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Unformatted text preview: a 2,3 a 3,0 a 3,1 a 3,2 a 3,3 Unit 3 - 56 AES ByteSub The substitution layer uses a single S-box (rather than the 8 S-boxes used in DES). The Rijndael S-box is a 16 x 16 array Each element in the current column array serves as an address into the S-box where the first four bits identify the S-box row and the last 4 bits identify the S-box column. The S-box element at that location replaces the current column array element....
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This note was uploaded on 03/17/2011 for the course ECE 4472 taught by Professor Ouda during the Fall '10 term at UWO.
- Fall '10
- Information Security