Java和PHP一致的DES编码

civilvar

最近在做一个项目需要实现一个SSO，这个项目是由两个Team共同开发，其中一个Team使用Java作为开发语言，另一个通过PHP。这样就存在一个在Java和PHP中传递用户身份的问题，实现方法是通过DES加密Cookie实现，这样就要求Java和PHP在DES以后出来的结果一致，费劲一番周折终于实现这两种语言实现相同结果的代码，代码如下：

Java代码


/* * @(#)CookieCrypt.java *  * Create Version:1.0.0 * Author:Cobra Pang * Create Date:2007-12-17 *  * Copyright (c) 2006 UTStarcom(China) Corporation. All Right Reserved. */ import java.io.IOException;import java.security.SecureRandom; import javax.crypto.Cipher;import javax.crypto.SecretKey;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESKeySpec; import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;  /** * CookieCrypt * @author Cobra Pang * @version1.0.02007-12-17 */public class CookieCrypt {// Crypt Keyprivate byte[] desKey;public CookieCrypt(String desKey) {this.desKey = desKey.getBytes();}/** * DES Encoder * @param plainText * @return  * @throws Exception */public byte[] desEncrypt(byte[] plainText) throws Exception {   SecureRandom sr = new SecureRandom();   byte rawKeyData[] = desKey;DESKeySpec dks = new DESKeySpec(rawKeyData);   SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");   SecretKey key = keyFactory.generateSecret(dks);   Cipher cipher = Cipher.getInstance("DES");   cipher.init(Cipher.ENCRYPT_MODE,   key,   sr);   byte data[] = plainText;   byte encryptedData[] = cipher.doFinal(data);   return encryptedData;   }/** * DES Decoder * @param encryptText * @return * @throws Exception */public byte[] desDecrypt(byte[] encryptText) throws Exception {               SecureRandom sr = new SecureRandom();        byte rawKeyData[] = desKey;        DESKeySpec dks = new DESKeySpec(rawKeyData);                SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");        SecretKey key = keyFactory.generateSecret(dks);                Cipher cipher = Cipher.getInstance("DES");                cipher.init(Cipher.DECRYPT_MODE, key, sr);                byte encryptedData[] = encryptText;        byte decryptedData[] = cipher.doFinal(encryptedData);        return decryptedData;    }/** * Cookie Encoder * @param input * @return * @throws Exception */public String encrypt(String input) throws Exception {return base64Encode(desEncrypt(input.getBytes()));}/** * Cookie Decoder * @param input * @return * @throws Exception */public String decrypt(String input) throws Exception {byte[] result = base64Decode(input);return new String(desDecrypt(result));}/** * Base64 Encode * @param s * @return */public static String base64Encode(byte[] s) {if (s == null) return null;BASE64Encoder b = new sun.misc.BASE64Encoder();return b.encode(s);}/** * Base64 Decode * @param s * @return * @throws IOException */public static byte[] base64Decode(String s) throws IOException {if (s == null) return null;BASE64Decoder  decoder = new BASE64Decoder();byte[] b = decoder.decodeBuffer(s);return b;} public static void main(String[] args) throws Exception {String key = "123321";String input = "1|utstar@utstar.com|11000000000000|";CookieCrypt crypt = new CookieCrypt(key);System.out.println("Encode:" + crypt.encrypt(input));System.out.println("Decode:" + crypt.decrypt(crypt.encrypt(input))); }}
PHP代码


<?php/* * @(#)CookieCrypt.php *  * Create Version:1.0.0 * Author:Cobra Pang * Create Date:2007-12-17 *  * Copyright (c) 2006 UTStarcom(China) Corporation. All Right Reserved. */class CookieCrypt {var $key;function CookieCrypt($key) {$this->key = $key;}function encrypt($input) {$size = mcrypt_get_block_size('des', 'ecb');    $input = $this->pkcs5_pad($input, $size);   $key = $this->key;    $td = mcrypt_module_open('des', '', 'ecb', '');    $iv = @mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);    @mcrypt_generic_init($td, $key, $iv);    $data = mcrypt_generic($td, $input);    mcrypt_generic_deinit($td);    mcrypt_module_close($td);    $data = base64_encode($data);    return $data;}function decrypt($encrypted) {$encrypted = base64_decode($encrypted);    $key =$this->key;    $td = mcrypt_module_open('des','','ecb',''); //使用MCRYPT_DES算法,cbc模式          $iv = @mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);       $ks = mcrypt_enc_get_key_size($td);         @mcrypt_generic_init($td, $key, $iv);       //初始处理           $decrypted = mdecrypt_generic($td, $encrypted);       //解密           mcrypt_generic_deinit($td);       //结束          mcrypt_module_close($td);               $y=$this->pkcs5_unpad($decrypted);        return $y;}function pkcs5_pad ($text, $blocksize) {    $pad = $blocksize - (strlen($text) % $blocksize);    return $text . str_repeat(chr($pad), $pad);} function pkcs5_unpad($text) {$pad = ord($text{strlen($text)-1});if ($pad > strlen($text)) return false;if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return false;    return substr($text, 0, -1 * $pad);}} $key = "123321";$input = "1|utstar@utstar.com|11000000000000|"; $crypt = new CookieCrypt($key);echo "Encode:".$crypt->encrypt($input)."<br/>";echo "Decode:".$crypt->decrypt($crypt->encrypt($input));?>