@deftypefun {int} {gnutls_x509_crt_set_issuer_alt_othername} (gnutls_x509_crt_t @var{crt}, const char * @var{oid}, const void * @var{data}, unsigned int @var{data_size}, unsigned int @var{flags})
@var{crt}: a certificate of type @code{gnutls_x509_crt_t} 

@var{oid}: The other name OID

@var{data}: The data to be set

@var{data_size}: The size of data to be set

@var{flags}: GNUTLS_FSAN_SET to clear previous data or GNUTLS_FSAN_APPEND to append. 

This function will set an "othername" to the issuer alternative name certificate
extension.

The values set are set as binary values and are expected to have the proper DER encoding.
For convenience the flags @code{GNUTLS_FSAN_ENCODE_OCTET_STRING}  and @code{GNUTLS_FSAN_ENCODE_UTF8_STRING} 
can be used to encode the provided data.

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

@strong{Since:} 3.5.0
@end deftypefun