@deftypefun {int} {gnutls_x509_privkey_get_seed} (gnutls_x509_privkey_t @var{key}, gnutls_digest_algorithm_t * @var{digest}, void * @var{seed}, size_t * @var{seed_size})

@var{key}: should contain a @code{gnutls_x509_privkey_t}  type

@var{digest}: if non-NULL it will contain the digest algorithm used for key generation (if applicable)

@var{seed}: where seed will be copied to

@var{seed_size}: originally holds the size of  @code{seed} , will be updated with actual size

This function will return the seed that was used to generate the

given private key. That function will succeed only if the key was generated

as a provable key.

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

negative error value.

@strong{Since:} 3.5.0

@end deftypefun