Formerly Cryptonite, a pure java package for strong cryptography. It supplies RSA (usable outside of North America), DES, Triple-DES implementation as well as other utility classes. [Open Source, GPL/Commercial]
Provides open source implentations of the Java Cryptography Extension 1.2.1, and a lightweight Java Cryptography API for the J2ME, and the JDK. [Open Source]
Allegedly "one of the fastest and most efficient cryptographic algorithms in existence". [Open Source]
Cryptographic security products, including Secure Socket Layer 3 for Java. [commercial]
Provides framework and implementations for encryption, key generation and key agreement, and Message Authentication Code (MAC) algorithms.
An open source cryptographic class library for the JCA/JCE architecture. [Open Source with registration]
Libraries used internally by Netscape and iPlanet products that do crypto in Java. [Mozilla]
Java implementation of the public key cryptosystem Hidden Field Equations (HFE). Also includes matrix and finite field operations. [Open source, GPL]
The source code of the 128-bit PC1 cipher algorithm in Java.
Public key signature system QuartzLight [Open Source, GPL].