Jasypt is a java library which allows the developer to add basic encryption capabilities to projects.

it provides :
* high-security, standards-based encryption techniques, both for
unidirectional and bidirectional encryption.
* transparent integration with hibernate.
* suitable for integration into spring-based applications and also
transparently integrable with spring security.
* integrated capabilities for encrypting the configuration of
applications (i.e. datasources).
* specific features for high-performance encryption in
multi-processor/multi-core systems.
* open api for use with any jce provider.