The Copiale Cipher*. Kevin Knight. Beáta Megyesi and Christiane Schaefer. USC Information Sciences Institute. Department of Linguistics and. PDF | The Copiale cipher is a page enciphered book dated We describe the features of the book and the method by which we deciphered it. The Copiale Cipher*. Kevin Knight. Beáta Megyesi and Christiane Schaefer. USC Information Sciences Institute. Department of Linguistics and Philology.

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A comparison with 80 languages confirmed that the original copjale was likely German, which the researchers had guessed based on the word “Philipp,” a German spelling.

The researchers found that the initial ciphef pages describe an Oculist initiation ceremony. Retrieved October 25, A machine translation expert, Knight approached language translation as if all languages were ciphers, effectively treating foreign words as symbols for English words.

Retrieved from ” https: American Association for the Advancement of Science.

By using this site, you agree to the Terms of Use and Privacy Policy. Retrieved 1 July This page was last edited on 22 Novemberat Retrieved 2 November In addition, some ciphertext characters stand for several characters or even a word.


Copiale cipher – Wikipedia

The manuscript portrays, among other things, an initiation ritual in which the candidate is asked to read a blank piece of paper and, on confessing inability to do so, is given eyeglasses and asked to try again, and then again after washing the eyes with a cloth, followed by an “operation” ciphsr which a single eyebrow hair is plucked. Seven ciphertext characters encode the single letter “e”.

For example, all the unaccented Roman characters encode a space. Archived from the original on November 2, In other projects Wikimedia Commons. Megyesi later realized that a particular symbol meant “eye”, and Schaefer connected that discovery to the Oculists.

Copiale cipher

The manuscript is a homophonic cipher that uses a complex substitution codeincluding symbols and letters, for its text and spaces. History of cryptography Classical ciphers.

Knight then used a combination cipiale intuition and computing techniques to decipher most of the code in a few weeks. Views Read Edit View history. His approach, which tasked an expectation-maximization algorithm with generating every possible match of foreign and English words, enabled the algorithm to figure out a few words with each pass.

The only plain text in the book is “Copiales 3” at the end and “Philipp ” on the flyleaf. It is not a 1-for-1 substitution but rather a homophonic cipher: From Wikipedia, the free encyclopedia. The Copiale cipher is a substitution cipher.


The Copiale cipher includes abstract symbols, as well as letters from Greek and most of the Roman alphabet. The Copiale cipher is an encrypted manuscript consisting of 75, handwritten characters filling pages in a bound volume.

Previously examined by scientists at the German Academy of Sciences at Berlin in the s, the cipher was thought to date from between and The Philipp Copiales 3 document, however, appears to suggest that the Oculists, or at least Count Veltheim, were a group of Copiiale who created the Oculist society in order to pass along the Masonic rites [7] clpiale which had recently been banned by Pope Clement XII.

Philipp is thought to have been an owner of the manuscript.