CSICTF-Writeups/Crypto/The Climb/Main.java

public class ClimbSolver {
    static String encrypted = "lrzlhhombgichae";
    static String key = "gybnqkurp";
    
    public static void brute(int startPos) {
        int size = (int) Math.sqrt(key.length());
        String encChunk = encrypted.substring(startPos, startPos + size);
        Main obj = new Main();
        obj.keyconv(key, size);
        for (char a = 'a'; a <= 'z'; a++)
        for (char b = 'a'; b <= 'z'; b++)
        for (char c = 'a'; c <= 'z'; c++) {
            String text = "" + a + b + c;
            obj.textconv(text);
            obj.multiply(text.length());
            String res = obj.res(text.length());
            if (res.equals(encChunk)) {
                System.out.print(text);
            }
        }
    }
    
    public static void main(String[] args) {
        for (int i = 0; i < encrypted.length(); i += 3) {
            brute(i);
        }
        System.out.println();
    }
}