Question

Why does Cryptex calculate the MD5 password-verification hash from the SHA hash value and not directly from the plaintext password?

a.

Because it is impossible to obtain the original data from the MD5 hash value stored in the header.

b.

Because someone would be able to covert the MD5 hash value to an equivalent SHA hash value.

c.

Because the plaintext password might not be available at the time of verification.

d.

Because it is virtually guaranteed to be mathematically impossible to obtain the original data from the SHA hash value.

Posted under Reverse Engineering

Answer: (b).Because someone would be able to covert the MD5 hash value to an equivalent SHA hash value. Explanation:Cryptex calculates the MD5 password-verification hash from the SHA hash value and not directly from the plaintext password because of the (admittedly remote) possibility that someone would be able to covert the MD5 hash value to an equivalent SHA hash value and effectively obtain the decryption key.

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Q. Why does Cryptex calculate the MD5 password-verification hash from the SHA hash value and not directly from the plaintext password?

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