Question

In the Key generation procedure, the Integrity Key from the client to server is represented as:

(a) HASH(K||H||”E”||session_id)

(b) HASH(K||H||”C”||session_id)

(c) HASH(K||H||”B”||session_id)

(d) HASH(K||H||”D”||session_id)

I have been asked this question at a job interview.

Origin of the question is Secure Shell(SSH) in division Internet Protocol, Network Addressing and Transport Level Security of Cryptograph & Network Security

Answer 1

Correct choice is (a) HASH(K||H||”E”||session_id)

The explanation is: The Initialization Vector from the client to server is given by HASH(K||H||”E”||session_id).