C# Base64加密解密算法实现

最新推荐文章于 2024-03-12 14:21:04 发布

yinyaling

最新推荐文章于 2024-03-12 14:21:04 发布

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分类专栏： C# 文章标签：解密加密算法 c# byte string

本文链接：https://blog.youkuaiyun.com/yinyaling/article/details/6610685

这是一个C#实现的Base64加密解密算法，包括Base64Code方法用于加密和Base64Decode方法用于解密。代码中使用了System.Text.StringBuilder和ArrayList来处理字符串和字节，确保正确转换并处理不完整的数据块。

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Data;
namespace HGCM.Util
{
    public class Base64
    {
        public static string Base64Code(string Message)
        {
            char[] Base64Code = new char[]{'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T',
         'U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n',
         'o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7',
         '8','9','+','/','='};
            byte empty = (byte)0;
            System.Collections.ArrayList byteMessage = new System.Collections.ArrayList(System.Text.Encoding.Default.GetBytes(Message));
            System.Text.StringBuilder outmessage;
            int messageLen = byteMessage.Count;
            int page = messageLen / 3;
            int use = 0;
            if ((use = messageLen % 3) > 0)