Nihilist Cipher.

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Presentation transcript:

Nihilist Cipher

History Dates back to late 19th century, early 21st Used by nihilists in Russia against czarist regime

Implementation 6x6 Square Follows keyword format Requires two keywords 1 2 3 4 5 A W E S O M B C D F G H I K L N P Q R T U V X Y Z

Implementation F A I L 25 11 33 35 H E A D C 32 13 11 24 23 25 11 33 57 44 59 36 34 65 48

Cryptanalysis Can be attacked similarly to the Vigenere cipher Uses normal addition Keyword analyzation Same keyword is used for encryption & decryption Distribution relevant to vowels Diagram/Trigram frequency analysis

Bibliography http://www.animal.ahrgr.de/showAnimationDetails.php3?lang=en&anim=215 Nihilist cipher. (2007, April 24). In Wikipedia, The Free Encyclopedia. Retrieved 11:32, September 20, 2007, from http://en.wikipedia.org/w/index.php?title=Nihilist_cipher&oldid=125516929 http://university.cyberarmy.net/kb/tiki-print.php?page=russian%20cipher%201 http://webopedia.com/TERM/S/symetric_encryption.html