Question

What is the disadvantage of user-input-based decryption keys?

a.

They are difficult to compute

b.

They are easy to keep secret

c.

They require a valid serial number

d.

They become less secure once the key computation algorithm is known

Posted under Reverse Engineering

Answer: (d).They become less secure once the key computation algorithm is known Explanation:User-input-based decryption keys become less secure once the algorithm for computing the key is known, as it would only take a single valid serial number to find out the key that was used for encrypting the important code chunks.

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