@deftypefun {gnutls_pk_algorithm_t} {gnutls_sign_get_pk_algorithm} (gnutls_sign_algorithm_t @var{sign})
@var{sign}: is a signature algorithm

This function returns the public key algorithm corresponding to
the given signature algorithms. Note that there may be multiple
public key algorithms supporting a particular signature type;
when dealing with such algorithms use instead @code{gnutls_sign_supports_pk_algorithm()} .

@strong{Since:} 3.1.1

@strong{Returns:} return a @code{gnutls_pk_algorithm_t}  value, or @code{GNUTLS_PK_UNKNOWN}  on error.
@end deftypefun