PHP、Java des加密解密实例

$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB); 
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); 
$key = "This is a very secret key";//密钥 
$text = "Meet me at 11 o'clock behind the monument.";//需要加密的内容 
echo ($text) . "\n"; 
 
$crypttext =base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $text, MCRYPT_MODE_ECB, $iv)); 
echo $crypttext . "\n";//加密后的内容 
 
echo mcrypt_decrypt(MCRYPT_RIJNDAEL_256,$key,base64_decode($crypttext),MCRYPT_MODE_ECB,$iv);//解密后的内容 

<?php 
class Security { 
    public static function encrypt($input, $key) { 
        $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB); 
        $input = Security::pkcs5_pad($input, $size); 
        $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_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; 
    } 
  
    private static function pkcs5_pad ($text, $blocksize) { 
        $pad = $blocksize - (strlen($text) % $blocksize); 
        return $text . str_repeat(chr($pad), $pad); 
    } 
  
    public static function decrypt($sStr, $sKey) { 
        $decrypted= mcrypt_decrypt( 
        MCRYPT_RIJNDAEL_128, 
        $sKey, 
        base64_decode($sStr), 
        MCRYPT_MODE_ECB 
    ); 
  
        $dec_s = strlen($decrypted); 
        $padding = ord($decrypted[$dec_s-1]); 
        $decrypted = substr($decrypted, 0, -$padding); 
        return $decrypted; 
    }    
} 
  
  
  
$key = "1234567891234567"; 
$data = "example"; 
  
$value = Security::encrypt($data , $key ); 
echo $value.'<br/>'; 
echo Security::decrypt($value, $key ); 

import javax.crypto.Cipher; 
import javax.crypto.spec.SecretKeySpec; 
  
import org.apache.commons.codec.binary.Base64; 
  
public class Security { 
    public static String encrypt(String input, String key){ 
        byte[] crypted = null; 
        try{ 
            SecretKeySpec skey = new SecretKeySpec(key.getBytes(), "AES"); 
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); 
            cipher.init(Cipher.ENCRYPT_MODE, skey); 
            crypted = cipher.doFinal(input.getBytes()); 
        }catch(Exception e){ 
        System.out.println(e.toString()); 
    } 
    return new String(Base64.encodeBase64(crypted)); 
} 
  
    public static String decrypt(String input, String key){ 
        byte[] output = null; 
        try{ 
            SecretKeySpec skey = new SecretKeySpec(key.getBytes(), "AES"); 
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); 
            cipher.init(Cipher.DECRYPT_MODE, skey); 
            output = cipher.doFinal(Base64.decodeBase64(input)); 
            }catch(Exception e){ 
            System.out.println(e.toString()); 
        } 
        return new String(output); 
    } 
  
    public static void main(String[] args) { 
        String key = "1234567891234567"; 
        String data = "example"; 
         
        System.out.println(Security.encrypt(data, key)); 
         
        System.out.println(Security.decrypt(Security.encrypt(data, key), key)); 
         
             
    }    
}