java php DES 加密解密

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;
public class DES {

	private byte[] desKey;

	public DES(String desKey) {
		this.desKey = desKey.getBytes();
	}

	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;
	}

	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;
	}

	public String encrypt(String input) throws Exception {
		return base64Encode(desEncrypt(input.getBytes()));
	}

	public String decrypt(String input) throws Exception {
		byte[] result = base64Decode(input);
		return new String(desDecrypt(result));
	}

	public static String base64Encode(byte[] s) {
		if (s == null)
			return null;
		BASE64Encoder b = new sun.misc.BASE64Encoder();
		return b.encode(s);
	}

	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 = "abcdefgh";
		String input = "a";
		DES crypt = new DES(key);
		System.out.println("Encode:" + crypt.encrypt(input));
		System.out.println("Decode:" + crypt.decrypt(crypt.encrypt(input)));
	}
}

php 方法一

<?php
class DES1 {	
	var $key;		
	function 	DES1($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 = "abcdefgh";
		$input = "a";
		$crypt = new DES1($key);
		echo "Encode:".$crypt->encrypt($input)."<br/>";
		echo "Decode:".$crypt->decrypt($crypt->encrypt($input));
?> 

php 方法2
使用phpseclib中的DES

<?php
	include('DES.php');

	$des = new Crypt_DES();

	$des->setKey('abcdefgh');
	$plaintext = 'a';
	$jiami = base64_encode($des->encrypt($plaintext));
	echo "Encode:".$jiami."<br/>";
	echo "Decode:".$des->decrypt(base64_decode($jiami));
?>

评论

2 楼 zohog 2013-12-24  

谢谢，可能要用到了，我弄php端

1 楼 tss0823 2012-06-16  

非常感谢楼主，帮我解决了一个大问题。。