Apache WSS4J is an implementation of the Web Services Security
(WS-Security) being developed at OASIS Web Services Security TC.
WSS4J is a primarily a Java library that can be used to sign and
verify SOAP Messages with WS-Security information. WSS4J will
use Apache Axis and Apache XML-Security projects and will be
interoperable with JAX-RPC based server/clients and .NET
server/clients.