Function krb5_sys::krb5_c_decypt_iov

pub unsafe extern fn krb5_c_decypt_iov(context: krb5_context,
                                       keyblock: *const krb5_keyblock,
                                       usage: krb5_keyusage,
                                       cipher_state: *const krb5_data,
                                       data: *mut krb5_crypto_iov,
                                       num_data: usize)
                                       -> krb5_error_code