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farm9 releases 'crypt cat' encrypted version of netcat
From: InfoSec News <isn () C4I ORG>
Date: Sat, 23 Sep 2000 03:52:09 -0500
Forwarded By: George Milliken <gmilliken () farm9 com> farm9.com is pleased to announce our first release of Open Source tools. We started off with a simple but very useful tool called 'netcat' written by the L0pht and we modified it to provide encryption. We implemented twofish which is a very strong algorithm and one of the contenders to replace DES. What is cryptcat good for you ask? Well basically it lets you open an encrypted pipe, on any port, between two machines. Useful for transferring log files between machines in a safe manner. cryptcat is easy to use in shell scripts. It's a poor mans VPN. It is very small and light. Source code is included. Here's some more info: http://207.33.208.248/News/Free_Tools/Cryptcat Also see our web site! http://www.farm9.com ==================================================================== cryptcat = netcat + encryption Cryptcat is the standard netcat enhanced with twofish encryption. Twofish is courtesy of counterpane, and cryptix. We started with the Java version of twofish from cryptix, converted it to C++ (don't ask why), and enhanced it by adding CBC mode and the ciphertext stealing technique from Applied Cryptography (pg. 196) How do you use it? Machine A: cryptcat -l -p 1234 < testfile Machine B: cryptcat <machine A IP> 1234 This is identical to the normal netcat options for doing exactly the same thing. However, in this case the data transferred is encrypted. Want the source? Windows version -- adapted from the Hobbit original by Weld Pond, very tricky! (and I thought adding twofish was tricky) Linux version -- why I like Linux... only had to change two lines of code to add encryption. Is it Really Secure? Not if you know the secret key, which is hardcoded to be "metallica" ==================================================================== ISN is hosted by SecurityFocus.com --- To unsubscribe email LISTSERV () SecurityFocus com with a message body of "SIGNOFF ISN".
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