Provided by: gnutls-doc_3.0.11+really2.12.14-5ubuntu3_all
gnutls_dh_params_generate2 - API function
#include <gnutls/gnutls.h> int gnutls_dh_params_generate2(gnutls_dh_params_t params, unsigned int bits);
gnutls_dh_params_t params Is the structure that the DH parameters will be stored unsigned int bits is the prime's number of bits
This function will generate a new pair of prime and generator for use in the Diffie-Hellman key exchange. The new parameters will be allocated using gnutls_malloc() and will be stored in the appropriate datum. This function is normally slow. Do not set the number of bits directly, use gnutls_sec_param_to_pk_bits() to get bits for GNUTLS_PK_DSA. Also note that the DH parameters are only useful to servers. Since clients use the parameters sent by the server, it's of no use to call this in client side.
On success, GNUTLS_E_SUCCESS (zero) is returned, otherwise an error code is returned.
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The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site, the command info gnutls should give you access to the complete manual.