三沣开发知识 购物 网址 游戏 小说 歌词 地图 快照 股票 美女 新闻 笑话 | 汉字 软件 日历 阅读 下载 图书馆 开发 租车 短信 China
TxT小说阅读器
↓语音阅读,小说下载,古典文学↓
图片批量下载器
↓批量下载图片,美女图库↓
多播视频美女直播
↓电视,电影,美女直播,迅雷资源↓
一键清除垃圾
↓轻轻一点,清除系统垃圾↓
vbs/VBScript DOS/BAT hta htc python perl 游戏相关 VBA 远程脚本 ColdFusion ruby专题
autoit seraphzone PowerShell linux shell Lua Golang Erlang 其它教程 CSS/HTML/Xhtml
html5 CSS XML/XSLT Dreamweaver教程 经验交流 开发者乐园 Android开发资料
站长资讯 .NET新手 ASP.NET C# WinForm Silverlight WCF CLR WPF XNA VisualStudio ASP.NET-MVC .NET控件开发 EntityFramework WinRT-Metro Java C++ PHP Delphi Python Ruby C语言 Erlang Go Swift Scala R语言 Verilog 其它语言 架构设计 面向对象 设计模式 领域驱动 Html-Css JavaScript jQuery HTML5 SharePoint GIS技术 SAP OracleERP DynamicsCRM K2 BPM 信息安全 企业信息 Android开发 iOS开发 WindowsPhone WindowsMobile 其他手机 敏捷开发 项目管理 软件工程 SQLServer Oracle MySQL NoSQL 其它数据库 Windows7 WindowsServer Linux
  IT知识库 -> C# -> 3Des加解密 C# -> 正文阅读
 

[C#]3Des加解密 C#

3Des加解密 C# Java的Byte范围为-128至127,c#的Byte范围是0-255.
核心是确定Mode和Padding,关于这两个的意思可以搜索3DES算法相关文章。
C#采用CBC Mode,PKCS7 Padding,Java采用CBC Mode,PKCS5Padding Padding C#采用ECB Mode,PKCS7 Padding,Java采用ECB Mode,PKCS5Padding Padding
其中Java的ECB模式不需要IV 对字符加密时,双方采用的都是UTF-8编码
C#

/// <summary>  
/// DES3加密解密  
/// </summary>  
public class Des3  
{  
    #region CBC模式**  
    /// <summary>  
    /// DES3 CBC模式加密  
    /// </summary>  
    /// <param name="key">密钥</param>  
    /// <param name="iv">IV</param>  
    /// <param name="data">明文的byte数组</param>  
    /// <returns>密文的byte数组</returns>  
    public static byte[] Des3EncodeCBC( byte[] key, byte[] iv, byte[] data )  
    {  
        //复制于MSDN  
        try  
        {  
            // Create a MemoryStream.  
            MemoryStream mStream = new MemoryStream();  
            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  
            tdsp.Mode = CipherMode.CBC;             //默认值  
            tdsp.Padding = PaddingMode.PKCS7;       //默认值  
            // Create a CryptoStream using the MemoryStream   
            // and the passed key and initialization vector (IV).  
            CryptoStream cStream = new CryptoStream( mStream,  
                tdsp.CreateEncryptor( key, iv ),  
                CryptoStreamMode.Write );  
            // Write the byte array to the crypto stream and flush it.  
            cStream.Write( data, 0, data.Length );  
            cStream.FlushFinalBlock();  
            // Get an array of bytes from the   
            // MemoryStream that holds the   
            // encrypted data.  
            byte[] ret = mStream.ToArray();  
            // Close the streams.  
            cStream.Close();  
            mStream.Close();  
            // Return the encrypted buffer.  
            return ret;  
        }  
        catch ( CryptographicException e )  
        {  
            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  
            return null;  
        }  
    }  
    /// <summary>  
    /// DES3 CBC模式解密  
    /// </summary>  
    /// <param name="key">密钥</param>  
    /// <param name="iv">IV</param>  
    /// <param name="data">密文的byte数组</param>  
    /// <returns>明文的byte数组</returns>  
    public static byte[] Des3DecodeCBC( byte[] key, byte[] iv, byte[] data )  
    {  
        try  
        {  
            // Create a new MemoryStream using the passed   
            // array of encrypted data.  
            MemoryStream msDecrypt = new MemoryStream( data );  
            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  
            tdsp.Mode = CipherMode.CBC;  
            tdsp.Padding = PaddingMode.PKCS7;  
            // Create a CryptoStream using the MemoryStream   
            // and the passed key and initialization vector (IV).  
            CryptoStream csDecrypt = new CryptoStream( msDecrypt,  
                tdsp.CreateDecryptor( key, iv ),  
                CryptoStreamMode.Read );  
            // Create buffer to hold the decrypted data.  
            byte[] fromEncrypt = new byte[data.Length];  
            // Read the decrypted data out of the crypto stream  
            // and place it into the temporary buffer.  
            csDecrypt.Read( fromEncrypt, 0, fromEncrypt.Length );  
            //Convert the buffer into a string and return it.  
            return fromEncrypt;  
        }  
        catch ( CryptographicException e )  
        {  
            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  
            return null;  
        }  
    }  
    #endregion  

    #region ECB模式  
    /// <summary>  
    /// DES3 ECB模式加密  
    /// </summary>  
    /// <param name="key">密钥</param>  
    /// <param name="iv">IV(当模式为ECB时,IV无用)</param>  
    /// <param name="str">明文的byte数组</param>  
    /// <returns>密文的byte数组</returns>  
    public static byte[] Des3EncodeECB( byte[] key, byte[] iv, byte[] data )  
    {  
        try  
        {  
            // Create a MemoryStream.  
            MemoryStream mStream = new MemoryStream();  
            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  
            tdsp.Mode = CipherMode.ECB;  
            tdsp.Padding = PaddingMode.PKCS7;  
            // Create a CryptoStream using the MemoryStream   
            // and the passed key and initialization vector (IV).  
            CryptoStream cStream = new CryptoStream( mStream,  
                tdsp.CreateEncryptor( key, iv ),  
                CryptoStreamMode.Write );  
            // Write the byte array to the crypto stream and flush it.  
            cStream.Write( data, 0, data.Length );  
            cStream.FlushFinalBlock();  
            // Get an array of bytes from the   
            // MemoryStream that holds the   
            // encrypted data.  
            byte[] ret = mStream.ToArray();  
            // Close the streams.  
            cStream.Close();  
            mStream.Close();  
            // Return the encrypted buffer.  
            return ret;  
        }  
        catch ( CryptographicException e )  
        {  
            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  
            return null;  
        }  
    }  
    /// <summary>  
    /// DES3 ECB模式解密  
    /// </summary>  
    /// <param name="key">密钥</param>  
    /// <param name="iv">IV(当模式为ECB时,IV无用)</param>  
    /// <param name="str">密文的byte数组</param>  
    /// <returns>明文的byte数组</returns>  
    public static byte[] Des3DecodeECB( byte[] key, byte[] iv, byte[] data )  
    {  
        try  
        {  
            // Create a new MemoryStream using the passed   
            // array of encrypted data.  
            MemoryStream msDecrypt = new MemoryStream( data );  
            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  
            tdsp.Mode = CipherMode.ECB;  
            tdsp.Padding = PaddingMode.PKCS7;  
            // Create a CryptoStream using the MemoryStream   
            // and the passed key and initialization vector (IV).  
            CryptoStream csDecrypt = new CryptoStream( msDecrypt,  
                tdsp.CreateDecryptor( key, iv ),  
                CryptoStreamMode.Read );  
            // Create buffer to hold the decrypted data.  
            byte[] fromEncrypt = new byte[data.Length];  
            // Read the decrypted data out of the crypto stream  
            // and place it into the temporary buffer.  
            csDecrypt.Read( fromEncrypt, 0, fromEncrypt.Length );  
            //Convert the buffer into a string and return it.  
            return fromEncrypt;  
        }  
        catch ( CryptographicException e )  
        {  
            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  
            return null;  
        }  
    }  
    #endregion  

    /// <summary>  
    /// 类测试  
    /// </summary>  
    public static void Test()  
    {  
        System.Text.Encoding utf8 = System.Text.Encoding.UTF8;  
        //key为abcdefghijklmnopqrstuvwx的Base64编码  
        byte[] key = Convert.FromBase64String( "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4" );  
        byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时,IV无用  
        byte[] data = utf8.GetBytes( "中国ABCabc123" );  
        System.Console.WriteLine( "ECB模式:" );  
        byte[] str1 = Des3.Des3EncodeECB( key, iv, data );  
        byte[] str2 = Des3.Des3DecodeECB( key, iv, str1 );  
        System.Console.WriteLine( Convert.ToBase64String( str1 ) );  
        System.Console.WriteLine( System.Text.Encoding.UTF8.GetString( str2 ) );  
        System.Console.WriteLine();  
        System.Console.WriteLine( "CBC模式:" );  
        byte[] str3 = Des3.Des3EncodeCBC( key, iv, data );  
        byte[] str4 = Des3.Des3DecodeCBC( key, iv, str3 );  
        System.Console.WriteLine( Convert.ToBase64String( str3 ) );  
        System.Console.WriteLine( utf8.GetString( str4 ) );  
        System.Console.WriteLine();  
    }  
}

java

import java.security.Key;  
import javax.crypto.Cipher;  
import javax.crypto.SecretKeyFactory;  
import javax.crypto.spec.DESedeKeySpec;  
import javax.crypto.spec.IvParameterSpec;  
import sun.misc.BASE64Decoder;  
import sun.misc.BASE64Encoder;  
public class Des3 {  
    public static void main(String[] args) throws Exception {  
        byte[] key=new BASE64Decoder().decodeBuffer("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4");  
        byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 };  
        byte[] data="中国ABCabc123".getBytes("UTF-8");  
          
        System.out.println("ECB加密解密");  
        byte[] str3 = des3EncodeECB(key,data );  
        byte[] str4 = ees3DecodeECB(key, str3);  
        System.out.println(new BASE64Encoder().encode(str3));  
        System.out.println(new String(str4, "UTF-8"));  
        System.out.println();  
        System.out.println("CBC加密解密");  
        byte[] str5 = des3EncodeCBC(key, keyiv, data);  
        byte[] str6 = des3DecodeCBC(key, keyiv, str5);  
        System.out.println(new BASE64Encoder().encode(str5));  
        System.out.println(new String(str6, "UTF-8"));  
    }  
    /** 
     * ECB加密,不要IV 
     * @param key 密钥 
     * @param data 明文 
     * @return Base64编码的密文 
     * @throws Exception 
     */  
    public static byte[] des3EncodeECB(byte[] key, byte[] data)  
            throws Exception {  
        Key deskey = null;  
        DESedeKeySpec spec = new DESedeKeySpec(key);  
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
        deskey = keyfactory.generateSecret(spec);  
        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");  
        cipher.init(Cipher.ENCRYPT_MODE, deskey);  
        byte[] bOut = cipher.doFinal(data);  
        return bOut;  
    }  
    /** 
     * ECB解密,不要IV 
     * @param key 密钥 
     * @param data Base64编码的密文 
     * @return 明文 
     * @throws Exception 
     */  
    public static byte[] ees3DecodeECB(byte[] key, byte[] data)  
            throws Exception {  
        Key deskey = null;  
        DESedeKeySpec spec = new DESedeKeySpec(key);  
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
        deskey = keyfactory.generateSecret(spec);  
        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");  
        cipher.init(Cipher.DECRYPT_MODE, deskey);  
        byte[] bOut = cipher.doFinal(data);  
        return bOut;  
    }  
    /** 
     * CBC加密 
     * @param key 密钥 
     * @param keyiv IV 
     * @param data 明文 
     * @return Base64编码的密文 
     * @throws Exception 
     */  
    public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data)  
            throws Exception {  
        Key deskey = null;  
        DESedeKeySpec spec = new DESedeKeySpec(key);  
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
        deskey = keyfactory.generateSecret(spec);  
        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");  
        IvParameterSpec ips = new IvParameterSpec(keyiv);  
        cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);  
        byte[] bOut = cipher.doFinal(data);  
        return bOut;  
    }  
    /** 
     * CBC解密 
     * @param key 密钥 
     * @param keyiv IV 
     * @param data Base64编码的密文 
     * @return 明文 
     * @throws Exception 
     */  
    public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data)  
            throws Exception {  
        Key deskey = null;  
        DESedeKeySpec spec = new DESedeKeySpec(key);  
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  
        deskey = keyfactory.generateSecret(spec);  
        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");  
        IvParameterSpec ips = new IvParameterSpec(keyiv);  
        cipher.init(Cipher.DECRYPT_MODE, deskey, ips);  
        byte[] bOut = cipher.doFinal(data);  
        return bOut;  
    }
}

  C# 最新文章
一个小时学会MySQL数据库
使用重绘项美化WinForm中的控件
c# Http下载文件
Autofac的简单使用
C#中的装箱(inboxing)和拆箱(unboxing)(简
C# Random 实现 long型随机数
委托与匿名委托
02、Win
C#最实用的快捷键
C#矩阵运算类库
上一篇文章      下一篇文章      查看所有文章
加:2017-10-12 23:21:44  更:2017-10-12 23:21:50 
 
技术频道: 站长资讯 .NET新手区 ASP.NET C# WinForm Silverlight WCF CLR WPF XNA Visual Studio ASP.NET MVC .NET控件开发 Entity Framework WinRT/Metro Java C++ PHP Delphi Python Ruby C语言 Erlang Go Swift Scala R语言 Verilog 其它语言 架构设计 面向对象 设计模式 领域驱动设计 Html/Css JavaScript jQuery HTML5 SharePoint GIS技术 SAP Oracle ERP Dynamics CRM K2 BPM 信息安全 企业信息化其他 Android开发 iOS开发 Windows Phone Windows Mobile 其他手机开发 敏捷开发 项目与团队管理 软件工程其他 SQL Server Oracle MySQL NoSQL 其它数据库 Windows 7 Windows Server Linux
脚本语言: vbs/VBScript DOS/BAT hta htc python perl 游戏相关 VBA 远程脚本 ColdFusion ruby专题 autoit seraphzone PowerShell linux shell Lua Golang Erlang 其它教程
网站开发: CSS/HTML/Xhtml html5 CSS XML/XSLT Dreamweaver教程 经验交流 开发者乐园 Android开发资料
360图书馆 软件开发资料 文字转语音 购物精选 软件下载 美食菜谱 新闻资讯 电影视频 小游戏 Chinese Culture 股票 租车
生肖星座 三丰软件 视频 开发 短信 中国文化 网文精选 搜图网 美图 阅读网 多播 租车 短信 看图 日历 万年历 2017年10日历
2017-10-22 7:13:46
多播视频美女直播
↓电视,电影,美女直播,迅雷资源↓
TxT小说阅读器
↓语音阅读,小说下载,古典文学↓
一键清除垃圾
↓轻轻一点,清除系统垃圾↓
图片批量下载器
↓批量下载图片,美女图库↓
  网站联系: qq:121756557 email:121756557@qq.com  IT知识库