aes加密算法python語言實作_C#, Java, PHP, Python和Javascript幾種語言的AES加密解密實作[轉載]...

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

c#裡面的AES加密解密

在visual studio中寫的c#代碼

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);

}

}

}

其中加密後以及解密後的字元串都能成功列印，但Console.WriteLine("=3==");之後的輸出就沒有了，最後輸出個線程傳回值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

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目前所知填充模式隻有ZeroPadding，于是其他語言就隻能跟着它來了：

$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，試過也可以，需要在https://code.google.com/p/crypto-js/下載下傳工具包

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

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，最後解密的字元串串在浏覽器的控制台裡才能看到。

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 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'來填充，如果是空格來填充，python加密得到的字元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。最後得到的字元串，在python控制台看到尾部是多個NUL這樣的東西，要這樣recovery.rstrip(PADDING)去除掉才是原始字元串。

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，這裡用的是base64，是因為各個語言都有這樣的支援。在同個語言内，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。不支援ZeroPadding的就用NoPadding.