Viewing Single Post From: Tutorial: Identifying A Cipher

Viewing Single Post From: Tutorial: Identifying A Cipher
Revelation	Dec 18 2007, 09:31 AM
Administrator Posts: 386 Group: Admin Member #1 Joined: August 23, 2005	This will be the new tutorial about how to identify a cipher, If you have anything to add, please post a reply! I can't make this tutorial alone Step one: visual identification Sometimes you can see by the looks of the cipher what cipher it is. ADFGVX Cipher: If you only see ADFGVX ADFGX Cipher: If you only see ADFGX Do not look at spacing if you see groups of words. The spacings are probably added manually and the true spaces have been removed. Step two: frequency counting In most languages one character appears more often than other characters. In English this is the 'e', then followed by 'taoi'. Some ciphers replace one character with another and this causes the frequencies to change. For example, if you replace the 'e' with a 'z' in a text, the z has an abnormally high frequency. If you find that the frequency of your cipher text differs much from this table You're probably dealing with a substitution cipher. Note: This method works better if you've got a long cipher text. In short texts the frequencies may be really different. Example: That man is a qualified waiter. to be continued
	RRRREJMEEEEEPVKLWENFNVJKEEEEEAOLKAFKLXCFZAASDJXZTTTTTTTLSIOWJXMOKLAFJNNKFNXN RAGRBAQEMHIGDJVDSEOXVIYCELFHWLELJFIENXLRATALSJFSLCYTKLASJDKMHGOVOKAJDNMNUITN RRRRLJVEEEEECLYVYHNVPFTAEEEEEMWLMEIRNGLARWJAKJDFLWNTIERJMIPQWOTZEOCXKNUBNXCN RJIRPOWEANFUSNCZVDVZNMSFEKLOEPZLDKDJWSAAAAAAAOERHJCTNCKFRIMVKSOFOMKMANREWNBN RZUDRGXEEEEENFQIDVLQNCKNEEEEEDGLLLLLLAWIOSNCDARLODMTOEJXMILDFJROTKJSDNLVCZNN

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