Jasypt: Encryption on Java

Jasypt is a java library which allows the developer to add basic encryption capabilities to his/her projects with minimum effort, and without the need of having deep knowledge on how cryptography works.

• High-security, standards-based encryption techniques, both for unidirectional and bidirectional encryption. Encrypt passwords, texts, numbers, binaries...
• 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.

Copied from: http://www.jasypt.org
Adrià, I hope this help you in near future. And is Licensed under Apache Software License.