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AES加密PH 和JAVA互通(AES/ECB/PKCS5Padding)

今天在做一个和java程序接口的架接,java那边需要我这边(PHP)对传过去的值进行AES对称加密,接口返回的结果也是加密过的(就要用到解密),然后试了很多办法,也一一对应了AES的key密钥值,偏移量(IV)的值,都还是不能和java加密解密的结果一样,我很郁闷,我很焦躁。接着我就去找了一些文档,结果发现PHP里面补码方式只有:ZeroPadding这一种方式,而java接口那边是用PKCS5Padding补码方式,发现了问题所在,就编写了如下PHP实现AES/ECB/PKCS5Padding的加密解密方式。

一. php代码

<?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 );

二. java 代码

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));
    }
}


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发布时间 :2017-02-28 20:16:04
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