Problem
1) The main concept of this project is to develop a protection system to avoid software privacy & also enhance the protection of software. In industries, software piracy is a major threat because hackers using different malicious and malware codes to get access to software products. Thus, it is crucial to use the required protection system to maintain data protection and software products' copyright rights. At first, the users must register their software products and then buy the software online.
2) When the online payment is done, software product users can easily download the software along with the serial key. This software reads the desktop ID so that it generates a user ID through an algorithm. So the user can access by using the ID and serial key. Once the key is entered, then the software will produce a key through encryption to compare it with the user's serial key for verification. If the generated key matches with the user key, it gives access to the software product otherwise it will be locked.
a) Draw a sequence diagram for authenticating the user given key into the system.
b) Map the potential vulnerability locations in the sequence diagram.