Title: Efficient hardware for modular exponentiation using the sliding-window method

Authors: Rodrigo Martins da Silva, Nadia Nedjah, Luiza de Macedo Mourelle

Addresses: Department of Electronics Engineering and Telecommunications, State University of Rio de Janeiro, Rio de Janeiro, Brazil. ' Department of Electronics Engineering and Telecommunications, State University of Rio de Janeiro, Rio de Janeiro, Brazil. ' Department of Systems Engineering and Computation, State University of Rio de Janeiro, Rio de Janeiro, Brazil

Abstract: Modular exponentiation is an essential operations for various applications, such as cryptography. The performance of this operations has a tremendous impact on the efficiency of the whole application. Therefore, many researchers devoted special interest to providing smart methods and efficient implementation for modular exponentiation. One these methods is the sliding-window method, which preprocesses the exponent into zero and non-zero partitions so that the number of modular multiplications required to compute the modular power is reduced. In this paper, we devise a novel harwdare for computing modular exponentiation using the sliding-window method. The implementation is efficient when compared against existing hardware implementations of the modular exponentiation.

Keywords: cryptography; modular multiplication; modular exponentiation; sliding window method; hardware efficiency.

DOI: 10.1504/IJHPSA.2008.021799

International Journal of High Performance Systems Architecture, 2008 Vol.1 No.3, pp.199 - 206

Published online: 04 Dec 2008 *

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