Presentation 2004/5/20
An Algorithm Using Look-Up Table Based on Extended Euclid's Algorithm for Computing Inversion in GF(2^m)
Katsuki KOBAYASHI, Naofumi TAKAGI, Kazuyoshi TAKAGI,
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Abstract(in English) In this paper, an algorithm using look-up table based on extended Euclid's algorithm for computing inversion in GF(2^m) is proposed. In this algorithm, operations corresponding to several contiguous iterations of the conventional algorithm are represented in an array. To speed up the computation, this array is precomputed and stored in a look-up table. An inverter in GF(2^m) based in this algorithm has a the number of XOR stages reduced. Moreover, the processing time of a multiple-precision inversion over GF(2^m) in software implementation can be reduced using a w × (w + l)-bit multiplier over GF(2^m).
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Keyword(in English) Galois field / extended Euclid's algorithm / inversion / look-up table
Paper # VLD2004-2
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Committee VLD
Conference Date 2004/5/20(1days)
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Registration To VLSI Design Technologies (VLD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Algorithm Using Look-Up Table Based on Extended Euclid's Algorithm for Computing Inversion in GF(2^m)
Sub Title (in English)
Keyword(1) Galois field
Keyword(2) extended Euclid's algorithm
Keyword(3) inversion
Keyword(4) look-up table
1st Author's Name Katsuki KOBAYASHI
1st Author's Affiliation Department of Information Engineering, Graduate School of Information Science, Nagoya University()
2nd Author's Name Naofumi TAKAGI
2nd Author's Affiliation Department of Information Engineering, Graduate School of Information Science, Nagoya University
3rd Author's Name Kazuyoshi TAKAGI
3rd Author's Affiliation Department of Information Engineering, Graduate School of Information Science, Nagoya University
Date 2004/5/20
Paper # VLD2004-2
Volume (vol) vol.104
Number (no) 78
Page pp.pp.-
#Pages 6
Date of Issue