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...

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1、問題描述

在與C同僚調試的時候發現，Java加密的檔案，C語言解析不了，後面找了很多才找到解決方案。

2、操作方法

1、Java加密解密

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;

}

}

2、C加密解密

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);

}

}

}

3、PHP加密解密

$privateKey = "1234567812345678";

$iv = "1234567812345678";

$data = "Test String";

//加密

$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);

?>

4、JS加密解密

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));

5、python加密解密

#!/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.

3、參考網站