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THIS WILL USE SALT ENCRYPTION METHOD.
1rst file: Protector.java
import java.security.*;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.*;
public class Protector {
private static final String ALGORITHM = "AES";
private static final int ITERATIONS = 5;
private static final byte[] keyValue =
new byte[] { 'T', 'h', 'i', 's', 'I', 's', 'A', 'S',
'e', 'c', 'r', 'e', 't', 'K', 'e', 'y'};
public static String encrypt(String value, String salt)
throws Exception {
Key key = generateKey();
Cipher c = Cipher.getInstance(ALGORITHM);
c.init(Cipher.ENCRYPT_MODE, key);
String valueToEnc = null;
String eValue = value;
for (int i = 0; i < ITERATIONS; i++) {
valueToEnc = salt + eValue;
byte[] encValue = c.doFinal(valueToEnc.getBytes());
eValue = new BASE64Encoder().encode(encValue);
}
return eValue;
}
public static String decrypt(String value, String salt)
throws Exception {
Key key = generateKey();
Cipher c = Cipher.getInstance(ALGORITHM);
c.init(Cipher.DECRYPT_MODE, key);
String dValue = null;
String valueToDecrypt = value;
for (int i = 0; i < ITERATIONS; i++) {
byte[] decordedValue
= new BASE64Decoder().decodeBuffer(valueToDecrypt);
byte[] decValue = c.doFinal(decordedValue);
dValue = new String(decValue).substring(salt.length());
valueToDecrypt = dValue;
}
return dValue;
}
private static Key generateKey() throws Exception {
Key key = new SecretKeySpec(keyValue, ALGORITHM);
// SecretKeyFactory keyFactory
// = SecretKeyFactory.getInstance(ALGORITHM);
// key = keyFactory.generateSecret(new DESKeySpec(keyValue));
return key;
}
}
2nd file: TestProtector.java (The one to compile and run)
public class TestProtector {
public static void main(String[] args) throws Exception {
String password = "";
String salt = "";
String passwordEnc = Protector.encrypt(password, salt);
String passwordDec = Protector.decrypt(passwordEnc, salt);
System.out.println("Salt Text : " + salt);
System.out.println("Plain Text : " + password);
System.out.println("Encrypted : " + passwordEnc);
System.out.println("Decrypted : " + passwordDec);
}
}
