Crack is a program that reveals Unix passwords, and it is made explicitly for system administrators to have the capability to locate users whose passwords are too weak to attack by hackers using a dictionary hacking system. It is a direct outcome of the program’s creator wanting to improve upon the one before it. Keygen, on the other hand, is the abbreviated form of the phrase key generator.
It is a small program that cultivates valid CD keys or serial numbers for software. These serial numbers are made accessible to administrators through software cracking groups for free download on several websites that are dedicated to software privacy. It is considered to be illegal in countries to activate the software without purchasing the genuine code.
Crack was first released as version 2.7 and was posted to Usenet newsgroups. There have been a plethora of new upgrades, which includes a programmable dictionary generator, a network distributed password tracking systems, and improved code with more flexibility.