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Security and Communication Networks
Volume 2018, Article ID 4983404, 18 pages
https://doi.org/10.1155/2018/4983404
Research Article

A Vendor-Neutral Unified Core for Cryptographic Operations in GF(p) and GF() Based on Montgomery Arithmetic

1Department of Electronic and Computer Engineering, University of Limerick, Limerick, Ireland
2Institute ProtectIT, Deggendorf Institute of Technology, 94469 Deggendorf, Germany

Correspondence should be addressed to Martin Schramm; ed.ged-ht@mmarhcs.nitram

Received 6 October 2017; Revised 14 March 2018; Accepted 17 May 2018; Published 21 June 2018

Academic Editor: Fawad Ahmed

Copyright © 2018 Martin Schramm et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the emerging IoT ecosystem in which the internetworking will reach a totally new dimension the crucial role of efficient security solutions for embedded devices will be without controversy. Typically IoT-enabled devices are equipped with integrated circuits, such as ASICs or FPGAs to achieve highly specific tasks. Such devices must have cryptographic layers implemented and must be able to access cryptographic functions for encrypting/decrypting and signing/verifying data using various algorithms and generate true random numbers, random primes, and cryptographic keys. In the context of a limited amount of resources that typical IoT devices will exhibit, due to energy efficiency requirements, efficient hardware structures in terms of time, area, and power consumption must be deployed. In this paper, we describe a scalable word-based multivendor-capable cryptographic core, being able to perform arithmetic operations in prime and binary extension finite fields based on Montgomery Arithmetic. The functional range comprises the calculation of modular additions and subtractions, the determination of the Montgomery Parameters, and the execution of Montgomery Multiplications and Montgomery Exponentiations. A prototype implementation of the adaptable arithmetic core is detailed. Furthermore, the decomposition of cryptographic algorithms to be used together with the proposed core is stated and a performance analysis is given.