兼容PHP和Java的des加密解密代码分享

只看该作者 · 发表于 2018-2-14 05:56:53

         php代码:
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 ( $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"));
}
}
PS：关于加密技术，本站还提供了如下加密工具供大家参考使用：
MD5在线加密工具：http://tools.jb51.net/password/CreateMD5Password
Escape加密/解密工具：http://tools.jb51.net/password/escapepwd
在线SHA1加密工具：http://tools.jb51.net/password/sha1encode
短链(短网址)在线生成工具：http://tools.jb51.net/password/dwzcreate
短链(短网址)在线还原工具：http://tools.jb51.net/password/unshorturl
高强度密码生成器：http://tools.jb51.net/password/CreateStrongPassword


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