com.philosophy.LicenseDecoder.java Source code

Introduction

Here is the source code for com.philosophy.LicenseDecoder.java

Source

package com.philosophy;

import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import org.apache.commons.codec.binary.Base64;

public class LicenseDecoder {
    private String license = null;

    public LicenseDecoder(String text) {
        license = text;
        byte[] keyBytes = { 88, 42, 94, 52, 56, 81, 82, 98 };
        System.out.println("Original License : " + license);
        try {
            SecretKey key = new SecretKeySpec(keyBytes, "DES");
            Cipher cipher = Cipher.getInstance("DES");
            byte[] decoded = Base64.decodeBase64(license.getBytes());
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte[] decrypted = cipher.doFinal(decoded);
            System.out.println("Decrypted license : " + new String(decrypted));
        } catch (NoSuchAlgorithmException e) {
        } catch (NoSuchPaddingException e) {
        } catch (InvalidKeyException e) {
        } catch (IllegalStateException e) {
        } catch (IllegalBlockSizeException e) {
        } catch (BadPaddingException e) {
        }
    }

    public static void main(String[] args) {
        String lic = "hFFawMG7tMqnRtESKF5Dypjg+Ce/l6/A";
        new LicenseDecoder(lic);

        /*
        if (args.length > 0) {
            LicenseDecoder ld = new LicenseDecoder(args[0].toString());
        }
        else {
            LicenseDecoder ld = new LicenseDecoder(lic);
        }*/
    }

}