gnutls_dh_params_export_pkcs3 — API function


#include <gnutls/gnutls.h>
int gnutls_dh_params_export_pkcs3( gnutls_dh_params_t params,
  gnutls_x509_crt_fmt_t format,
  unsigned char * params_data,
  size_t * params_data_size);


gnutls_dh_params_t params

Holds the DH parameters

gnutls_x509_crt_fmt_t format

the format of output params. One of PEM or DER.

unsigned char * params_data

will contain a PKCS3 DHParams structure PEM or DER encoded

size_t * params_data_size

holds the size of params_data (and will be replaced by the actual size of parameters)


This function will export the given dh parameters to a PKCS3 DHParams structure. This is the format generated by "openssl dhparam" tool. If the buffer provided is not long enough to hold the output, then GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.

If the structure is PEM encoded, it will have a header of "BEGIN DH PARAMETERS".


On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error code is returned.


Report bugs to <>.

General guidelines for reporting bugs:

GnuTLS home page:


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. As an alternative you may obtain the manual from:


Copyright © 2001-2013 Free Software Foundation, Inc..

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.