I am trying to implement Hardware locked Licensing.I found the following code from codeproject that generates hardware id(Machine ID)
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This code generates Hardware Key
.My aim is to implement strict licensing scheme.As shown in the diagram given below,I am able to generate a unique machine or Hardware ID using the above code.
Based on the Machine ID or Key,I wish to generate an Activation Key so that it would be unique and can be used only on one machine because the Activation key would be generated from that Machines MachineIDHow can that be achieved?
Following is the image
I hope my doubt is clear.If not please let me know,I'll update the question with more information
1 Answer
The simple solution
The simple solution would be something like this. When the user buys your software, generate a unique GUID for the license. Let's call this the license key. When the user installs the software, you take your unique hardware key, concatenate that with the license key, and hash the result. The hash you generate will be the activation code that you're looking for. Store that value on your server. If the same license key is ever used to install the software on another machine, you will compare the computed activation code for that installation against the one you have stored on your server and deny the installation if the codes do not match.
The Catch
That being said... the way your current scheme is set up, you are going to risk making your customers very upset. For example, if I buy your software and my hard drive dies on me, with your current setup I would have no way to recover my software. If you're going to do hardware signature based licensing, you should try to restrict it to the features that are least likely to change. BIOS...ok maybe you're safe. But hard drive, network card, video card are much more likely to change.
Also, you might want to give your customers a way to transfer the license to another computer. The way your do this is have a custom action in your uninstaller that will revoke the activation code for the license so it will no longer be tied to that hardware ID.
Conclusion
In all of this, the key is to keep things as simple as possible for your customer. There obviously is a trade-off between security and ease of use, but you DO NOT want to lock out legitimate customers and risk alienating them.
All that being said, there are also plenty of existing commercials options for managing licenses. QLM is pretty good is you're willing to shell out the money. In everything, just consider the cost of securing your software versus the value of securing it.
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Short Bytes: Losing/forgetting your WinRAR password could be a headache for all the computer and smartphone users. At times, we protect the important documents/files using a strong password and forget they unlocking key. So, here, I’m going to tell you this a simple method of how to crack WinRAR password protected files and get back your important data. Do follow the steps mentioned below and let us know if you faced any difficulty.
WinRAR is a great utility to compress your files and protect it using a password. You can keep your data safe and save storage space by keeping it compressed in .RAR format. When it comes to RAR and ZIP, RAR has tons of advantages. It can store file system attributes of NTFS, making it a great backup tool choice. Its compression ratio is also better.Another advantage of using a RAR file format is that one can spit it into parts and store it into smaller storage media.
However, what to do if you forget the password of your WinRAR password protected file? How to crack RAR password and get back your data.
To crack WinRAR password protected file, you need to recover the file password and use it to unlock the file. There are some methods to crack WinRAR password using the command prompt, but they just work on integers and other combinations of characters.
So, all you need is a 100% working method that recovers the file key. In this detailed tutorial, we’ll be using a simple password recovery tool to recover your lost/forgotten WinRAR file passwords.
You need to use the .RAR Password Genius to crack WinRAR password and .ZIP Password Genius to crack the WinZIP Password.
In the steps described ahead, I’ll describe how to crack WinRAR password. WinRAR Password Genius is a tiny but powerful password recovery tool that is famous for high speed and guessing the complex password algorithms. It supports all the software that create the .RAR archives. By using the similar tool for WinZIP and similar steps, you can recover the password from the .ZIP protected files as well.
Let’s get started:
How To Crack RAR Password With WinRAR Unlocker?
Download A WinRAR Password Cracking Tool
To crack the WinRAR passwords, you need to download the WinRAR Password Genius from this link and install it on your PC by following the installation wizard. This software is the solution to all your worries and it works in three steps to complete the WinRAR password recovery. Its interface is very simple and all the options are right in front of you.
The software might not boast of a great and modern look but it gets the job done. Using it on my Windows 10 PC, it reminds me of my Windows 7 days.
Fire-up the software and import RAR file
To start WinRAR recovery process, you need to fire up the software and import the .RAR file into the WinRAR Password Genius. You can do this by hitting the Open button at the top and look for the .RAR file on your computer to bring it in the Encrypted File box.
Select type of attack for cracking
The software uses multiple attack techniques to crack the WinRAR password. Different kinds of attacks are Brute-force, Mask, Dictionary and Smart. These are used to guess different types of passwords and you need to use these methods accordingly. For example, Brute-Force is a common method of cracking that checks all possible combinations and shows you the results when a password is found that actually opens the file.
Read more about these here to select the type and settings.
Start the cracking process
Now after choosing the Type of attack from the drop-down list, select the attack type and crack WinRAR password by pressing the Start button.
Wait for the process to complete
After this, the software will start its process and recover the WinRAR password for you. As the software cracks the file, a pop-up will appear showing you the password.
Use the recovered password to unlock file
Now, open the password protected .RAR file in WinRAR and you’ll see a dialog that asks for the password. Now, enter the recovered password and hit enter. This will bypass the password and now you can access your files and extract them.
To crack the WinZIP password protected files, you need to use the WinZIP Password Genius and follow all the similar steps mentioned above.
Did you find this how crack WinRAR password protected file tutorial helpful? Tell us in the comments below.