C#, Java, PHP, Python和Javascript幾種語言的AES加密解密實現[轉載]

原文：http://outofmemory.cn/code-snippet/35524/AES-with-javascript-java-csharp-python-or-php

 

c#裏面的AES加密解密

在visual studio中寫的c#代碼

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;

namespace test
{
    class Class1
    {
        static void Main(string[] args)
        {
            Console.WriteLine("I am comming");
            String source = "Test String";
            String encryptData = Class1.Encrypt(source, "1234567812345678", "1234567812345678");
            Console.WriteLine("=1==");
            Console.WriteLine(encryptData);
            Console.WriteLine("=2==");
            String decryptData = Class1.Decrypt("2fbwW9+8vPId2/foafZq6Q==", "1234567812345678", "1234567812345678");
            Console.WriteLine(decryptData);

            Console.WriteLine("=3==");

            Console.WriteLine("I will go out");
        }

        public static string Encrypt(string toEncrypt, string key, string iv)
        {
            byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);
            byte[] ivArray = UTF8Encoding.UTF8.GetBytes(iv);
            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.IV = ivArray;
            rDel.Mode = CipherMode.CBC;
            rDel.Padding = PaddingMode.Zeros;
            ICryptoTransform cTransform = rDel.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

        public static string Decrypt(string toDecrypt, string key, string iv)
        {
            byte[] keyArray = UTF8Encoding.UTF8.GetBytes(key);
            byte[] ivArray = UTF8Encoding.UTF8.GetBytes(iv);
            byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);
            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.IV = ivArray;
            rDel.Mode = CipherMode.CBC;
            rDel.Padding = PaddingMode.Zeros;
            ICryptoTransform cTransform = rDel.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return UTF8Encoding.UTF8.GetString(resultArray);
        }
    }
}

其中加密後以及解密後的字符串都能成功打印，但Console.WriteLine("=3==");之後的輸出就沒有了，最後輸出個線程返回值0，然後就沒有然後了。c#不懂，就不深究了，就已執行的部分，是符合要求了。

Java的AES加密解密：

java代碼，測試也是可以的

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

import org.junit.Test;

...

    @Test
    public void testCrossLanguageEncrypt() throws Exception{
        System.out.println(encrypt());
        System.out.println(desEncrypt());
    }

    public static String encrypt() throws Exception {
        try {
            String data = "Test String";
            String key = "1234567812345678";
            String iv = "1234567812345678";
            Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
            int blockSize = cipher.getBlockSize();
            byte[] dataBytes = data.getBytes();
            int plaintextLength = dataBytes.length;
            if (plaintextLength % blockSize != 0) {
                plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
            }
            byte[] plaintext = new byte[plaintextLength];
            System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);

            SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
            IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
            cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
            byte[] encrypted = cipher.doFinal(plaintext);
            return new sun.misc.BASE64Encoder().encode(encrypted);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    public static String desEncrypt() throws Exception {
        try
        {
            String data = "2fbwW9+8vPId2/foafZq6Q==";
            String key = "1234567812345678";
            String iv = "1234567812345678";

            byte[] encrypted1 = new sun.misc.BASE64Decoder().decodeBuffer(data);

            Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
            SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
            IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());

            cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original);
            return originalString;
        }
        catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

php的AES加密解密

php代碼，php很多東西都是提供好的，直接用函數，但是php目前所知填充模式只有ZeroPadding，於是其他語言就只能跟着它來了：

<?php
$privateKey = "1234567812345678";
$iv     = "1234567812345678";
$data   = "Test String";

//加密
$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $privateKey, $data, MCRYPT_MODE_CBC, $iv);
echo($encrypted);
echo '<br/>';
echo(base64_encode($encrypted));
echo '<br/>';

//解密
$encryptedData = base64_decode("2fbwW9+8vPId2/foafZq6Q==");
$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $privateKey, $encryptedData, MCRYPT_MODE_CBC, $iv);
echo($decrypted);
?>

Javascript下aes加解密，試過也可以，需要在https://code.google.com/p/crypto-js/下載工具包

    <script type="text/javascript" src="aes.js"></script>
    <script type="text/javascript" src="pad-zeropadding.js"></script>

導入文件，aes.js需要導入crypto-js壓縮包中rollups文件夾下的那個aes.js文件，如果引入的是components文件夾下的aes.js是會報錯的

 <script type="text/javascript">
        var data = "Test String";
        var key  = CryptoJS.enc.Latin1.parse('1234567812345678');
        var iv   = CryptoJS.enc.Latin1.parse('1234567812345678');

        //加密
        var encrypted = CryptoJS.AES.encrypt(data,key,{iv:iv,mode:CryptoJS.mode.CBC,padding:CryptoJS.pad.ZeroPadding});

        document.write(encrypted.ciphertext);
        document.write('<br/>');
        document.write(encrypted.key);
        document.write('<br/>');
        document.write(encrypted.iv);
        document.write('<br/>');
        document.write(encrypted.salt);
        document.write('<br/>');
        document.write(encrypted);
        document.write('<br/>');

        //解密
        var decrypted = CryptoJS.AES.decrypt(encrypted,key,{iv:iv,padding:CryptoJS.pad.ZeroPadding});
        console.log(decrypted.toString(CryptoJS.enc.Utf8));
    </script>

 

成功加解密，最後解密的字符串串在瀏覽器的控制檯裏才能看到。

python的AES加密解密

最後加一個python下的aes，需要安裝python Crypto：

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from Crypto.Cipher import AES
import base64
PADDING = '\0'
#PADDING = ' '
pad_it = lambda s: s+(16 - len(s)%16)*PADDING  
key = '1234567812345678'
iv = '1234567812345678'
source = 'Test String'
generator = AES.new(key, AES.MODE_CBC, iv)
crypt = generator.encrypt(pad_it(source))   
cryptedStr = base64.b64encode(crypt)
print cryptedStr
generator = AES.new(key, AES.MODE_CBC, iv)
recovery = generator.decrypt(crypt)
print recovery.rstrip(PADDING)

注意python下需要用'\0'來填充，如果是空格來填充，python加密得到的字符串會跟其他語言不同。另外注意generator在加密的時候使用過，解密的時候需重新生成再解密，否則解密失敗。最後得到的字符串，在python控制檯看到尾部是多個NUL這樣的東西，要這樣recovery.rstrip(PADDING)去除掉纔是原始字符串。

可以看到aes加密的中間結果是byte[]類型，直接new String(byte[])會看不到有意義的中間結果，這裏用的是base64，是因爲各個語言都有這樣的支持。在同個語言內，也有bytesToHexString這樣的方式。

跨語言加解密的要求是：AES/CBC/ZeroPadding 128位模式，key和iv一樣，編碼統一用utf-8。不支持ZeroPadding的就用NoPadding.