Small hardware implementation of the subbyte function of...

Cryptography – Particular algorithmic function encoding

Reexamination Certificate

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C380S037000

Reexamination Certificate

active

07873161

ABSTRACT:
A small hardware implementation is provided for the Advanced Encryption Standard SubByte function that implements the affine transform and inverse transform in a single Affine-All transform using a multiplicative inverse ROM. The logic is greatly reduced and the maximum path delay is reduced compared to a multiplexor implementation and is slightly greater than a ROM implementation.

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Machine English Translation of specification & claims of WO 03/010919A1(previously cited).

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