adplus-dvertising
frame-decoration

Question

Which of the 4 operations are false for each round in the AES algorithm ?

i) Substitute Bytes
ii) Shift Columns
iii) Mix Rows
iv) XOR Round Key

a.

i) only

b.

ii) iii) and iv)

c.

ii) and iii)

d.

only iv)

Answer: (b).ii) iii) and iv)

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Which of the 4 operations are false for each round in the AES algorithm ? i) Substitute Bytes ii) Shift Columns iii) Mix Rows iv) XOR Round Key

Similar Questions

Discover Related MCQs

Q. There is an addition of round key before the start of the AES round algorithms.

Q. The multiplicative inverse of 0x95 in AES where m(x)=x^8+x^4+x^3+x+1 is

Q. How many computation rounds does the simplified AES consists of?

Q. For an inputs key of size 128 bits constituting of all zeros, what is w(7) ?

Q. On comparing AES with DES, which of the following functions from DES does not have an equivalent AES function?

Q. On perform the Mix Columns transformation for the sequence of bytes “77 89 AB CD” we get output

Q. n perform the Mix Columns transformation for the sequence of bytes “67 89 AB CD” we get output

Q. Is the following matrix the inverse matrix of the matrix used in the mix columns step?

x3 + 1 x
x x3 + 1

Q. For the cipher text 0000 0111 0011 1000 and Key 0110 1111 0110 1011, apply the Simplified AES to obtain the plaintext. The plain text is

Q. What is the block size in the Simplified AES algorithm?

Q. What is the key size in the S-AES algorithm?

Q. S-AES and S-DES were both developed by the same person as an educational cryptography system to teach students

Q. Which of the following is a faulty S-AES step function?

Q. How many step function do Round 1 and 2 each have in S-AES?

Q. For a key 25D5 and PT input A479 what is the output we obtain after the “add round key” function?

Q. The inverse transformation matrix times the forward transformation matrix equals the identity matrix.

Q. Which of the following are true ?

i) In the AES key expansion algorithm, the function g() operates on w i+3
ii) Perform a one-byte right circular rotation on the argument 4-byte word
iii) The round constant follows the formula RC[j] = RC[j − 1]

Q. How many round keys are generated in the AES algorithm?

Q. How many modes of operation are there in in DES and AES?

Q. Which one of the following modes of operation in DES is used for operating short data?