Question

How do pirates typically crack the challenge response protection scheme?

a.

By creating a keygen program that emulates the server’s challenge mechanism and generates a valid response on demand

b.

By duplicating the distribution floppies that have special "bad" sectors

c.

By sharing valid serial numbers online

d.

By bypassing the installation program and running the executable directly

Posted under Reverse Engineering

Answer: (a).By creating a keygen program that emulates the server’s challenge mechanism and generates a valid response on demand Explanation:The common cracking approach for the challenge response protection scheme is to create a keygen program that emulates the server’s challenge mechanism and generates a valid response on demand.

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