Virtual Labs

Computer Science and Engineering Cryptography Lab Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Experiment 5 - AES Encryption

Choose difficulty:

Beginner

Intermediate

Advanced

Which AES operation mixes the bytes within each column of the state?

a: SubBytes Explanation

Explanation

b: ShiftRows Explanation

Explanation

c: MixColumns Explanation

Explanation

d: AddRoundKey Explanation

Explanation

What is the purpose of the ShiftRows step in AES encryption?

a: To substitute bytes using the S-box Explanation

Explanation

b: To permute the bytes within the state Explanation

Explanation

c: To expand the key Explanation

Explanation

d: To add the round key to the state Explanation

Explanation

What key length does AES not support?

a: 128-bit Explanation

Explanation

b: 256-bit Explanation

Explanation

c: 512-bit Explanation

Explanation

d: 192-bit Explanation

Explanation

The total number of rounds required for AES with 128 bit key is ______

a: 11 Explanation

Explanation

b: 10 Explanation

Explanation

c: 14 Explanation

Explanation

d: 12 Explanation

Explanation

In AES, no of operations to be followed in 10th round is _______.

a: 2 Explanation

Explanation

b: 3 Explanation

Explanation

c: 4 Explanation

Explanation

d: 5 Explanation

Explanation

Community Links Sakshat Portal Outreach Portal FAQ: Virtual Labs

AGPL 3.0 & Creative Commons (CC BY-NC-SA 4.0)