Question 1

Which algorithm was U. S. Patent 5,231,668, filed on july 26, 1991, attributed to David W. Kravitz, and adopted by the U. S. government in 1993 with FIPS 186?

Options :

A : DSA

B : RSA

C : AES

D : RC4

Answer: A

Question 2

Which of the following algorithms uses three different keys to encrypt the plain text?

Options :

A : 3DES

B : Skipjack

C : Blowfish

D : AES

Answer: A

Question 3

Which of the following areas is considered a strength of symmetric key cryptography when compared with asymmetric algorithms?

Options :

A : Speed

B : Key distribution

C : Security

D : Scalability

Answer: A

Question 4

What is the largest key size that AES can use?

Options :

A : 128

B : 256

C : 512

D : 56

Answer: B

Question 5

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