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Solves substitution cipher algorithm on short text without spaces
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nonari/simpleDecipher
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SIMPLE DECIPHER PROJECT ======================== This software tries to solve the problem of deciphering a simple substitution ciphered text with no spaces. This project was born from a capture the flag game proposed by an IT Security teacher at the university. The game is about choosing a 1000 letters text and ciphering it with the simple substitution algorithm. For long texts CrypTool makes it simple to decipher by letter statistics. For small ones there are various online tools to easily solve it, but only when the text is normally spaced. When no spaces are leaved, deciphering a small text becomes harder. This tool makes the following steps to decipher the text: 1. Two small pieces of ciphered text are passed as arguments 2. All possible words patterns are extracted form the pieces 3. Every pattern is matched with all possible dictionary words 4. A tree search algorithm its performed on each piece 5. Both sets of solutions generated are compared and the most similar couple is chosen as the probable solution
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Solves substitution cipher algorithm on short text without spaces
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