Cryptkit is a Tcl binding to the Cryptlib security toolkit.

From the Cryptlib web site - "The Cryptlib security toolkit is a powerful security toolkit that allows even inexperienced crypto programmers to easily add encryption and authentication services to their software. The high-level interface provides anyone with the ability to add strong security capabilities to an application in as little as half an hour, without needing to know any of the low-level details that make the encryption or authentication work. Because of this, cryptlib dramatically reduces the cost involved in adding security to new or existing applications." [http://www.cs.auckland.ac.nz/~pgut001/cryptlib]

Cryptkit brings these benefits to Tcl.

This first release provides an API that closely matches the Cryptlib C API (to remain consistent with the existing documentation). The next release will have a more "Tclish" API.

Downloads
   * the Cryptkit README [http://www.digitalsmarties.com/cryptkit/README]
   * a Starkit containing a pre-built Cryptkit package for Linux and Mac OSX [http://www.digitalsmarties.com/cryptkit/cryptkit.kit]
   * the Cryptkit source [http://www.digitalsmarties.com/cryptkit/cryptkit.tar.gz]
   * some test scripts at [http://www.digitalsmarties.com/cryptkit/tests] also demonstrate the use of Cryptkit from Tcl  

Cryptkit was written by Steve Landers [mailto:steve@DigitalSmarties.com] and was made possible through the financial support of Eolas Technologies Inc. Cryptkit is distributed under a Tcl BSD style license, as documented in
the license.terms file in the distribution.