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SlunkCrypt v1.3.2 SlunkCrypt v1.3.2 An experimental cross-platform cryptography library. SlunkCrypt is an experimental cross-platform cryptography library and command-line tool. A fully-featured GUI is provided for the Windows platform. Encryption algorithm The SlunkCrypt algorithm is based on core concepts of the well-known Enigma machine but with numerous improvements, largely inspired by R. Anderson’s “A Modern Rotor Machine”: The original Enigma machine had only three (or, in some models, four) rotors, plus a static “reflector” wheel. In SlunkCrypt, we uses 256 simulated rotors for an improved security. Furthermore, the original Enigma machine supported only 26 distinct symbols, i.e. the letters A to Z. In SlunkCrypt, we use 256 distinct symbols, i.e. the byte values 0x00 to 0xFF, which allows the encryption (and decryption) of arbitrary streams of bytes, rather than just plain text. Of course, SlunkCrypt can encrypt (and decrypt) text files as well. In the original Enigma machine, the signal passes through the rotors twice, once in forward direction and then again in backwards direction – thus the “reflector” wheel. This way, the Enigma’s encryption was made involutory, i.e. encryption and decryption were the same operation. While this was highly convenient, it also severely weakened the cryptographic strength of the Enigma machine, because the number of possible permutations was reduced drastically! This is one of the main reasons why the Enigma machine eventually was defeated. In SlunkCrypt, the signal passes through the simulated rotors just once, in order to maximize the number of possible permutations. This eliminates the most important known weakness of the Enigma machine. Obviously, in SlunkCrypt, separate “modes” for encryption and decryption need to be provided, since encryption and decryption no longer are the same operation. In the original Enigma machine, the rightmost rotor was moved, by one step, after every symbol. Meanwhile, all ... |
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