Encrypt User name
//package jtweet.util;
import java.util.logging.Logger;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.crypto.spec.IvParameterSpec;
public class Encrypt {
private static Logger log = Logger.getLogger(Encrypt.class.getName());
public final static String accountSeperator = ":";
private static String key = "1234abcd";
private static String decrypt(String message) throws Exception {
byte[] bytesrc = convertHexString(message);
Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
byte[] retByte = cipher.doFinal(bytesrc);
return new String(retByte);
}
private static String encrypt(String message) throws Exception {
Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));
cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
return toHexString(cipher.doFinal(message.getBytes("UTF-8")));
}
private static byte[] convertHexString(String ss) {
byte digest[] = new byte[ss.length() / 2];
for (int i = 0; i < digest.length; i++) {
String byteString = ss.substring(2 * i, 2 * i + 2);
int byteValue = Integer.parseInt(byteString, 16);
digest[i] = (byte) byteValue;
}
return digest;
}
private static String toHexString(byte b[]) {
StringBuffer hexString = new StringBuffer();
for (int i = 0; i < b.length; i++) {
String plainText = Integer.toHexString(0xff & b[i]);
if (plainText.length() < 2)
plainText = "0" + plainText;
hexString.append(plainText);
}
return hexString.toString();
}
public static String[] decodeAccount(String cookieValue) {
try {
String origi = Encrypt.decrypt(cookieValue);
String[] parts = origi.split(Encrypt.accountSeperator);
if (parts.length == 2 && !parts[0].equals("") && !parts[1].equals("")) {
return parts;
}
} catch (Exception e) {
e.printStackTrace();
log.warning(e.getMessage());
}
return null;
}
public static String encodeAccount(String username, String password) {
String encryptString = null;
try {
encryptString = Encrypt.encrypt(username + Encrypt.accountSeperator + password);
} catch (Exception e) {
log.warning(e.getMessage());
}
return encryptString;
}
}
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