gnutls_dh_get_prime_bits - return the bits used in DH authentication
int gnutls_dh_get_prime_bits(gnutls_session_t session);
is a gnutls session
This function will return the bits of the prime used in the last
Diffie-Hellman authentication with the peer. Should be used for both
anonymous and ephemeral Diffie-Hellman. Note that some ciphers, like
RSA and DSA without DHE, does not use a Diffie-Hellman exchange, and
then this function will return 0.
The Diffie-Hellman bit strength is returned, or 0 if no Diffie-Hellman
exchange was done, or a negative error code on failure.
Report bugs to <email@example.com>. GnuTLS home page:
http://www.gnu.org/software/gnutls/ General help using GNU software:
Copyright © 2008 Free Software Foundation.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
The full documentation for gnutls is maintained as a Texinfo manual.
If the info and gnutls programs are properly installed at your site,
should give you access to the complete manual.