C# 3DES加密解密

2013-07-10 05:10:33 943 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

C# 3DES加密解密 /// /// DES3加密解密 /// public class Des3 { #region CBC模式** /// /// DES3 CBC模式加密 /// /// 密钥 /// IV /// 明文的byte数组 /// 密文的byte数阅读详情

密钥：0123456789ABCDEF0123456789ABCDEF
密文：DC8E659612F5E0AD
明文：48B85E63C34EE31F
如上：密文经密钥解密后得到明文

找了几段代码，总是得不出这样的结果啊
哪位大侠以前用过，帮忙看看，给段加解密代码，能够得出这样的结果的。

实在不行，C代码也行，用C先编个动态库也用着，急啊

多谢多谢

...全文

用CryptoJS 实现js端3des加密和解密，用openssl_encrypt实现php的3des加密解密，兼容java和C#和c++等因为要开发社交平台，涉及到聊天内容，这些敏感内容想用3des加密传输，百度了好多资料，测试了好多次，终于实现了功能，可以直接使用，这里写下来，希望帮助到其他朋友。听说微信小程序需要数据加密，相信这个能帮到大家。这里说一下，iv向量一般是8位，我的php版本是5.5.12 我原来用mcrypt_decrypt的时候，有的iv长度要8位，有的要16位... 阅读详情

海盗色色

C# 111,129 成员 642,538 内容

+ 关注 + 加入社区

切换为时间正序

wangboforce 2013-10-16

打赏
举报

引用 16 楼 hubro 的回复:

为什么我调用代码结果密文为32位啊

Sharpend 2013-07-11

打赏
举报

引用 8 楼 Sharpend 的回复:

DES的加密和解密

看错了...3d的我没研究过...

Sharpend 2013-07-11

打赏
举报

DES的加密和解密

海盗色色 2013-07-11

打赏
举报

是我发的地方不对吗怎么没人来

风中飘过一行代码 2013-07-11

打赏
举报

没有做过，不过在网上给你找了个方法，你可以后试试 http://www.oschina.net/code/snippet_153287_4820

海盗色色 2013-07-11

打赏
举报

我来顶一下呼唤下高手

海盗色色 2013-07-11

打赏
举报

楼上我要的3DES加密我的明文密文密钥都有了您试过了吗？

hp5578 2013-07-11

打赏
举报

郑州,你请么

海盗色色 2013-07-11

打赏
举报

哥啊非常感谢您在哪里我要请你吃饭

hp5578 2013-07-11

打赏
举报

海盗色色 2013-07-11

打赏
举报

你那里通过这种算法密文解密后能得出我说的这种明文吗

海盗色色 2013-07-11

打赏
举报

给你留言了能不能给个联系方式我忙上去测试不行的话还得请教您

hp5578 2013-07-11

打赏
举报

就是下面的ECB

海盗色色 2013-07-11

打赏
举报

楼上呼叫你二倍长的代码里MAC是你封装的动态库吧

hp5578 2013-07-11

打赏
举报

谁把我回的贴子删了,蛋疼 3DES分二倍长和三倍长,微软封装的是三倍长,二倍长得自已写 ECB和CBC结果是一样的



/// <summary>
        /// 3des二倍长加密
        /// </summary>
        /// <param name="key"></param>
        /// <param name="iv"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        public static byte[] _3DES2Encrypt(byte[] key, byte[] iv, byte[] data)
        {
            byte[] key1 = new byte[8];
            Array.Copy(key, 0, key1, 0, 8);
            byte[] key2 = new byte[8];
            Array.Copy(key, 8, key2, 0, 8);
            byte[] data1 = MAC.EncryptECB(data,key1,iv);
            data1 = MAC.DecryptECB(data1,key2,iv);
            data1 = MAC.EncryptECB(data1, key1, iv);
            return data1;
        }
        /// <summary>
        /// 3des二倍长解密
        /// </summary>
        /// <param name="key"></param>
        /// <param name="iv"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        public static byte[] _3DES2Descrypt(byte[] key, byte[] iv, byte[] data)
        {

            byte[] key1 = new byte[8];
            Array.Copy(key, 0, key1, 0, 8);
            byte[] key2 = new byte[8];
            Array.Copy(key, 8, key2, 0, 8);

            byte[] data1 = MAC.DecryptECB(data, key1, iv);
            data1 = MAC.EncryptECB(data1, key2, iv);
            data1 = MAC.DecryptECB(data1, key1, iv);
            return data1;
        }

ECB加解密


 /// <summary>
        /// ECB解密
        /// </summary>
        /// <param name="encryptedDataBytes"></param>
        /// <param name="keys"></param>
        /// <returns></returns>
        public static byte[] DecryptECB(byte[] encryptedDataBytes, byte[] keys, Byte[] iv)
        {
            //Byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
            //Byte[] keys = System.Text.Encoding.UTF8.GetBytes(key.Substring(0, key.Length));

            //Byte[] encryptedDataBytes = System.Convert.FromBase64String(sourceData);
            MemoryStream tempStream = new MemoryStream(encryptedDataBytes, 0, encryptedDataBytes.Length);
            DESCryptoServiceProvider decryptor = new DESCryptoServiceProvider();
            decryptor.Mode = CipherMode.ECB;
            decryptor.Padding = PaddingMode.None;
            CryptoStream decryptionStream = new CryptoStream(tempStream, decryptor.CreateDecryptor(keys, iv), CryptoStreamMode.Read);
            //StreamReader allDataReader = new StreamReader(decryptionStream);
            byte[] data = new byte[encryptedDataBytes.Length];
            decryptionStream.Read(data, 0, data.Length);
            decryptionStream.Close();
            tempStream.Close();
            return data;

        }
 /// <summary>
        /// ECB加密
        /// </summary>
        /// <param name="sourceDataBytes"></param>
        /// <param name="keys"></param>
        /// <returns></returns>
        public static byte[] EncryptECB(byte[] sourceDataBytes, byte[] keys, Byte[] iv)
        {

            //Byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
            MemoryStream tempStream = new MemoryStream();
            //get encryptor and encryption stream
            DESCryptoServiceProvider encryptor = new DESCryptoServiceProvider();
            encryptor.Mode = CipherMode.ECB;
            encryptor.Padding = PaddingMode.None;
            CryptoStream encryptionStream = new CryptoStream(tempStream, encryptor.CreateEncryptor(keys, iv), CryptoStreamMode.Write);
            encryptionStream.Write(sourceDataBytes, 0, sourceDataBytes.Length);
            encryptionStream.FlushFinalBlock();
            encryptionStream.Close();
            byte[] encryptedDataBytes = tempStream.ToArray();
            tempStream.Close();
            return encryptedDataBytes;
        }

BBHor 2013-07-11

打赏
举报

楼主可以给我发私信，咱们交流一下，我已经加关注了；我跟你一样也在弄3DES 二倍长 CBC模式的加密...

laisui 2013-07-10

打赏
举报


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

namespace MyDes
{
    /// <summary>
    /// 字符串加解密
    /// </summary>
    public static class DES
    {
        //默认密钥向量
        private static byte[] IV = { 0x67, 0x51, 0x40, 0x2F, 0xDE, 0x0F, 0x3E,0x1A};
        private static string key = "@yourkey";
        /// <summary>
        /// DES加密字符串
        /// </summary>
        /// <returns>加密成功返回加密后的字符串，失败返回源串</returns>
        public static string Encrypt(string toEncryptString)
        {
            try
            {
                if (toEncryptString == null || toEncryptString == "" || toEncryptString == string.Empty)
                {
                    return "";
                }
                byte[] rgbKey = Encoding.UTF8.GetBytes(key.Substring(0, 8));//
                byte[] rgbIV = IV;
                byte[] inputByteArray = Encoding.UTF8.GetBytes(toEncryptString);
                DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Convert.ToBase64String(mStream.ToArray());
            }
            catch
            {
                return toEncryptString;
            }
        }

        /// <summary>
        /// DES解密字符串
        /// </summary>
        /// <param name="toDecryptString">待解密的字符串</param>
        /// <returns>解密成功返回解密后的字符串，失败返源串</returns>
        public static string Decrypt(string toDecryptString)
        {
            try
            {
                if (toDecryptString == null || toDecryptString == "" || toDecryptString == string.Empty)
                {
                    return "";
                }
                byte[] rgbKey = Encoding.UTF8.GetBytes(key);
                byte[] rgbIV = IV;
                byte[] inputByteArray = Convert.FromBase64String(toDecryptString);
                DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
                MemoryStream mStream = new MemoryStream();
                CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
                cStream.Write(inputByteArray, 0, inputByteArray.Length);
                cStream.FlushFinalBlock();
                return Encoding.UTF8.GetString(mStream.ToArray(), 0, mStream.ToArray().Length);
            }
            catch
            {
                return toDecryptString;
            }
        }

        /// <summary>
        /// DES加密方法
        /// </summary>
        /// <param name="toEncryptString">明文</param>
        /// <param name="Key">密钥</param>
        /// <param name="IV">向量</param>
        /// <returns>密文</returns>
        public static string Encrypt(string toEncryptString, string Key, string IV)
        {
            //把密钥转换成字节数组
            byte[] bytesDESKey = ASCIIEncoding.ASCII.GetBytes(Key);
            //把向量转换成字节数组
            byte[] bytesDESIV = ASCIIEncoding.ASCII.GetBytes(IV);
            //声明1个新的DES对象
            DESCryptoServiceProvider desEncrypt = new DESCryptoServiceProvider();
            //开辟一块内存流
            MemoryStream msEncrypt = new MemoryStream();
            //把内存流对象包装成加密流对象
            CryptoStream csEncrypt = new CryptoStream(msEncrypt, desEncrypt.CreateEncryptor(bytesDESKey, bytesDESIV), CryptoStreamMode.Write);
            //把加密流对象包装成写入流对象
            StreamWriter swEncrypt = new StreamWriter(csEncrypt);
            //写入流对象写入明文
            swEncrypt.WriteLine(toEncryptString);
            //写入流关闭
            swEncrypt.Close();
            //加密流关闭
            csEncrypt.Close();
            //把内存流转换成字节数组，内存流现在已经是密文了
            byte[] bytesCipher = msEncrypt.ToArray();
            //内存流关闭
            msEncrypt.Close();
            //把密文字节数组转换为字符串，并返回
            return Encoding.UTF8.GetString(bytesCipher, 0, bytesCipher.Length);
        }


        /// <summary>
        /// DES解密方法
        /// </summary>
        /// <param name="toDecryptString">密文</param>
        /// <param name="Key">密钥</param>
        /// <param name="IV">向量</param>
        /// <returns>明文</returns>
        public static string Decrypt(string toDecryptString, string Key, string IV)
        {
            //把密钥转换成字节数组
            byte[] bytesDESKey = ASCIIEncoding.ASCII.GetBytes(Key);
            //把向量转换成字节数组
            byte[] bytesDESIV = ASCIIEncoding.ASCII.GetBytes(IV);
            //把密文转换成字节数组
            byte[] bytesCipher = UnicodeEncoding.Unicode.GetBytes(toDecryptString);
            //声明1个新的DES对象
            DESCryptoServiceProvider desDecrypt = new DESCryptoServiceProvider();
            //开辟一块内存流，并存放密文字节数组
            MemoryStream msDecrypt = new MemoryStream(bytesCipher);
            //把内存流对象包装成解密流对象
            CryptoStream csDecrypt = new CryptoStream(msDecrypt, desDecrypt.CreateDecryptor(bytesDESKey, bytesDESIV), CryptoStreamMode.Read);
            //把解密流对象包装成读出流对象
            StreamReader srDecrypt = new StreamReader(csDecrypt);
            //明文=读出流的读出内容
            string strPlainText = srDecrypt.ReadLine();
            //读出流关闭
            srDecrypt.Close();
            //解密流关闭
            csDecrypt.Close();
            //内存流关闭
            msDecrypt.Close();
            //返回明文
            return strPlainText;
        }

    }
}

海盗色色 2013-07-10

打赏
举报

已经试过了不是弱密钥错误就是要解密的数据的长度无效等等不熟悉不知道改哪里

yunlovejia 2013-07-10

打赏
举报

System.Security.Cryptography 在这个空间里有加密解密的东西吧。找找看。我现在没有VS，没法写代码。

C# 3DES加密解密

相关推荐