Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Vigenere autokey cipher

  1. Apr 24, 2008 #1
    Hello! I would like to ask everybody with vigenere autokey cipher. The type of encryption:


    PlainText: THISISMYTEXT
    Key: ONETHISISMYT

    Ciphertext: HUMLPAEGLQVM

    If has sbd autobreaker for this, please help me. Have a nice day
     
  2. jcsd
  3. Apr 30, 2008 #2
    Straight-up decryption of Vigenére is not trivial. Polyalphabetic chiphers, even simple ones, generally means you need some sort of angle to attack them. It helps a lot if you know a part of the plaintext (you can use that to deduce the key) or the length of the key (which you can then use to split the Vigenére into several monoalphabetic Caesar chipher).

    k
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Vigenere autokey cipher
  1. Copiale Cipher Cracked (Replies: 0)

Loading...