Mixed bases for efficient inversion in F((22)2) 2 and conversion matrices of subbytes of AES

Yasuyuki Nogami, Kenta Nekado, Tetsumi Toyota, Naoto Hongo, Yoshitaka Morikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

32 Citations (Scopus)

Abstract

A lot of improvements and optimizations for the hardware implementation of SubBytes of Rijndael, in detail inversion in have been reported. Instead of the Rijndael original , it is known that its isomorphic tower field has a more efficient inversion. For the towerings, several kinds of bases such as polynomial and normal bases can be used in mixture. Different from the meaning of this mixture of bases, this paper proposes another mixture that contributes to the reduction of the critical path delay of SubBytes. To the -inversion architecture, for example, the proposed mixture inputs and outputs elements represented with normal and polynomial bases, respectively.

Original languageEnglish
Title of host publicationCryptographic Hardware and Embedded Systems, CHES 2010 - 12th International Workshop, Proceedings
Pages234-247
Number of pages14
DOIs
Publication statusPublished - Nov 5 2010
Event12th International Workshop on Cryptographic Hardware and Embedded Systems, CHES 2010 - Santa Barbara, CA, United States
Duration: Aug 17 2010Aug 20 2010

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume6225 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other12th International Workshop on Cryptographic Hardware and Embedded Systems, CHES 2010
CountryUnited States
CitySanta Barbara, CA
Period8/17/108/20/10

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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    Nogami, Y., Nekado, K., Toyota, T., Hongo, N., & Morikawa, Y. (2010). Mixed bases for efficient inversion in F((22)2) 2 and conversion matrices of subbytes of AES. In Cryptographic Hardware and Embedded Systems, CHES 2010 - 12th International Workshop, Proceedings (pp. 234-247). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 6225 LNCS). https://doi.org/10.1007/978-3-642-15031-9_16