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