TrfCrypt (Version 2.0p3 / March 31, 2001)
		Andreas Kupries	(a.kupries@westend.com)

This directory contains a freely distributable add-on package to the Trf
extension to Tcl/Tk. The collection of provided transformation procedures
includes the encryption algorithms:

*	IDEA
*	Blowfish
*	RC4
*	RC2
*	DES

The last two of them depend on an external library (libdes, libcrypto from
SSLeay). The documentation contains references to them.


TrfCrypt is developed for Tcl 7.6 or higher.  It is a pure Tcl extension,
Tk is not required.  The extension requires an installed Trf package.
Supporting (optional) packages are:

*	trf 1.2			(NOT optional)
*	memchan 1.0  or higher	(required by testsuite)
*	libdes 3.21  or higher
*	SSLeay-0.6.6 or higher


This distribution contains the source code for TrfCrypt + documentation
describing commands (-> latex) and c-level interfaces (-> man-pages).

There will be NO upload to the official ftp-archive at ftp.neosoft.com
to avoid problems with US export regulations (ITAR, cryptography
is ammunition).



COMPILING/USING TrfCrypt

To compile TrfCrypt please follow the instructions in the file
'install.tex' in the 'doc' subdirectory. This contains a reference
manual too (man.tex).

To report bugs, bug fixes, descriptions of interesting TrfCrypt
applications, and suggested improvements:

+) Send email to a.kupries@westend.com

or

+) Post an article to the newsgroup	comp.lang.tcl


PLATFORMS
	tested:
		Linux 2.0.29	(gcc 2.7.2.3)	Development system
		IRIX 6.2	(cc only)
		ULTRIX 4.1	(both cc and gcc)
		ULTRIX 4.4	(cc 3.0)
		HP-UX-9		(both cc and gcc)
		HP-UX-10.2
		Solaris 2.5	(gcc only)

	Other machines and OS's should work too. 

Feedback about other OS's and compilers is appreciated. Please
help me in making this package better.