The GoldenGate Digest project contains several classes that are common with different sub projects of GoldenGate (FTP, OpenR66, ...). These classes are for Digest implementation.
This project has Netty framework (NIO great framework support at http://www.jboss.org/netty as dependency. It is tend to be really efficient, both in term of memory, threads and network bandwidth.. It contains a re implementation of the FastMD5 library from Santeri Paavolainen and Timothy W Macinta.
These classes are for Digest implementation.
See global GoldenGate project at http://openr66.free.fr/and particular GoldenGate Digest page at http://openr66.free.fr/GoldenGateDigest.html