Generating Unique Key (Finger Print) for a Computer for Licensing Purposes

来源：互联网发布：新手如何快速入门seo 编辑：程序博客网时间：2024/06/03 02:35
原文链接：http://www.codeproject.com/Articles/28678/Generating-Unique-Key-Finger-Print-for-a-Computer
using System;using System.Management;using System.Security.Cryptography;using System.Security;using System.Collections;using System.Text;namespace Security{    /// <summary>    /// Generates a 16 byte Unique Identification code of a computer    /// Example: 4876-8DB5-EE85-69D3-FE52-8CF7-395D-2EA9    /// </summary>    public class FingerPrint    {        private static string fingerPrint = string.Empty;        public static string Value()        {            if (string.IsNullOrEmpty(fingerPrint))            {                fingerPrint = GetHash("CPU >> "                    + cpuId()                    + "\nBIOS >> "                    + biosId()                     + "\nBASE >> "                    + baseId()                    + "\nDISK >> "                    + diskId()                    + "\nVIDEO >> "                    + videoId()                    + "\nMAC >> "                    + macId());            }            return fingerPrint;        }        private static string GetHash(string s)        {            MD5 sec = new MD5CryptoServiceProvider();            ASCIIEncoding enc = new ASCIIEncoding();            byte[] bt = enc.GetBytes(s);            return GetHexString(sec.ComputeHash(bt));        }        private static string GetHexString(byte[] bt)        {            string s = string.Empty;            for (int i = 0; i < bt.Length; i++)            {                byte b = bt[i];                int n, n1, n2;                n = (int)b;                n1 = n & 15;                n2 = (n >> 4) & 15;                if (n2 > 9)                    s += ((char)(n2 - 10 + (int)'A')).ToString();                else                    s += n2.ToString();                if (n1 > 9)                    s += ((char)(n1 - 10 + (int)'A')).ToString();                else                    s += n1.ToString();                if ((i + 1) != bt.Length && (i + 1) % 2 == 0) s += "-";            }            return s;        }        #region Original Device ID Getting Code        //Return a hardware identifier        private static string identifier(string wmiClass, string wmiProperty, string wmiMustBeTrue)        {            string result = null;            System.Management.ManagementClass mc = new System.Management.ManagementClass(wmiClass);            System.Management.ManagementObjectCollection moc = mc.GetInstances();            foreach (System.Management.ManagementObject mo in moc)            {                if (mo[wmiMustBeTrue].ToString() == "True")                {                    try                    {                        result = mo[wmiProperty].ToString();                        break;                    }                    catch { }                }            }            return result ?? string.Empty;        }        //Return a hardware identifier        private static string identifier(string wmiClass, string wmiProperty)        {            string result = null;            System.Management.ManagementClass mc = new System.Management.ManagementClass(wmiClass);            System.Management.ManagementObjectCollection moc = mc.GetInstances();            foreach (System.Management.ManagementObject mo in moc)            {                try                {                    result = mo[wmiProperty].ToString();                    break;                }                catch { }            }            return result ?? string.Empty;        }        private static string cpuId()        {            //Uses first CPU identifier available in order of preference            //Don't get all identifiers, as it is very time consuming            string retVal = identifier("Win32_Processor", "UniqueId");            if (retVal.Length == 0) //If no UniqueID, use ProcessorID            {                retVal = identifier("Win32_Processor", "ProcessorId");                if (retVal.Length == 0) //If no ProcessorId, use Name                {                    retVal = identifier("Win32_Processor", "Name");                    if (retVal.Length == 0) //If no Name, use Manufacturer                    {                        retVal = identifier("Win32_Processor", "Manufacturer");                    }                    //Add clock speed for extra security                    retVal += identifier("Win32_Processor", "MaxClockSpeed");                }            }            return retVal;        }        //BIOS Identifier        private static string biosId()        {            return string.Concat(identifier("Win32_BIOS", "Manufacturer")            , identifier("Win32_BIOS", "SMBIOSBIOSVersion")            , identifier("Win32_BIOS", "IdentificationCode")            , identifier("Win32_BIOS", "SerialNumber")            , identifier("Win32_BIOS", "ReleaseDate")            , identifier("Win32_BIOS", "Version"));        }        //Main physical hard drive ID        private static string diskId()        {            return string.Concat(identifier("Win32_DiskDrive", "Model")            , identifier("Win32_DiskDrive", "Manufacturer")            , identifier("Win32_DiskDrive", "Signature")            , identifier("Win32_DiskDrive", "TotalHeads"));        }        //Motherboard ID        private static string baseId()        {            return string.Concat(identifier("Win32_BaseBoard", "Model")            , identifier("Win32_BaseBoard", "Manufacturer")            , identifier("Win32_BaseBoard", "Name")            , identifier("Win32_BaseBoard", "SerialNumber"));        }        //Primary video controller ID        private static string videoId()        {            return string.Concat(identifier("Win32_VideoController", "DriverVersion")            , identifier("Win32_VideoController", "Name"));        }        //First enabled network card ID        private static string macId()        {            return identifier("Win32_NetworkAdapterConfiguration",                "MACAddress", "IPEnabled");        }        #endregion    }}