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Showing 3 results for Iot
Ultra Low Power Symmetric Pass Gate Adiabatic Logic with CNTFET for Secure IoT Applications
S. Mirzakuchaki, A. Heidari,
Volume 15, Issue 2 (6-2019)
Abstract
With the advent and development of the Internet of Things, new needs arose and more attention was paid to these needs. These needs include: low power consumption, low area consumption, low supply voltage, higher security and so on. Many solutions have been proposed to improve each one of these needs. In this paper, we try to reduce the power consumption and enhance the security by using SPGAL, a DPA-resistant Logic, and Carbon Nanotube FETs (CNTFETs) instead of conventional CMOS and MOSFET technology, for IoT devices. All simulations are done with HSPICE.

Low Power True Random Number Generator through Ring Oscillator for IoT and Smart Card Applications
G. Morankar,
Volume 17, Issue 3 (9-2021)
Abstract
Tremendous developments in integrated circuit technology, wireless communication systems, and personal assistant devices have fuelled growth of Internet of Things (IoT) applications and smart cards. The security of these devices completely depends upon the generation of random and unpredictable digital data streams through random number generator. Low quality, low throughput, and high processing time are observed in software-based pseudo-random number generator due to interrelated data or programs and serial execution of codes respectively. In this paper, FPGA implementation of low power true random number generator through ring oscillator for IoT applications and smart cards is presented. Ring oscillators based on higher jitter and sampling techniques were exploited to present true random number generator. Further statistical parameters of the generated data streams are enhanced through feedback mechanism and post-processing technique. The presented true random number generator technique does not depend on the characteristics of a particular FPGA. The presented technique consumes low power, requires low hardware footprints and passes the entire National Institute of Standards & Technology (NIST) 800-22 statistical test suite. The presented low power and area true random number generator with enhanced security through post-processing unit may be applied for encryption/decryption of data in IoT and smart cards.

Linear Subspace Cryptanalysis and Improvement of a Flexible and Lightweight Group Authentication Scheme
A. Rezapour, Z. Ahmadian,
Volume 19, Issue 1 (3-2023)
Abstract
Shamir’s secret sharing scheme is one of the substantial threshold primitives, based on which many security protocols are constructed such as group authentication schemes. Notwithstanding the unconditional security of Shamir's secret sharing scheme, protocols that are designed based on this scheme do not necessarily inherit this property. In this work, we evaluate the security of a lightweight group authentication scheme, introduced for IoT networks in IEEE IoT Journal in 2020, and prove its weakness against the linear subspace attack, which is a recently-proposed cryptanalytical method for secret sharing-based schemes. Then, we propose an efficient and attack-resistant group authentication protocol for IoT networks.

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© 2022 by the authors. Licensee IUST, Tehran, Iran. This is an open access journal distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.