密码加密与解密

import java.math.BigInteger;

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.spec.SecretKeySpec;

public class EnCodeTest {

private static String encode(String secret) throws NoSuchPaddingException,
NoSuchAlgorithmException, InvalidKeyException, BadPaddingException,
IllegalBlockSizeException {
byte[] kbytes = "jaas is the way".getBytes();
SecretKeySpec key = new SecretKeySpec(kbytes, "Blowfish");

Cipher cipher = Cipher.getInstance("Blowfish");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] encoding = cipher.doFinal(secret.getBytes());
BigInteger n = new BigInteger(encoding);
return n.toString(16);
}

private static String decode(String secret) throws NoSuchPaddingException,
NoSuchAlgorithmException, InvalidKeyException, BadPaddingException,
IllegalBlockSizeException {
byte[] kbytes = "jaas is the way".getBytes();
SecretKeySpec key = new SecretKeySpec(kbytes, "Blowfish");

BigInteger n = new BigInteger(secret, 16);
byte[] encoding = n.toByteArray();

Cipher cipher = Cipher.getInstance("Blowfish");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decode = cipher.doFinal(encoding);

// return new String(decode).toCharArray();
return new String(decode).toString();
}

public static void main(String[] args) throws Exception{

String userName="root";

// String password="123456";
String string2=EnCodeTest.encode(userName);
System.out.println("JDE加密后："+string2);

String string3=EnCodeTest.decode(string2);
System.out.println("解密后："+string3);

}

}