44 %
56 %
Information about Enigma

Published on December 31, 2007

Author: Gulkund

Source: authorstream.com

The Enigma Encryption System:  The Enigma Encryption System Andrew Regan CSC 290 Key Components for Encryption/Decryption:  Key Components for Encryption/Decryption Plugboard 3 Rotating Removable Rotors Reflector Sample Encryption/Decryption:  Sample Encryption/Decryption Enigma:  Enigma Enigma Properties:  Enigma Properties 3 rotors  26x26x26 = 17,576 initial settings Rotor order  3x2x1 = 6 possible arrangements Swapping 6 letters  100,391,791,500 Approximately 1016 = 10,000,000,000,000,000 keys Later versions of the Enigma had even more keys. Swapped more than 6 letters Selected 3 rotors from set of 5 Ciphertext-Only Attack:  Ciphertext-Only Attack Developed by James Gillogly. Find initial rotor setting and rotor order. Uses Index of Coincidence. Iterate through all possible initial rotor settings and rotor orders with no plugboard. Largest IOC is the most likely rotor arrangement. Uses rotor settings from step 1. Finds one new plugboard setting for each iteration. Decrypt the text with every possible character pair. 25x26 = 650 pairs. Trigram analysis on the 650 decrypted texts. Add the setting to the plugboard with the best decrypted text. Step 1: Step 2: Ciphertext-Only Attack Step 1 Results:  Ciphertext-Only Attack Step 1 Results Ciphertext-Only Attack Step 1 Results Cont.:  Ciphertext-Only Attack Step 1 Results Cont. Current Trigram Results:  Current Trigram Results Attempted analyzing text based on most probable trigrams in English plaintext. +1 for “good” trigram, -1 for “bad.” Highest score wins. To many swaps initially to be accurate. Currently working on developing trigram statistics for partially decrypted Enigma texts to use in the initial rounds of finding the plugboard settings.

Add a comment

Related presentations

Related pages

Enigma (Maschine) – Wikipedia

Die Enigma (griechisch αἴνιγμα ainigma „Rätsel“, Eigenschreibweise auch: ENIGMA) ist eine Rotor-Schlüsselmaschine, die im Zweiten Weltkrieg ...
Read more

ENIGMA | Musik, Videos, News, Bilder und Konzerttermine

Musik, News und Videos von ENIGMA sowie alle Termine, Fotos, Alben und Singles findest Du hier!
Read more

Enigma Moments | Enigma (Musical Project)

Enigma turns 25. Share your most memorable Enigma Moments! Let’s build together the most comprehensive archive of Enigma’s life story ever!
Read more

Die Blinde Kuh: Kryptologie - Die Enigma

Die Enigma, das ist die Chiffriermaschine, die das deutsche Militär im zweiten Weltkrieg benutzt hat
Read more

Enigma | Define Enigma at Dictionary.com

Enigma definition, a puzzling or inexplicable occurrence or situation: His disappearance is an enigma that has given rise to much speculation. See more.
Read more

Enigma (2001) - IMDb

Title: Enigma (2001) 6.4 /10. Want to share IMDb's rating on your own site? Use the HTML below. You must be a registered ...
Read more

Enigma – Alle Musik Videos und Songs vom neuen Album ...

Alle Musik Videos von Enigma jetzt kostenlos anschauen in Top Qualität. Songs vom neuen Album und alle alten Lieder im offiziellen Video Channel auf MyVideo.
Read more

Enigma – Wikipedia

Enigma (griechisch αἴνιγμα „das Rätsel“) bezeichnet: Enigma (Georgia), ein Ort in den USA; Technik: Enigma (Maschine), eine Chiffriermaschine
Read more

Enigma — Free listening, videos, concerts, stats and ...

Watch videos & listen free to Enigma: Return to Innocence, Gravity of Love & more. There is more than one artist with the name Enigma: 1) Enigma is a ...
Read more

Enigma (musical project) - Wikipedia, the free encyclopedia

Enigma is a German new age musical project formed in 1990 by Michael Cretu, David Fairstein and Frank Peterson. The Romanian-born Cretu conceived the ...
Read more