C#加密算法（加解密base64/des/md5）

C#加密算法示例代码(加解密base64/des/md5)

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Security.Cryptography;
using System.Text;
using System.Management;
namespace EncryptHelper
{
    public sealed class EncryptUtils
    {
        #region base64加密解密
        /// 

        /// base64加密
        /// 

        /// 需要加密的字符串
        /// 
        public static string base64Encrypt（string input）
        {
            return base64Encrypt（input new UTF8Encoding（））;
        }

        /// 

        /// base64加密
        /// 

        /// 需要加密的字符串
        /// 字符编码
        /// 
        public static string 

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

    .CA....   1425408  2015-12-15 10:32  EncryptHelper\bin\Debug\BouncyCastle.Crypto.dll

    .CA....     10240  2015-12-15 11:44  EncryptHelper\bin\Debug\EncryptHelper.dll

    .CA....     24064  2015-12-15 11:44  EncryptHelper\bin\Debug\EncryptHelper.pdb

    .CA....      2650  2015-12-15 10:32  EncryptHelper\EncryptHelper.csproj

    .CA....     17080  2015-12-15 11:44  EncryptHelper\EncryptUtils.cs

    .CA....      6105  2015-12-15 10:32  EncryptHelper\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

    .CA....       639  2015-12-15 10:53  EncryptHelper\obj\Debug\EncryptHelper.csproj.FileListAbsolute.txt

    .CA....      5852  2015-12-15 10:32  EncryptHelper\obj\Debug\EncryptHelper.csprojResolveAssemblyReference.cache

    .CA....     10240  2015-12-15 11:44  EncryptHelper\obj\Debug\EncryptHelper.dll

    .CA....     24064  2015-12-15 11:44  EncryptHelper\obj\Debug\EncryptHelper.pdb

    .CA....       138  2015-12-15 10:32  EncryptHelper\packages.config

    .CA....      1334  2015-12-14 15:35  EncryptHelper\Properties\AssemblyInfo.cs

    .C.D...         0  2015-12-14 15:35  EncryptHelper\obj\Debug\TempPE

    .C.D...         0  2015-12-15 10:32  EncryptHelper\bin\Debug

    .C.D...         0  2015-12-14 15:35  EncryptHelper\bin\Release

    .C.D...         0  2015-12-15 10:32  EncryptHelper\obj\Debug

    .C.D...         0  2015-12-14 15:35  EncryptHelper\bin

    .C.D...         0  2015-12-14 15:35  EncryptHelper\obj

    .C.D...         0  2015-12-14 15:35  EncryptHelper\Properties

    .C.D...         0  2015-12-15 11:44  EncryptHelper

----------- ---------  ---------- -----  ----

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