aes加密算法python语言实现_C#, Java, PHP, Python和Javascript几种语言的AES加密解密实现[转载]...

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

c#里面的AES加密解密

在visual studio中写的c#代码

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Security.Cryptography;namespacetest

{classClass1

{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, stringiv)

{byte[] keyArray =UTF8Encoding.UTF8.GetBytes(key);byte[] ivArray =UTF8Encoding.UTF8.GetBytes(iv);byte[] toEncryptArray =UTF8Encoding.UTF8.GetBytes(toEncrypt);

RijndaelManaged rDel= newRijndaelManaged();

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, stringiv)

{byte[] keyArray =UTF8Encoding.UTF8.GetBytes(key);byte[] ivArray =UTF8Encoding.UTF8.GetBytes(iv);byte[] toEncryptArray =Convert.FromBase64String(toDecrypt);

RijndaelManaged rDel= newRijndaelManaged();

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);returnUTF8Encoding.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

importjavax.crypto.Cipher;importjavax.crypto.spec.IvParameterSpec;importjavax.crypto.spec.SecretKeySpec;importorg.junit.Test;

...

@Testpublic void testCrossLanguageEncrypt() throwsException{

System.out.println(encrypt());

System.out.println(desEncrypt());

}public static String encrypt() throwsException {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= newIvParameterSpec(iv.getBytes());

cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);byte[] encrypted =cipher.doFinal(plaintext);return newsun.misc.BASE64Encoder().encode(encrypted);

}catch(Exception e) {

e.printStackTrace();return null;

}

}public static String desEncrypt() throwsException {try{

String data= "2fbwW9+8vPId2/foafZq6Q==";

String key= "1234567812345678";

String iv= "1234567812345678";byte[] encrypted1 = newsun.misc.BASE64Decoder().decodeBuffer(data);

Cipher cipher= Cipher.getInstance("AES/CBC/NoPadding");

SecretKeySpec keyspec= new SecretKeySpec(key.getBytes(), "AES");

IvParameterSpec ivspec= newIvParameterSpec(iv.getBytes());

cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);byte[] original =cipher.doFinal(encrypted1);

String originalString= newString(original);returnoriginalString;

}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:

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

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

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('
');

document.write(encrypted.key);

document.write('
');

document.write(encrypted.iv);

document.write('
');

document.write(encrypted.salt);

document.write('
');

document.write(encrypted);

document.write('
');//解密

var decrypted =CryptoJS.AES.decrypt(encrypted,key,{iv:iv,padding:CryptoJS.pad.ZeroPadding});

console.log(decrypted.toString(CryptoJS.enc.Utf8));

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 importAESimportbase64

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)printcryptedStr

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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