@deftypefun {int} {gnutls_pubkey_import} (gnutls_pubkey_t @var{key}, const gnutls_datum_t * @var{data}, gnutls_x509_crt_fmt_t @var{format})
@var{key}: The public key. 

@var{data}: The DER or PEM encoded certificate. 

@var{format}: One of DER or PEM 

This function will import the provided public key in
a SubjectPublicKeyInfo X.509 structure to a native
@code{gnutls_pubkey_t}  type. The output will be stored 
in  @code{key} . If the public key is PEM encoded it should have a header 
of "PUBLIC KEY". 

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

@strong{Since:} 2.12.0
@end deftypefun