Question 1

What is the formula m^e %n related to?

Options :

A : Generating Mersenne primes

B : Decrypting with RSA

C : Encrypting with RSA

D : Encrypting with EC

Answer: C

Question 2

In a Feistel cipher, the two halves of the block are swapped in each round. What does this provide?

Options :

A : Avalanche

B : Confusion

C : Substitution

D : Diffusion

Answer: B

Question 3

Cryptographic hashes are often used for message integrity and password storage. It is important to understand the common properties of all cryptographic hashes. What is not true about a hash?

Options :

A : Few collisions

B :

Variable length input

C : Reversible

D : Fixed length output

Answer: C

Question 4

Which one of the following is a component of the PKI?

Options :

A :

CA

B : TGS

C : TGT

D : OCSP

Answer: A

Question 5

A _________ is a digital representation of information that identifies you as a relevant entity by a trusted third party.

Options :

A : Ownership stamp

B : Digest

C : Hash

D : Digital Signature

Answer: D

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