@deftypefun {size_t} {gnutls_cipher_get_key_size} (gnutls_cipher_algorithm_t @var{algorithm})
@var{algorithm}: is an encryption algorithm

This function returns the key size of the provided algorithm.

@strong{Returns:} length (in bytes) of the given cipher's key size, or 0 if
the given cipher is invalid.
@end deftypefun