Toenciphera message means to replace the letters in the text with the replacement alphabet. The readable message is called theplaintext. The cryptographer converts the plaintext into a cipher and sends it on. The recipient of the message uses the proper technique, called thekey, to decipher t...
We study a previously undeciphered Civil War cryptogram, limiting ourselves to pencil and paper, and discover not only a missive of military importance, but in the process, identify a new Confederate codeword. Our methods rely not only upon cryptanalysis of the encryption method but also on ...
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###crypto.createDecipher(algorithm, password) Creates and returns a Decipher object that uses the given algorithm and password (key). The implementation of crypto.createDecipher() derives keys using the OpenSSL function EVP_BytesToKey with the digest algorithm set to MD5, one iteration, and no sa...
In the late 1500s, Blaise de Vigenère proposed a polyalphabetic system that is particularly difficult to decipher. His method used a combination of the Trimethius tableau and akey. The key determined which of the alphabets in the table the decipherer should use, but wasn't necessarily pa...