最近 一个项目.net 数据采用3DES加密。
下面分享一下,
这里的KEY采用Base64编码,便用分发,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
一个是C#采用CBC Mode,PKCS7 Padding
另一个是C#采用ECB Mode,PKCS7 Padding
对字符加密时,采用的是UTF-8编码

下面是C#代码

   /// <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, , 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, , 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, , 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, , 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[] { , , , , , , , }; //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();
}
}

C# 3DES加密解密,差点要了命的更多相关文章

  1. iOS 3DES加密解密(一行代码搞定)

    3DES(或称为Triple DES)是三重数据加密算法(TDEA,Triple Data Encryption Algorithm)块密码的通称.它相当于是对每个数据块应用三次DES加密算法.由于计 ...

  2. 简进祥==iOS 3DES加密解密

    3DES(或称为Triple DES)是三重数据加密算法(TDEA,Triple Data Encryption Algorithm)块密码的通称.它相当于是对每个数据块应用三次DES加密算法.由于计 ...

  3. C# Java 3DES加密解密 扩展及修正\0 问题

    注: C#已亲测及做扩展, Java 部分未做验证 /// <summary> /// 3DES加密解密 /// ------------------------------------- ...

  4. 【推荐】JAVA基础◆浅谈3DES加密解密

    国内私募机构九鼎控股打造APP,来就送 20元现金领取地址:http://jdb.jiudingcapital.com/phone.html内部邀请码:C8E245J (不写邀请码,没有现金送)国内私 ...

  5. 3DES加密解密

    C#3DES加密解密,JAVA.PHP可用 using System; using System.Security.Cryptography; using System.Text; namespace ...

  6. Des与3Des加密解密

    /// <summary> /// Des和3Des算法 /// </summary> public class Des { /// <summary> /// D ...

  7. C#的3DES加密解密算法

    C#类如下: using System; using System.Collections.Generic; using System.Text; using System.Security.Cryp ...

  8. JAVA和C# 3DES加密解密

    最近 一个项目.net 要调用JAVA的WEB SERVICE,数据采用3DES加密,涉及到两种语言3DES一致性的问题, 下面分享一下, 这里的KEY采用Base64编码,便用分发,因为Java的B ...

  9. JAVA安卓和C# 3DES加密解密的兼容性问题(2013年8月修改版)

    近 一个项目.net 要调用JAVA的WEB SERVICE,数据采用3DES加密,涉及到两种语言3DES一致性的问题, 下面分享一下, 这里的KEY采用Base64编码,便用分发,因为Java的By ...

随机推荐

  1. 05-Docker私有仓库

    一.介绍私有仓库顾名思义,如果我们不想把docker镜像公开放到公有仓库中,只想在部门或团队内部共享docker镜像,这时私有仓库就来了. 二.私有仓库搭建与配置1.拉取私有仓库镜像,这里说明一下,私 ...

  2. PL/SQL块与表达式

    一.块(Block) 是PL/SQL的基本执行单元,由定义部分,执行部分(必须)和例外处理部分组成. Declare /*定义部分――定义常量.变量.游标.例外.复杂数据类型*/ Begin /*执行 ...

  3. markdown 显示图片的三种方式

    插入网络图片 插入本地图片 base64 图片(data:image/png;base64,iVBORw0KG........) ps:base64编码的图片可以通过站长工具编码 https://to ...

  4. post提交主订单数据(gateway)实现httpapi

    models.proto syntax = "proto3"; package services; import "google/protobuf/timestamp.p ...

  5. 学到了林海峰,武沛齐讲的Day20 装饰器

    import time def timmer(func): #func=test 装饰器架构 def wrapper(): start_time=time.time() func() #就是在运行te ...

  6. MySQL服务优化参数设置参考

    l 通用类: key_buffer_size 含义:用于索引块的缓冲区大小,增加它可得到更好处理的索引(对所有读和多重写). 影响:对于MyISAM表的影响不是很大,MyISAM会使用系统的缓存来存储 ...

  7. java上传超大文件

    上周遇到这样一个问题,客户上传高清视频(1G以上)的时候上传失败. 一开始以为是session过期或者文件大小受系统限制,导致的错误.查看了系统的配置文件没有看到文件大小限制,web.xml中sees ...

  8. divisors 数学

    divisors 数学 给定\(m\)个不同的正整数\(a_1, a_2,\cdots, a_m\),请对\(0\)到\(m\)每一个\(k\)计算,在区间\([1, n]\)里有多少正整数是\(a\ ...

  9. 数据结构实验之查找五:平方之哈希表 (SDUT 3377)

    Hash表的平方探测思路:如果当前这个没存放数值,就放进去,如果当前这个地方Hash [ i ] 已经有数值了,就以平方的间隔左右寻找没有存放数的空白 Hash [ i ]. #include < ...

  10. 【原创】go语言学习(十六)接口

    目录 接口介绍与定义 空接口和类型断言 指针接收和值接收区别 接口嵌套 接口介绍与定义 1. 接口定义了一个对象的行为规范 A. 只定义规范,不实现B. 具体的对象需要实现规范的细节 2.Go中接口定 ...