CNS-2nd QUIZ

A(n) _____________ is a keyless substitution cipher with N inputs and M outputs that uses a formula to define the relationship between the input stream and the output stream

• S-box

• P-box

• T-box

• none of the mentioned

A(n) _____________ is a keyless substitution cipher with N inputs and M outputs that uses a table to define the relationship between the input

• S-box

• P-box

• T-box

• None of the ementioned

A modern cipher is usually a complex _____ cipher made of a combination of different simple ciphers.

• round

• circle

• square

• None of the mentioned

DES is a(n) _______ method adopted by the US government.

• symmetric-key

• asymmetric-key

• Nither symmetric-key nor asymmetric-key

• Both symmetric-key and asymmetric-key

DES has an initial and final permutation block and _____ rounds.

• 14

• 15

• 16

• None of the mentioned

The DES function has _____ components

• 2

• 3

• 4

• 5

DES uses a key generator to generate sixteen _____ round keys.

• 32-bit

• 48-bit

• 54-bit

• 42-bit

___________ DES was designed to increase the size of DES Key

• Double

• Triple

• Quadruple

• None of the mentioned

One commonly used public-key cryptography method is the ___ algorithm

• RSS

• RAS

• RSA

• RAA

The _____ method provides a one-time session key for two parties

• Diffie-Hellman

• RSA

• DES

• AES