Scalable Gaussian Normal Basis Multipliers over GF(2m) Using Hankel Matrix-Vector Representation

  • Authors:
  • Chiou-Yng Lee;Che Wun Chiou

  • Affiliations:
  • Department of Computer Information and Network Engineering, Lunghwa University of Science and Technology, Taoyuan County, Republic of China 333;Department of Computer Science and Information Engineering, Ching Yun University, Chung-Li, Republic of China 320

  • Venue:
  • Journal of Signal Processing Systems
  • Year:
  • 2012

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Abstract

This work presents a novel scalable multiplication algorithm for a type-t Gaussian normal basis (GNB) of GF(2m). Utilizing the basic characteristics of MSD-first and LSD-first schemes with d-bit digit size, the GNB multiplication can be decomposed into n(n驴+驴1) Hankel matrix-vector multiplications. where n驴=驴(mt驴+驴1)/d. The proposed scalable architectures for computing GNB multiplication comprise of one d驴脳驴d Hankel multiplier, four registers and one final reduction polynomial circuit. Using the relationship of the basis conversion from the GNB to the normal basis, we also present the modified scalable multiplier which requires only nk Hankel multiplications, where k驴=驴mt/2d if m is even or k驴=驴(mt驴驴驴t驴+驴2)/2d if m is odd. The developed scalable multipliers have the feature of scalability. It is shown that, as the selected digit size d驴驴驴8, the proposed scalable architectures have significantly lower time-area complexity than existing digit-serial multipliers. Moreover, the proposed architectures have the features of regularity, modularity, and local interconnection ability. Accordingly, they are well suited for VLSI implementation.