GNU Crypto, part of the GNU project, released under the aegis of GNU, aims
at providing free, versatile, high-quality, and provably correct
implementations of cryptographic primitives and tools in the Java
programming language for use by programmers and end-users.

GNU Crypto is licensed under the terms of the GNU General Public License,
with the "library exception" which permits its use as a library in
conjunction with non-Free software.