Java、C#双语版配套AES加解密示例

2021-09-23 23:34:16

今天在搞一款手游，使用U3D，遇到一个字符串加解密的功能需求
客户端和服务器在通迅时的一个加解密的验证

JAVA
复制代码
/*

  • To change this license header, choose License Headers in Project Properties.
  • To change this template file, choose Tools | Templates
  • and open the template in the editor.
    */

package teststring;

import java.io.IOException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;

/**
*

  • @author Acer
    */

public class Main {

/**
 * @param args the command line arguments
 */
public static void main(String[] args) throws IOException, Exception {
    // TODO code application logic here
    
    String e;
    String d;
    
    try {
        
        e = AES.AESEncrypt("fdafdsaff2fwe23fdsa9");
        System.out.println(e);
        
        
        d = AES.AESDecrypt(e);
        System.out.println(d);
        
        
        
    } catch (NoSuchAlgorithmException ex) {
        
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        
    } catch (NoSuchPaddingException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    } catch (InvalidKeyException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    } catch (InvalidAlgorithmParameterException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    } catch (IllegalBlockSizeException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    } catch (BadPaddingException ex) {
        Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
    }

    
    System.in.read();
    
  
    
}

}

/*

  • To change this license header, choose License Headers in Project Properties.
  • To change this template file, choose Tools | Templates
  • and open the template in the editor.
    */

package teststring;

import java.nio.charset.Charset;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;

/**
*

  • @author Acer
    */

public class AES {


private static String Key()
{
    return "1234567812345678";
}

private static String IV()
{
    return "1234567812345678";
}

/**
 * 
 * 
 * @param plainStr
 * @return
 * @throws NoSuchAlgorithmException
 * @throws NoSuchPaddingException 
 */
public static String AESEncrypt(String plainStr) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException
{
    
    
    byte[] ks = Key().getBytes(Charset.forName("UTF-8"));        
    //System.out.println(printByte(ks));
    
    
    byte[] iv = IV().getBytes(Charset.forName("UTF-8"));   
    //System.out.println(printByte(iv));
    
    
    byte[] ps = plainStr.getBytes(Charset.forName("UTF-8"));
    //System.out.println(printByte(ps));
    

    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
     
    
    SecretKeySpec keySpec = new SecretKeySpec(ks,"AES");
    
     
    AlgorithmParameterSpec ivSpec = new IvParameterSpec(iv);
   
    c.init(Cipher.ENCRYPT_MODE, keySpec,ivSpec);
     
    byte[] mStream = c.doFinal(ps);
     
    String encrypt;
    encrypt = new Base64().encodeToString(mStream);//printByte(mStream);//
   
    return encrypt;
}

public static String AESDecrypt(String encryptStr) throws Exception 
{
    
    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
    
    byte[] ks = Key().getBytes(Charset.forName("UTF-8"));
    SecretKeySpec keySpec = new SecretKeySpec(ks,"AES");  
    
    byte[] iv = IV().getBytes(Charset.forName("UTF-8"));
    AlgorithmParameterSpec ivSpec = new IvParameterSpec(iv);
    
    c.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
    
    byte[] bytes = new Base64().decode(encryptStr);
    bytes = c.doFinal(bytes);
    return new String(bytes, "UTF-8");
}

public static String printByte(byte[] value)
{
    String s = "\n";

    for(int i=0;i<value.length;i++)
    {

        s += value[i];
        s += ",";

    }

    return s;

}

}
复制代码

C#
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using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class TestAES : MonoBehaviour {

// Use this for initialization
void Start () {

    GameObject text = GameObject.Find("Canvas/Text");

    string e = AES.AESEncrypt("fdafdsaff2fwe23fdsa9");

    Debug.Log("e:" + e);

    text.GetComponent<Text>().text += e + "\n";

    string d = AES.AESDecrypt(e);

    Debug.Log("d:" + d);

    //text.GetComponent<Text>().text += d + "\n";

}
 
// Update is called once per frame
void Update () {
 
}

}

using UnityEngine;
using System.Collections;
using System.Text;
using System;
using System.Security.Cryptography;
using System.IO;

/// 

/// AES加密解密
/// </summary>

public class AES
{

/// <summary>
        /// 获取密钥
        /// </summary>
private static string Key
{
    get { return @"1234567812345678"; }
}

/// <summary>
        /// 获取向量
        /// </summary>
private static string IV
{
    get { return @"1234567812345678"; }
}

/// <summary>
        /// AES加密
        /// </summary>
        /// <param name="plainStr">明文字符串</param>
        /// <returns>密文</returns>
public static string AESEncrypt(string plainStr)
{
    byte[] bKey = Encoding.UTF8.GetBytes(Key);
    Debug.Log(printByte(bKey));

    byte[] bIV = Encoding.UTF8.GetBytes(IV);
    Debug.Log(printByte(bIV));

    byte[] byteArray = Encoding.UTF8.GetBytes(plainStr);
    Debug.Log(printByte(byteArray));

    string encrypt = null;
    Rijndael aes = Rijndael.Create();
    try
    {
        using (MemoryStream mStream = new MemoryStream())
        {
            using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateEncryptor(bKey, bIV), CryptoStreamMode.Write))
            {
                cStream.Write(byteArray, 0, byteArray.Length);
                cStream.FlushFinalBlock();

                byte[] bb = mStream.ToArray();

                encrypt = Convert.ToBase64String(bb);//printByte(bb);//
            }
        }
    }
    catch(Exception exd)
    {
        Debug.Log("Exception ：AESEncrypt " + exd.Message);
    }

    aes.Clear();

    return encrypt;
}

/// <summary>
        /// AES加密
        /// </summary>
        /// <param name="plainStr">明文字符串</param>
        /// <param name="returnNull">加密失败时是否返回 null，false 返回 String.Empty</param>
        /// <returns>密文</returns>
public static string AESEncrypt(string plainStr, bool returnNull)
{
    string encrypt = AESEncrypt(plainStr);
    return returnNull ? encrypt : (encrypt == null ? String.Empty : encrypt);
}

/// <summary>
        /// AES解密
        /// </summary>
        /// <param name="encryptStr">密文字符串</param>
        /// <returns>明文</returns>
public static string AESDecrypt(string encryptStr)
{
    byte[] bKey = Encoding.UTF8.GetBytes(Key);
    byte[] bIV = Encoding.UTF8.GetBytes(IV);
    byte[] byteArray = Convert.FromBase64String(encryptStr);

    string decrypt = null;
    Rijndael aes = Rijndael.Create();
    try
    {
        using (MemoryStream mStream = new MemoryStream())
        {
            using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateDecryptor(bKey, bIV), CryptoStreamMode.Write))
            {
                cStream.Write(byteArray, 0, byteArray.Length);
                cStream.FlushFinalBlock();
                decrypt = Encoding.UTF8.GetString(mStream.ToArray());
            }
        }
    }
    catch { }
    aes.Clear();

    return decrypt;
}

/// <summary>
        /// AES解密
        /// </summary>
        /// <param name="encryptStr">密文字符串</param>
        /// <param name="returnNull">解密失败时是否返回 null，false 返回 String.Empty</param>
        /// <returns>明文</returns>
public static string AESDecrypt(string encryptStr, bool returnNull)
{
    string decrypt = AESDecrypt(encryptStr);
    return returnNull ? decrypt : (decrypt == null ? String.Empty : decrypt);
}

public static string printByte(byte[] value)
{
    string s = string.Empty;

    for(int i=0;i<value.Length;i++)
    {

        s += value[i];
        s += ",";

    }

    return s;

}

}
　　本文转自jiahuafu博客园博客，原文链接http://www.cnblogs.com/jiahuafu/p/6475277.html如需转载请自行联系原作者

jiahuafu

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