Vigenere Cracker

A very basic vigenere cipher cracker using Kasiski Examination and Frequency Analysis

Usage

1. Clone the repository
2. cd Vigenere Cracker
3. javac VigenereCracker.java
4. java VigenereCracker --inFile [input_file] --outFile [output_file]
5. The program parses the cipher text present in the input file and writes the message to output file.

Example

The following cipher is taken from here

java VigenereCracker --inFile problem1.txt --outFile output.txt

Most probable key length: 6
Guessed Key by Frequency Analysis: RANDOM
Output saved to output.txt