This program is an exact simulation of the 3-rotor Army and famous 4-rotor Naval M4, used on U-boats, of the German Enigma cipher machine, as it was used during World War II from 1939 until 1945. You can select between the two models, choose different rotors or 'Walzen', preset the rotor wiring positions or 'Ringstellung' and switch letters by using plugs or 'Stecker'. The code is based on the technical details of the original machine. The internal wiring of all rotors is identical to those used by Wehrmacht, Luftwaffe and Kriegsmarine. Lots of research went into the design, working and handling, to provide a realistic and accurate simulation of all aspects of this crypto machine. It allows control and observation of all components. The simulator is therefor fully compatible with the real Enigma and you can decode original messages and encode your own text. The program includes a Smart Clipboard, Automatic Typing, a Helpfile containing the manual, the history of Enigma, several original messages and all technical details! There's also a picture gallery with authentic Enigma's and details of components. With this program you will finally be able to work with the most intriguing milestone in military cryptology and examine how it works and how it was operated. This is not one of many sims, available on the net, but a true reference to the Enigma machine! Well documented source code with lots of comments. All feedback and comments welcome. Program also available at
http://users.telenet.be/d.rijmenants/en/enigmasim.htm
*** New Update !!! 29 MAr 05, v4.0 ***
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Very nice app and graphics, but parts of code are very difficult to follow. The slideshow in aboutbox is great! Is this app for you own "just for fun"? There must be really a lot of work in it. Kind regards - LiTe
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For those who still might wonder how it works: Open the cover, select the rotors, their order and ringposition, close the cover, set plugs, and finally set rotors in startposition, type your text, and the ciphertext is shown. To decrypt, turn the rotors back into start position (no need to open cover) and type the encrypted text. Plaintext comes out. The setting of rotors, their position, ringposition, plugs and rotor-startposition gave for those times a stunning 10E23 combinations. Unbreakable if not used so sloppy in the field by theire operators. (If this comment was disrespectful, please report it.)
Absolutely worth 5 globes even the design alone is worth it.
Very nice work, thanks a lot for giving us a look at the inside.
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10/20/2004 6:24:06 AM:
Just fantastic! I always thought the Enigma was so intriguing when ever I would read about it. Now I have one of my very own to 'play' with. 5 'Walzen' for you. (If this comment was disrespectful, please report it.)
Although cryptology is not an interest of mine, there is some nice coding techniques and non-standard graphical controls...nice work. Certainly Five'r worthy. (If this comment was disrespectful, please report it.)
all i have to say is...OMG!!!!!!!!!!! dude you have 5 globes....you rock....i wish you win the competition.!!! i am voting right away (If this comment was disrespectful, please report it.)
Did someone already decrypt the code-message in the comments, about the Bismark? Yep, it's in German (ofcourse, original text) but you'll get the point :-) (If this comment was disrespectful, please report it.)
Beautifull graphics, historically correct mechanism and functioning, good code (although there is dead code in frmMain.SetReF after '4th rotor). Well deserves more than 5 rotors (may be we can double that number with a reflector?) Two tiny inaccuracies: a lamp would only be on as long as a key was pressed and batteries don't last forever... (If this comment was disrespectful, please report it.)
Note to Ulli: Without the correct settings, I'll never be able to encode your message. Never heard about wath it took to crack the Enigma in Blechtley Park? At his top, the park had over 7000 people working on breaking codes! And they didn't always succeed. The Marine Shark-code was far te most challenging. Many clever guy's went bezirk, trying to break each month the new codes! (If this comment was disrespectful, please report it.)
The code was produced on an Enigma I made some time ago. It uses random stecker, rotor and reflektor wiring based on a 'config number'; the code is therefore not compatible with any of your settings. The clear text is the kudos that follows. Btw I decoded the Bismarck message and it's the historically correct message: Treffer achteraus und manoevierunfaehig. Kaempfen bis zur letzten Granate etc... (If this comment was disrespectful, please report it.)
Indeed Ulli, great 'story' no? Hope we made some people warmd-up for this magnificent piece of art in history, as Enigma was...I presume you were a fan already. (If this comment was disrespectful, please report it.)
Well, YOU(!) obviously did... The next project is "The Bomb" at Bletchley Park? Unfortunately I don't know anything about that, only that it existed and what it did. (If this comment was disrespectful, please report it.)
Check out "the secret war" by Brian Johnson, it has a complete detailed chapter about how the Enigma developed, got broken and detailed photos (also from colossus) Nice submission. (If this comment was disrespectful, please report it.)
10/20/2004 11:59:20 AM:
cool crypto technology :) (If this comment was disrespectful, please report it.)
Wow - impressive coding. THJDL GFJSH ASHGJ FJDKA GHSUG QLRNC to you too (I think I messed up a setting somewhere) (If this comment was disrespectful, please report it.)
Tks, tks, tks !!!! About that coding, I must have rewrote it a 100 times: 50 times before it worked properly and 50 times to clean up the mess :-) By the way, as you can see, I used some German expressions in the code, I'm not German, but it kind of got me into the 'enigma-mood' by using that technical giberish, just for the fun ;-) (If this comment was disrespectful, please report it.)
I love that U571 the movie and Call of Duty game. My imagination of game - It could be cool play germans. You have less than 24 minutes to send enima before American spies capture U571. Can you General Public License "U571" into a game?
There's Rhino 3D file I think http://www.es.rhino3d.com/gallery/marine/u571.htm
Lots of U571 images. http://subtaktyka.neostrada.pl/galeria%2C%20sceny%20z%20filmow%20u571.htm
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About that movie, Nice but way off track of reality. The Britisch had Enigma already at the beginning of the war thrue Polisch intelligence, who copied the machine by plans of a polish mechanic that worked for the Germans, and exercised analysing Enigma by pre-war codebooks, sold by the German Hans Thilo-Schmidt. The movie is a mix of the codebook captures by Britisch Navy of weatherships, like in Scapa Flow, and the attacts on U-boats like the famous U-110 from Lt Lempe by HMS Bulldog and U-559 by the HMS Petard. This only to provide Bletchley Park of codebookmaterial. The complete hystorie and analysis you can find in the book Station-X by Michael Smith. And THATS an exiting (and true) story! (If this comment was disrespectful, please report it.)
There's a scene in the movie "Das Boot" (probably "The Boat" in english) where actor Martin Semmelrogge operates an Enigma machine in the officer's mess amongst food leftovers and mildewy potatoes... (If this comment was disrespectful, please report it.)
I have Uploaded on 10/28 the technical details and Enigma's history in the readme, more comments in the code, and did some small 'cosmetic' changes. Enjoy It ;-) (If this comment was disrespectful, please report it.)
I would like to thank all the nice people for voting this submission to the contests first place. I am pleased that is was appreciated by so many. THANK, THANKS, THANKS :-) :-) :-) (If this comment was disrespectful, please report it.)
Wow, this is totally great. I've accually been wanting to build a real enigma machine for a long time, this'll hold me over till I can and give me some real codes to try out when I do build one. (If this comment was disrespectful, please report it.)
wow nice work is fantastic....good job (If this comment was disrespectful, please report it.)
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10/19/2004 12:05:56 PM: 
