Generate the manufacturer’s HWID BIOS (GUID from SHA-1) just like Microsoft does

Question

Generate the manufacturer’s HWID BIOS (GUID from SHA-1) just like Microsoft does

SCENARIO

I would like to learn, in C # or VB.NET , how to create a hardware identifier. based on the same methodology that Microsoft developers do for this.

First of all, before continuing, I have to advertise this question, this is a more specific other question arising from this other question: Get hardware identifiers such as Microsoft .

And the main problems for creating Microsoft HWID, based on the SMBIOS table , are described in the answers to this question, related above, and more deeply here: Specifying computer hardware identifiers

And my reason for trying to reproduce their methodology is simply to follow professional standard guidelines on how to do the right thing: Microsoft's way.

PROBLEM

Since getting the SMBIOS table from managed .NET seems an impossible / unrealized task, I also cannot find any demo using the Win32 function: GetSystemFirmwareTable , and somehow parsing the SMBIOS table seems like a real nightmare that works too much for one one developer .... because I suspect that the working analyzer algorithm will need to be constantly updated / updated: SMBIOS version history

... , WMI (SMBIOS), WMI null, WMI) , Microsoft HWID.

, Microsoft, HWID, : SMBIOS.

, - , , ...

, , :

SHA-1 GUID, SHA-1, ComputerHardwareIds.exe, WDK/ SDK: ComputerHardwareIds

( HWID URL-, SCENARIO), )

SHA-1 - 40 char. . System.GUID , Byte-Array SHA-1.
@ :

UUID 5 (SHA-1) 70ffd812-4c7f-4c7d-0000-000000000000

... , , cypher?. , SHA-1. SHA1CryptoServiceProvider , ... .

, , :

#:

string manufacturer = "American Megatrends Inc.";
byte[] charBuff = Encoding.Unicode.GetBytes(manufacturer); // UTF-16
byte[] hashBuff = null;
string hashStr = null;

using (SHA1CryptoServiceProvider cypher = new SHA1CryptoServiceProvider()) {
    hashBuff = cypher.ComputeHash(charBuff);
    hashStr = BitConverter.ToString(hashBuff).Replace("-", ""); // Same string conversion methodology employed in a MSDN article.
}
Debug.WriteLine("SHA-1=\"{0}\"", hashStr); // SHA-1="0E74E534EE9F1985AE173C640302F58121190593" 

Guid guid = new Guid(hashBuff); // System.ArgumentException: 'Byte array for GUID must be exactly 16 bytes long.'

VB.NET:

Dim manufacturer As String = "American Megatrends Inc."
Dim charBuff As Byte() = Encoding.Unicode.GetBytes(manufacturer) ' UTF-16
Dim hashBuff As Byte()
Dim hashStr As String

Using cypher As New SHA1CryptoServiceProvider
    hashBuff = cypher.ComputeHash(charBuff)
    hashStr = BitConverter.ToString(hashBuff).Replace("-", "") ' Same string conversion methodology employed in a MSDN article.
End Using
Debug.WriteLine("SHA-1=""{0}""", hashStr) ' SHA-1="0E74E534EE9F1985AE173C640302F58121190593"

Dim guid As New Guid(hashBuff) ' System.ArgumentException: 'Byte array for GUID must be exactly 16 bytes long.'

GUID GUID, ComputerHardwareIds.exe :