Information and Network Security MCQs | Page - 11

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M

Mr. Dubey • 53.08K Points
Coach

Q. The S-Box is used to provide confusion, as it is dependent on the unknown key.

(A) True
(B) False
(C) none
(D) all
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M

Mr. Dubey • 53.08K Points
Coach

Q. For p = 11 and q = 17 and choose e=7. Apply RSA algorithm where PT message=88 and thus find the CT.

(A) 64
(B) 11
(C) 54
(D) 23
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M

Mr. Dubey • 53.08K Points
Coach

Q. For p = 11 and q = 17 and choose e=7. Apply RSA algorithm where Cipher message=11 and thus find the plain text.

(A) 122
(B) 143
(C) 111
(D) 88
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M

Mr. Dubey • 53.08K Points
Coach

Q. In an RSA system the public key of a given user is e = 31, n = 3599. What is the private key of this user?

(A) 1023
(B) 2432
(C) 2412
(D) 3031
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M

Mr. Dubey • 53.08K Points
Coach

Q. Compute private key (d, p, q) given public key (e=23, n=233 ´ 241=56,153).

(A) 32432
(B) 19367
(C) 12543
(D) 35212
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M

Mr. Dubey • 53.08K Points
Coach

Q. RSA is also a stream cipher like Merkel-Hellman.

(A) True
(B) False
(C) none
(D) all
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M

Mr. Dubey • 53.08K Points
Coach

Q. In the RSA algorithm, we select 2 random large values ‘p’ and ‘q’. Which of the following is the property of ‘p’ and ‘q’?

(A) p/q should give no remainder
(B) p and q should be prime
(C) p and q should be co-prime
(D) p and q should be divisible by Ф(n)
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M

Mr. Dubey • 53.08K Points
Coach

Q. In RSA, Ф(n) = _______ in terms of p and q.

(A) (p+1)(q+1)
(B) (p-1)(q-1)
(C) (p)(q)
(D) (p)/(q)
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R

Ranjeet • 34.60K Points
Instructor I

Q. Which of the following is a natural candidates for stream ciphers?

(A) OFB
(B) ECB
(C) CBC
(D) CFB
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