Cryptography Teacher Question:

What is the block size in the Simplified AES algorithm?
a) 8 bits
b) 40 bits
c) 16 bits
d) 36 bits

b) 40 bits
Explanation: The block size for the AES algorithm is 16 bits.

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On perform the Mix Columns transformation for the sequence of bytes “67 89 AB CD” we get output a) {08 55 FF 18} b) {28 45 EF 08} c) {28 45 FF 18} d) {25 35 EF 08}	A straight permutation cipher or a straight P-box has same number of inputs as cipher Frames Outputs Bits