If you value the privacy of your websites users, then please consider using
a one-way encryption algorithm instead of the Wicket provided ICrypt
implementations. The intention of these encryption facilities is to keep
passwords private when stored in cookies or in the session.The implementation
of the encryption algorithm may change between releases. As such, this
interface and its implementations are not intended and should not be used as
an encryption facility for persistent values.
As of Wicket 1.2 the methods encrypt and decrypt are deprecated. Consider
changing your persistent encryption strategy to be based on a one-way
encryption such as a SHA1 hash, not depending on Wicket classes.