Question: Advanced Encryption System ( AES ) Let a 1 2 8 - bit AES key k be all - zero, that is , k is

Advanced Encryption System (AES)
Let a 128-bit AES key k be all-zero, that is,k is the string
000...0 of length 128.
Find the round keys kj for jin{0,1,2,3}.
Let us modify AES by removing all ShiftRows and
MixColumns operations.
Can this modified block cipher be a pseudorandom
permutation? Why or why not?
What if only one of the two types of operations is missing?
Does it matter which of the two?
Advanced Encryption System ( AES ) Let a 1 2 8 -

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