兼容PHP和Java的des加密解密代码分享
2017-09-07 13:45
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<?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; ?>
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"));
}
}
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
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