兼容PHP和Java的des加密解密代码分享
发布:smiling 来源: PHP粉丝网 添加日期:2021-03-03 11:44:12 浏览: 评论:0
这篇文章主要介绍了兼容PHP和Java的des加密解密代码分享,适合如服务器是JAVA语言编写,客户端是PHP编写,并需要des加密解密的情况,需要的朋友可以参考下
php代码:
- <?php
- class DES
- {
- var $key;
- var $iv; //偏移量
- function DES($key, $iv=0)
- {
- $this->key = $key;
- if($iv == 0)
- {
- $this->iv = $key;
- }
- else
- {
- $this->iv = $iv;
- }
- }
- //加密
- function encrypt($str)
- {
- $size = mcrypt_get_block_size ( MCRYPT_DES, MCRYPT_MODE_CBC );
- $str = $this->pkcs5Pad ( $str, $size );
- $data=mcrypt_cbc(MCRYPT_DES, $this->key, $str, MCRYPT_ENCRYPT, $this->iv);
- //$data=strtoupper(bin2hex($data)); //返回大写十六进制字符串
- return base64_encode($data);
- }
- //解密
- function decrypt($str)
- {
- $str = base64_decode ($str);
- //$strBin = $this->hex2bin( strtolower($str));
- $str = mcrypt_cbc(MCRYPT_DES, $this->key, $str, MCRYPT_DECRYPT, $this->iv );
- $str = $this->pkcs5Unpad( $str );
- return $str;
- }
- function hex2bin($hexData)
- {
- $binData = "";
- for($i = 0; $i < strlen ( $hexData ); $i += 2)
- {
- $binData .= chr(hexdec(substr($hexData, $i, 2)));
- }
- return $binData;
- }
- function pkcs5Pad($text, $blocksize)
- {
- $pad = $blocksize - (strlen ( $text ) % $blocksize);
- return $text . str_repeat ( chr ( $pad ), $pad );
- }
- function pkcs5Unpad($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 );
- }
- }
- $str = 'abcd';
- $key= 'asdfwef5';
- $crypt = new DES($key);
- $mstr = $crypt->encrypt($str);
- $str = $crypt->decrypt($mstr);
- echo $str.' <=> '.$mstr;
- ?>
java代码:
- package com.test;
- import it.sauronsoftware.base64.Base64;
- import java.security.Key;
- import java.security.SecureRandom;
- import java.security.spec.AlgorithmParameterSpec;
- import javax.crypto.Cipher;
- import javax.crypto.SecretKeyFactory;
- import javax.crypto.spec.DESKeySpec;
- import javax.crypto.spec.IvParameterSpec;
- public class Main
- {
- public static final String ALGORITHM_DES = "DES/CBC/PKCS5Padding";
- /**
- * DES算法,加密
- *
- * @param data 待加密字符串
- * @param key 加密私钥,长度不能够小于8位
- * @return 加密后的字节数组,一般结合Base64编码使用
- * @throws CryptException 异常
- */
- public static String encode(String key,String data) throws Exception
- {
- return encode(key, data.getBytes());
- }
- /**
- * DES算法,加密
- *
- * @param data 待加密字符串
- * @param key 加密私钥,长度不能够小于8位
- * @return 加密后的字节数组,一般结合Base64编码使用
- * @throws CryptException 异常
- */
- public static String encode(String key,byte[] data) throws Exception
- {
- try
- {
- DESKeySpec dks = new DESKeySpec(key.getBytes());
- SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
- //key的长度不能够小于8位字节
- Key secretKey = keyFactory.generateSecret(dks);
- Cipher cipher = Cipher.getInstance(ALGORITHM_DES);
- IvParameterSpec iv = new IvParameterSpec(key.getBytes());
- AlgorithmParameterSpec paramSpec = iv;
- cipher.init(Cipher.ENCRYPT_MODE, secretKey,paramSpec);
- byte[] bytes = cipher.doFinal(data);
- // return byte2hex(bytes);
- return new String(Base64.encode(bytes));
- } catch (Exception e)
- {
- throw new Exception(e);
- }
- }
- /**
- * DES算法,解密
- *
- * @param data 待解密字符串
- * @param key 解密私钥,长度不能够小于8位
- * @return 解密后的字节数组
- * @throws Exception 异常
- */
- public static byte[] decode(String key,byte[] data) throws Exception
- {
- try
- {
- SecureRandom sr = new SecureRandom();
- DESKeySpec dks = new DESKeySpec(key.getBytes());
- SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
- //key的长度不能够小于8位字节
- Key secretKey = keyFactory.generateSecret(dks);
- Cipher cipher = Cipher.getInstance(ALGORITHM_DES);
- IvParameterSpec iv = new IvParameterSpec(key.getBytes());
- AlgorithmParameterSpec paramSpec = iv;
- cipher.init(Cipher.DECRYPT_MODE, secretKey,paramSpec);
- return cipher.doFinal(data);
- } catch (Exception e)
- {
- throw new Exception(e);
- }
- }
- /**
- * 获取编码后的值
- * @param key
- * @param data
- * @return
- * @throws Exception
- */
- public static String decodeValue(String key,String data)
- {
- byte[] datas;
- String value = null;
- try {
- datas = decode(key, Base64.decode(data.getBytes()));
- value = new String(datas);
- } catch (Exception e) {
- value = "";
- }
- return value;
- }
- public static void main(String[] args) throws Exception
- {
- System.out.println("明:abcd ;密:" + Main.encode("asdfwef5","abcd"));
- }
- }
Tags: des加密解密
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