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Why the input cipher for AES encryption, can write in 4x4 matrix with 8 bits entires, and can said is 128bits? if each cell is 8bits in binary, how we said this matrix is represent 128bits?

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A 4x4 matrix has 16 entries. Each entry is 8 bits. 16 times 8 bits is 128 bits. Anything unclear? –  fgrieu Apr 11 at 6:07
    
@fgrieu ya, great –  atom2ueki Apr 11 at 14:52

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