.NET 实现Base-64加密解密处理

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        { 
            string a1 = EncodeBase64("Base-64加密解密测试");
            Console.WriteLine(a1);
            string a2 = DecodeBase64(a1);
            Console.WriteLine(a2); 
            Console.Read();  
        }
        /// <summary>
        /// Base64加密
        /// </summary>
        /// <param name="codeName">加密采用的编码方式</param>
        /// <param name="source">待加密的明文</param>
        /// <returns></returns>
        public static string EncodeBase64(Encoding encode, string source)
        {
            string enString = "";
            byte[] bytes = encode.GetBytes(source);
            try
            {
                enString = Convert.ToBase64String(bytes);
            }
            catch
            {
                enString = source;
            }
            return enString;
        }

        /// <summary>
        /// Base64加密，采用utf8编码方式加密
        /// </summary>
        /// <param name="source">待加密的明文</param>
        /// <returns>加密后的字符串</returns>
        public static string EncodeBase64(string source)
        {
            return EncodeBase64(Encoding.UTF8, source);
        }
        /// <summary> 
        /// Base64解密 
        /// </summary> 
        /// <param name="codeName">解密采用的编码方式，注意和加密时采用的方式一致</param> 
        /// <param name="result">待解密的密文</param> 
        /// <returns>解密后的字符串</returns> 
        public static string DecodeBase64(Encoding encode, string result)
        {
            string decode = "";
            byte[] bytes = Convert.FromBase64String(result);
            try
            {
                decode = encode.GetString(bytes);
            }
            catch
            {
                decode = result;
            }
            return decode;
        }

        /// <summary> 
        /// Base64解密，采用utf8编码方式解密 
        /// </summary> 
        /// <param name="result">待解密的密文</param> 
        /// <returns>解密后的字符串</returns> 
        public static string DecodeBase64(string result)
        {
            return DecodeBase64(Encoding.UTF8, result);
        } 
    }  
}