C#破解access数据库密码方法

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Demo
{
class Program
{
[STAThread]
static void Main(string[] args)
{
OpenFileDialog f = new OpenFileDialog();
if (f.ShowDialog() != DialogResult.OK) return;
MessageBox.Show("密码:[" + GetPassword(f.FileName) + "]", "密码");
}

// 获取密码
static string GetPassword(string file)
{                       // 未加密的文件0x42开始至0x61之前的每间隔一字节的数值
byte[] baseByte = { 0xbe, 0xec, 0x65, 0x9c, 0xfe, 0x28, 0x2b, 0x8a, 0x6c, 0x7b, 0xcd, 0xdf, 0x4f, 0x13, 0xf7, 0xb1, };
byte flagByte = 0x0c; // 标志 0x62 处的数值
string password = "";
try
{
FileStream fs = File.OpenRead(file);
fs.Seek(0x14, SeekOrigin.Begin);
byte ver = (byte)fs.ReadByte();     // 取得版本, 1为Access2000, 0为Access97
fs.Seek(0x42, SeekOrigin.Begin);
byte[] bs = new byte[33];
if (fs.Read(bs, 0, 33) != 33) return "";
byte flag = (byte)(bs[32] ^ flagByte);
for (int i = 0; i < 16; i++)
{
byte b = (byte)(baseByte[i] ^ (bs[i * 2]));
if (i % 2 == 0 && ver == 1) b ^= flag;  //Access 2000
if (b > 0)
{
var ch = (char) b;
password +=ch;
}
}
}
catch { }
return password;
}
}
}