Dcypher

Dcypher is a decoder for decoding text encrypted with Gold-Bug cipher in Haskell with accuracy of 92% over the hidden test set. Used various heuristics like frequency, bigram and trigram analysis and hamming distance comparison to improve both running time and accuracy of the algorithm.

Encrypted Text with normal Characters

1. Add the encrypted text by Gold-Bug Cipher in file GoldBugCipher.txt
2. Compile and run Dcypher.hs file
3. Output will be in the file DicipheredText.txt

ghc Dcypher.hs
./Dcypher

Encrypted Text with Special Characters

1. Add the encrypted text by Gold-Bug Cipher in file GoldBugCipherSpecialCharacters.txt all text here must be of non-alphabetical type.
2. Compile and run DcypherWithSpecialCharacters.hs file
3. Output will be in the file DicipheredTextWithSpecialCharacters.txt

ghc DcypherWithSpecialCharacters.hs
./Dcypher