Create Serial Number

[Guest]

I have a windows app using vb.net 2005.

I would like to create a serial number based on a couple of characteristics
of the customers computer (computer name, HD number..etc). I don't need
anything complicated just a way to generate a 16 character number.

Is there an easy way to do this...?

Thanks

 

[Cor Ligthert [MVP]]

Arne,

I don't see what is the problem with that. If it is based on existing
numbers than it is concatenating.

Can you explain to us what is the diffficult with this.

Be aware that it will never be a Global Unique ID. Therefore you need the
GUID and more positions.

http://msdn2.microsoft.com/en-us/library/system.guid.aspx

Cor

 

[Paul Bromley]

In my applicattion, I used an encrpted string based on a number of features
of the user machine and my program. I created an encryption program to
create the encrypted string, and within the user program is the same
encryption function to check that the two strings are equal. The function I
used is below:-

Imports System.Text
Imports System.Security.Cryptography
Module modEncrypt
Public Function HashData(ByVal s As String) As String
'Convert the string to a byte array
Dim bytDataToHash As Byte() = _
(New UnicodeEncoding()).GetBytes(s)
'Compute the MD5 hash algorithm
Dim bytHashValue As Byte() = _
New MD5CryptoServiceProvider().ComputeHash(bytDataToHash)
Return BitConverter.ToString(bytHashValue)
End Function
End Module

Best wishes

Paul Bromley

 

[Bildoss]

'bytDataToHash' denotes a 'variable' where a 'method' was expected

What error is this? how to correct the code



EggHeadCafe.com - .NET Developer Portal of Choice
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[Bildoss]

'bytDataToHash' denotes a 'variable' where a 'method' was expected

What error is this? how to correct the code in C#




EggHeadCafe.com - .NET Developer Portal of Choice
http://www.eggheadcafe.com

 

[Herfried K. Wagner [MVP]]

'bytDataToHash' denotes a 'variable' where a 'method' was expected

What error is this? how to correct the code in C#

You can correct it by posting your question to a C# newsgroup.

 

[Rad [Visual C# MVP]]

'bytDataToHash' denotes a 'variable' where a 'method' was expected

What error is this? how to correct the code

EggHeadCafe.com - .NET Developer Portal of Choice
http://www.eggheadcafe.com

Probably the compiler is expecting bytDataToHash()

 

[Serial]

Easy Solution

I wrote a .NET library last week to handle this for you very quickly. It generates unique product codes for your application and validate them. You can get it extremely cheaply here: http://simpleserials.com

 

[LogicNP]

You can create a byte based hardware profile of the machine and take a hash of the bytes to get the "machine code". Then check that this hash is the same as the one generated everytime your app is run. If you want to use a ready scheme, take a look at CryptoLicensing.