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@deftypefun {int} {gnutls_x509_crq_export} (gnutls_x509_crq_t @var{crq}, gnutls_x509_crt_fmt_t @var{format}, void * @var{output_data}, size_t * @var{output_data_size})
@var{crq}: should contain a @code{gnutls_x509_crq_t}  type

@var{format}: the format of output params. One of PEM or DER.

@var{output_data}: will contain a certificate request PEM or DER encoded

@var{output_data_size}: holds the size of output_data (and will be
replaced by the actual size of parameters)

This function will export the certificate request to a PEM or DER
encoded PKCS10 structure.

If the buffer provided is not long enough to hold the output, then
@code{GNUTLS_E_SHORT_MEMORY_BUFFER}  will be returned and
* @code{output_data_size} will be updated.

If the structure is PEM encoded, it will have a header of "BEGIN
NEW CERTIFICATE REQUEST".

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned, otherwise a
negative error value.
@end deftypefun