Advanced Encryption Algorithm and Block Cipher Operation

This is a computer science engineering quiz on cryptography and network security, which includes questions on Advanced Encryption Algorithm and Block Cipher Operation.

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AES uses a ____________ bit block size and a key size of __________ bits.

128; 128 or 256 64; 128 or 192 256; 128, 192, or 256 128; 128, 192, or 256

Like DES, AES also uses Feistel Structure.

True False

Which one of the following is not a cryptographic algorithm- JUPITER, Blowfish, RC6, Rijndael and Serpent?

JUPITER Blowfish Serpent Rijndael

Which algorithm among- MARS, Blowfish, RC6, Rijndael and Serpent -was chosen as the AES algorithm?

MARS Blowfish RC6 Rijndael

How many rounds does the AES-192 perform?

10 12 14 16

What is the expanded key size of AES-192?

44 words 60 words 52 words 36 words

How many rounds does the AES-256 perform?

10 12 14 16

In AES the 4×4 bytes matrix key is transformed into a keys of size __________

32 words 64 words 54 words 44 words

For the AES-128 algorithm there are __________ similar rounds and _________ round is different.

2 pair of 5 similar rounds ; every alternate 9 ; the last 8 ; the first and last 10 ; no

A stream cipher key is usually of size ___ or 128 bits.

56 64 54 48

Which among the following has the lowest bitrate ?

PRF TRNG PRNG All have the same bitrate

Maurer’s Universal Statistical Test is –

A test to determine whether the number of runs of ones and zeros of various lengths is as expected

A test to detect if a sequence can be significantly compressed without loss of information

A test to determine whether the number of ones and zeros in a sequence is approx the same as in a truely random o/p

A test for the check of evenness in the 1s and 0s

The 4×4 byte matrices in the AES algorithm are called:

States

Words

Transitions

Permutations

Runs Test is:

A test to determine whether the number of runs of ones and zeros of various lengths is as expected

A test to detect if a sequence can be significantly compressed without loss of information

A test to determine whether the number of ones and zeros in a sequence is approx the same as in a truely random o/p

A test for the check of evenness in the 1s and 0s

Frequency Test is:

A test to determine whether the number of runs of ones and zeros of various lengths is as expected

A test to detect if a sequence can be significantly compressed without loss of information

A test for the check of evenness in the 1s and 0s

A test to determine whether the number of ones and zeros in a sequence is approx the same as in a truely random o/p

Quiz/Test Summary

Title: Advanced Encryption Algorithm and Block Cipher Operation

Questions: 15

Contributed by:

james Wed, Apr 06, 2022 07:50 AM UTC

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