licenceexecuter.Encryptor.java Source code

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Here is the source code for licenceexecuter.Encryptor.java

Source

/*
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 * and open the template in the editor.
 */
package licenceexecuter;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

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

/**
 *
 * @author demantoide
 */
public class Encryptor {

    public static String encrypt(String key, String initVector, String value) {
        try {
            IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
            SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");

            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);

            byte[] encrypted = cipher.doFinal(value.getBytes());
            return Base64.encodeBase64String(encrypted);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        return null;
    }

    public static String decrypt(String key, String initVector, String encrypted) {
        try {
            IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
            SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");

            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);

            byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));

            return new String(original);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        return null;
    }

    //    public static void main(String[] args) {
    //        String key = "G3$@$7htD9&jm%44"; // 128 bit key
    //        String initVector = "RandomInitVector"; // 16 bytes IV
    //
    //        String enc = encrypt(key, initVector, "aa1qaz2wsx@@");
    //        System.out.println("ENC: " + enc);
    //        System.out.println("DEC: " + decrypt(key, initVector, enc));
    //    }
}