In the AES structure both encryption and decryption ciphers begin with a(n) __________ stage, followed by nine rounds that each include all four stages,
Followed by a tenth round of three stages.
A)Substitute bytes
B)AddRoundKey
C)MixColumns
D)ShiftRows

Question

Quizplus · Accepted Answer

In the AES (Advanced Encryption Standard) structure, both encryption and decryption processes start with the AddRoundKey stage. This initial step involves combining the input plaintext or ciphertext with the key through a bitwise XOR operation, setting the stage for the subsequent rounds of transformation.

In the AES Structure Both Encryption and Decryption Ciphers Begin