The Legion of the Bouncy Castle Java Cryptography API provides a lightweight cryptography API in Java

The Legion of the Bouncy Castle Java Cryptography API provides a lightweight cryptography API in Java, a provider for the JCE and JCA, a clean-room implementation of the JCE 1.2.1, generators for Version 1 and Version 3 X.509 certificates, generators for Version 2 X.509 attribute certificates, PKCS12 support, and APIs for dealing with S/MIME, CMS, OCSP, TSP, OpenPGP, and TLS. Versions are provided for the J2ME, and JDK 1.0-1.6.

• Operating Systems : OS Independent
• Implementation : Java