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The 4×4 byte matrices in the AES algorithm are called

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The 4×4 byte matrices in the AES algorithm are called

(a) States

(b) Words

(c) Transitions

(d) Permutations

I have been asked this question in unit test.

My question is taken from The AES Algorithm topic in section Advanced Encryption Algorithm and Block Cipher Operation of Cryptograph & Network Security

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Best answer
The correct option is (a) States

Easy explanation: The matrices are called states.

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