuring forward secrecy and stronger security.

Syntax

gnutls_anon_set_server_known_dh_params(session, dh_params)

Options/Flags

• session (gnutls_session_t) – The GNUTLS session object.
• dh_params (gnutls_dh_params_t) – The DH parameters to use.

Examples

#include <gnutls/gnutls.h>

int main(void) {
    gnutls_session_t session;
    gnutls_dh_params_t dh_params;

    // Initialize GNUTLS
    gnutls_global_init();

    // Create a new session
    gnutls_init(&session, GNUTLS_SERVER);

    // Set DH parameters
    gnutls_dh_params_init(&dh_params);
    gnutls_anon_set_server_known_dh_params(session, &dh_params);

    // Start the session
    gnutls_handshake(session);

    // Use the session as needed

    // Clean up
    gnutls_deinit(session);
    gnutls_global_deinit();

    return 0;
}

Common Issues

• Ensure the DH parameters are generated securely and have sufficient strength.
• Use this function before starting the handshake.

Integration

This command can be used with other GNUTLS functions to establish secure connections with anonymous authentication.

Related Commands

• gnutls_anon_set_server_dh_params: Sets DH parameters for anonymous server authentication.
• gnutls_anon_set_client_dh_params: Sets DH parameters for anonymous client authentication.