A Collection of M-209 Key Tables

 Crypto Room  No Responses »
Mar 242013
 
A Collection of M-209 Key Tables

Inspired by the Enigma World Code Group page, I have created a collection of key tables for the M-209 cipher machine for use by collectors and cryptography enthusiasts. This publicly-available collection of key tables, much like the code sheets on the Enigma World Code Group site, provides a set of ready-to-use M-209 keying material for M-209 aficionados to use. Obviously, openly published key tables don’t provide any real security, but they can be used by hobbyists to exchange M-209 cryptograms without needing to generate and distribute keying materials first. These key tables can be used for educational and entertainment purposes.

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Practical Use of the M-209 Cipher Machine: Chapter 1

 Crypto Room  2 Responses »
Mar 232013
 
Practical Use of the M-209 Cipher Machine: Chapter 1

This post is part of a series of posts describing practical use of the M-209 cipher machine. The series will cover operation of the machine, setting the cipher key, formatting of messages, ciphering and deciphering messages, dealing with transmission errors, practices to make cryptanalysis (code breaking) of messages more difficult, and generating new key tables.

This chapter covers cryptographic basics to help you understand the machine.

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Looks Like My M936A1 Works

 Motor Pool  2 Responses »
Dec 102012
 
Looks Like My M936A1 Works

Another collector is buying my incomplete M1022 shelter dolly carcasses to use the parts for a couple of creative projects. They’re a bit hard to move around in any case because they’re all missing critical parts like the drawbars, but we had to deal with the added complication that they were pushed out of the way with a bulldozer before my home construction project, and then I built a house between them and the driveway. So, extracting one of them yesterday was a job for my new M936A1 wrecker.

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