Solved

Generate Serial Number for my Program

Posted on 2012-04-05
2
533 Views
Last Modified: 2012-04-05
I am trying to figure out the best way for users to "register" the program I am writing.

Here are my simple guidelines:

1. The program should be able to be registered without an internet connection.

2. The registration dialog box consists of a USERNAME and SERIAL NUMBER edit control.


I would like some high level suggestions on how to make sure the serial number is unique to each user BASED upon their USERNAME.

Of course we have some CONSTANTS I have available to me, for each user, which could be used to generate the final serial number.

a. hard drive serial
b. time info ( day, month, etc )
c. other WIN32 api return values that are consistent....

So, I would like some ideas on a simple algorithm based on the username.

All sincere suggestions will receive points.

I would LOVE a solution (suggestion) that I could actually put into production - not necessarily code, but a detailed suggestion - KEEP IN MIND PLEASE, I am only an intermediate C++ programmer, lol.

THANKS!!
0
Comment
Question by:edvinson
2 Comments
 
LVL 86

Accepted Solution

by:
jkr earned 500 total points
ID: 37814868
If you are after a unique serial number based on the user's machine, try a GUID:

#include <objbase.h>
#include <stdio.h>

#pragma comment(lib,"ole32.lib")

void GenerateGUID(char* pBuf) {

  GUID guid;
  ::CoInitialize(0);
  ::CoCreateGuid(&guid);

  sprintf(pBuf,"{%08lX-%04X-%04x-%02X%02X-%02X%02X%02X%02X%02X%02X}",
        guid.Data1, guid.Data2, guid.Data3,
        guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
        guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);

  CoUninitialize();
}

Open in new window

0
 
LVL 1

Author Closing Comment

by:edvinson
ID: 37814928
Great solution, JKR. This solution never occurred to me.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Quicksort a dynamic deque 33 66
PDF library for Delphi 2 107
Header of docx file 17 98
VS2015 Redefinition errors 4 29
Introduction This article is the first in a series of articles about the C/C++ Visual Studio Express debugger.  It provides a quick start guide in using the debugger. Part 2 focuses on additional topics in breakpoints.  Lastly, Part 3 focuses on th…
Container Orchestration platforms empower organizations to scale their apps at an exceptional rate. This is the reason numerous innovation-driven companies are moving apps to an appropriated datacenter wide platform that empowers them to scale at a …
The goal of this video is to provide viewers with basic examples to understand how to use strings and some functions related to them in the C programming language.
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

895 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now