An FPGA Implementation of a Montgomery Multiplier Over GF(2^m)

This paper describes an efficient FPGA implementation for modular multiplication in the finite field GF(2^m) that is suitable for implementing Elliptic Curve Cryptosystems. We have developed a systolic array implementation of a~Montgomery modular multiplication. Our solution is efficient for large finite fields (m=160-193), that offer a high security level, and it can be scaled easily to larger values of m. The clock frequency of the implementation is independent of the field size. In contrast to earlier work, the design is not restricted to field representations using irreducible trinomials, all one polynomials or equally spaced polynomials

PREFACE

[No abstract available

An FPGA implementation of a RISC-V based SoC system for image processing applications

The Laplacian filter is one of the fundamental applications in image processing. In our work, the Laplacian filter has been applied to an image, and both hardware and software implementation of the filter has been studied. Our system consists of an OV7670 Camera module, Nexys 4 DDR FPGA board and VGA monitor to display the processed video stream. Mentioned process has forwarding tasks: camera module captures raw RGB data and writes to RAM, Laplacian filter IP processes raw image and the results written back to memory. VGA modules show output images to monitor. The Laplacian filter part considered in hardware and software implementation is compared in terms of time and area.Scopus - Affiliation ID: 6010507

Analyzing and comparing the AES architectures for their power consumption

It has been a decade since the block cipher Rijndael-with some minor changes-takes the name AES (Advanced Encryption Standard) and becomes the new block cipher standard of US government. Over the passed years, through deeper analysis and conducted measurements, AES has gained significant confidence for its security. Meanwhile, the sophistication in its realizations has also evolved considerably; system designers are now able to choose a suitable AES architecture tailored for their area and performance needs. Couple of years ago, the wider technological trend has shifted towards the power aware system design, hence, low power AES architectures gain importance over area and performance oriented designs. In this study, we examine and employ the low power design techniques in reducing the power consumption. These efforts allow us to come up with a slightly different architecture for s-box module. As a result, the power consumptions of AES over the Field Programmable Gate Arrays (FPGAs) are reduced. All described work and respective measurements are carried on Xilinx FPGA families and possible comparisons are made with the existing literature

Privacy-Friendly Authentication in RFID Systems: On Sublinear Protocols Based on Symmetric-Key Cryptography

The Publisher's final version can be found by following the DOI linkThe recent advent of ubiquitous technologies has raised an important concern for citizens: the need to protect their privacy. So far, this wish was not heard of industrials, but national and international regulation authorities, as the European Commission recently published some guidelines to enforce customers' privacy in RFID systems: "Privacy by designâ is the way to be followed as stated in EC Recommendation of 12.5.2009. Research on privacy is an active domain but there is still a wide gap between theory and everyday life's applications. Filling this gap will require academia to design protocols and algorithms that fit the real-life constraints. In this paper, we provide a comprehensive analysis of privacy-friendly authentication protocols devoted to RFID that: 1) are based on well-established symmetric-key cryptographic building blocks; 2) require a reader complexity lower than O(N) where N is the number of provers in the system. These two properties are sine qua non conditions for deploying privacy-friendly authentication protocols in large-scale applications, for example, access control in mass transportation. We describe existing protocols fulfilling these requirements and point out their drawbacks and weaknesses. We especially introduce attacks on CHT, CTI,YA-TRAP*, and the variant of OSK/AO with mutual authentication. We also raise that some protocols, such as O-RAP, O-FRAP, and OSK/BF, are not resistant to timing attacks. Finally, we select some candidates that are, according to our criteria, the most appropriate ones for practical uses

IoT in Action: Design and Implementation of a Building Evacuation Service

With the development of sensor technologies, various application areas have emerged. The usage of these technologies and exploitation of recent improvements have clear benefits on building applications. Such use-cases can improve smart functions of buildings and can increase the end-user comfort. As a similar notion, building automation systems (BAS) are smart systems that target to provide automated management of various control services and to improve resource usage efficiency. However, buildings generally contain hardware and control services from a diverse set of characteristics. The automated and central management of such functions can be challenging. In order to overcome such issues, an Emergency Evacuation Service is proposed for BAS, where requirements of such central management model are analyzed and model content and subservice definitions are prepared. A crucial scenario, which could be a necessity for future BAS, is defined and an approach for evacuation of people in the buildings at emergency situations is proposed. For real-life scenarios, the Evacuation Service is implemented by using a low-cost design, which is appropriate for Internet of Things (IoT) based BAS applications. As demonstrated, the proposed service model can provide effective performance in real-life deployments

Privacy-friendly authentication in RFID systems : on sub-linear protocols based on symmetric-key cryptography

he recent advent of ubiquitous technologies has raised an important concern for citizens: the need to protect their privacy. So far, this wish was not heard of industrials, but national and international regulation authorities, as the European Commission recently published some guidelines to enforce customers’ privacy in RFID systems: “Privacy by design” is the way to be followed as stated in EC Recommendation of 12.5.2009. Research on privacy is an active domain but there is still a wide gap between theory and everyday life’s applications. Filling this gap will require academia to design protocols and algorithms that fit the real life constraints. In this paper, we provide a comprehensive analysis of privacy-friendly authentication protocols devoted to RFID that: (1) are based on well-established symmetric-key cryptographic building blocks; (2) require a reader complexity lower than O(N ) where N is the number of provers in the system. These two properties are sine qua non conditions for deploying privacy-friendly authentication protocols in large-scale applications, e.g., access control in mass transportation. We describe existing protocols fulfilling these requirements and point out their drawbacks and weaknesses. We especially introduce attacks on CHT, CTI, YA-TRAP*, and the variant of OSK/AO with mutual authentication. We also raise that some protocols, such as O-RAP, O-FRAP and OSK/BF are not resistant to timing attacks. Finally, we select some candidates that are, according to our criteria, the most appropriate ones for practical uses