Gck.Session.prototype.unwrap_key

function unwrap_key(wrapper: Gck.Object, mech_type: Number(gulong), input: ByteArray, attrs: Gck.Attributes, cancellable: Gio.Cancellable): Gck.Object {
    // Gjs wrapper for gck_session_unwrap_key()
}

Unwrap a key from a byte stream. This call may block for an indefinite period.

If the attrs Gck.Attributes is floating, it is consumed.

wrapper: The key to use for unwrapping.
mech_type: The mechanism to use for unwrapping.
input: the wrapped data as a byte stream
attrs: Additional attributes for the unwrapped key.
cancellable: Optional cancellation object, or NULL.
Returns: the new unwrapped key or NULL if the operation failed