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import java.util.Random;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import sun.misc.BASE64Encoder;
public class MainClass {
public static void main(String[] args) throws Exception {
System.out.println(encrypt(new char[] { 'a', 'b', 'c', 'd' }, "plaintext1234567890"));
}
private static String encrypt(char[] password, String plaintext) throws Exception {
byte[] salt = new byte[8];
Random random = new Random();
random.nextBytes(salt);
PBEKeySpec keySpec = new PBEKeySpec(password);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithSHAAndTwofish-CBC");
SecretKey key = keyFactory.generateSecret(keySpec);
PBEParameterSpec paramSpec = new PBEParameterSpec(salt, 1000);
Cipher cipher = Cipher.getInstance("PBEWithSHAAndTwofish-CBC");
cipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
byte[] ciphertext = cipher.doFinal(plaintext.getBytes());
BASE64Encoder encoder = new BASE64Encoder();
String saltString = encoder.encode(salt);
String ciphertextString = encoder.encode(ciphertext);
return saltString + ciphertextString;
}
}
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