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C#, Java, PHP, Python和Javascript等语言的AES加密解密实现【多种语言AES/CBC/PKCS5Padding通用加解密数据】

piikee5年前 (2017-08-04)JAVA专区345

c#里面的AES加密解密


在visual studio中写的c#代码
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);
}
}
}

其中加密后以及解密后的字符串都能成功打印,但Console.WriteLine("=3==");之后的输出就没有了,最后输出个线程返回值0,然后就没有然后了。c#不懂,就不深究了,就已执行的部分,是符合要求了。

Java的AES加密解密:


Java代码,测试也是可以的
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代码,php很多东西都是提供好的,直接用函数,但是php目前所知填充模式只有ZeroPadding,于是其他语言就只能跟着它来了:
<?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,试过也可以,需要在https://code.google.com/p/crypto-js/下载工具包
<script type="text/javascript" src="aes.js"></script>
<script type="text/javascript" src="pad-zeropadding.js"></script>

导入文件,aes.js需要导入crypto-js压缩包中rollups文件夹下的那个aes.js文件,如果引入的是components文件夹下的aes.js是会报错的
<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,最后解密的字符串串在浏览器的控制台里才能看到。

python的AES加密解密


最后加一个Python下的aes,需要安装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'来填充,如果是空格来填充,python加密得到的字符串会跟其他语言不同。另外注意generator在加密的时候使用过,解密的时候需重新生成再解密,否则解密失败。最后得到的字符串,在python控制台看到尾部是多个NUL这样的东西,要这样recovery.rstrip(PADDING)去除掉才是原始字符串。
可以看到aes加密的中间结果是byte[]类型,直接new String(byte[])会看不到有意义的中间结果,这里用的是base64,是因为各个语言都有这样的支持。在同个语言内,也有bytesToHexString这样的方式。
跨语言加解密的要求是:AES/CBC/ZeroPadding 128位模式,key和iv一样,编码统一用utf-8。不支持ZeroPadding的就用NoPadding.

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伸张正义
伸张正义
5年前 (2017-10-26)

python 的实现方式是Zeropadding,不是PKCS5Padding 方式

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