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关键词： RFID   Security analysis   Authentication   Healthcare   Biometric  

摘要： Internet of medical things (IoMT) is bringing many opportunities for healthcare and our personal lives. For example, using this technology a healthcare provider can remotely monitor, collect and analyze data of patients using smart sensors that are connected to them. With this trend on the rise, data protection and information security in healthcare environments are now major concerns. Authentication before starting the data transmission is a common approach to provide data security. Recently, Mohammedi et al. have proposed a lightweight biometric-based authentication scheme for mobile healthcare environments and have claimed that their scheme is secure against known attacks in the context of RFID authentication protocols. However, in this paper, we provide a more detailed analysis of the this scheme and show that their protocol is vulnerable to a man-in-the-middle attack. Furthermore, we demonstrate that their protocol does not provide other security requirements such as forward secrecy, anonymity, and untraceability. To remedy these weaknesses, we propose an improved scheme and demonstrate that the proposed scheme can withstand common attacks while it requires approximately 23% less computation time and 50% less communication overhead than the Mohammediet ***. We also formally evaluate the security of the proposed protocol by Scyther tool, which is a widely accepted automated tool for this purpose.

关键词： Physical document security   Anti-counterfeiting   Impersonation   Privacy   Biometrics   RFID   QR codes  

摘要： The privacy and security of identity documents like Passports, PAN cards, Driving License as well as other important personal documents like academic degree certificates are now at an all-time high, given how easy and cheap the new technologies make it to produce forged documents which not just carry threat to an individual's respect in society or career aspirations but can also prove to be life threatening if they are placed in the wrong hands. Thus, it is very important to have mechanisms that prevent or rather make it computationally unfeasible to forge these important documents. In this paper, we present an extensive review of techniques aimed at making tamper resistant physical documents, published across last two decades. We provide an in-depth classification of the means used for securing documents in the existing literature, discuss their limitations, open areas and future insights to address the open issues and challenges.

关键词： RFID textronic transponder   UHF textronic tag   Internet of Textile Things (IoTT)   Internet of Things (IoT)   textronics   RFIDtex   sewn UHF antenna   impedance matching   inductive coupling system  

摘要： In order to respond the growing interest towards radio frequency identification textile transponders, the authors propose a new approach to design radio frequency identification (RFID) devices by introducing the RFIDtex concept. The coupling system of inductive loops is implemented in the textronic structure with the RFID interface in order to split the transponder into two independently manufactured components. Then both modules can be easily integrated into the RFIDtex tag. The presented simulation and measurement results prove the concept of manufacturing a relatively small antenna in the form of a meandered dipole sewn in with a single thread, and further, that can be connected to the RFID chip through the coupling system without galvanic junctions. The achieved parameters clearly indicate that the tag can correctly communicate with the read/write device as well as the coupling between its both parts works properly, and the impedance matching is possible in this case. The possibility of confectioning products with electronic identification tags at the textile factory site and improved resistance to the impact of environmental conditions are the main advantage of the proposed approach to the RFID devices designing. The RFIDtex transponder idea proposed by the authors was restricted in the patent no PL 231291 B1.

关键词： IoV   Search protocol   Security analysis   Matrix encryption   MDS matrix  

摘要： The new era of the Internet of Things is driving the evolution of conventional vehicle ad hoc networks into the Internet of vehicles (IoV). Radio frequency identification (RFID) is a reliable and advanced instrument used for automated data collection, processing and tracking, which is widely used in IoV. One of the important features of an RFID system is its ability to search for a particular tag among a group of tags. Since the RFID tags used in vehicles are commonly resource-constrained, the purpose is to propose a lightweight tag searching protocol that meets the security requirements while at the same time it is respecting the requirements for efficient implementation. In this regard, a lightweight tag search protocol, which is based on permutation matrices, has recently been proposed by Fan et al. and claimed to be secure against various attacks. In this paper, we analyze the security of this protocol and show that this scheme is vulnerable to de-synchronization and disclosure attacks. The latter attack can disclose all the secret information stored in a tag such as the identity, the shared secret key and the two secret permutation matrices that are used as encryption functions. To address these vulnerabilities, we propose an improved lightweight tag search protocol based on maximum distance separable matrices. As a result of security analysis, we can see that the improved scheme is secure against passive and active attacks, including disclosure and de-synchronization attack. Finally, we implement the improved protocol in ISE 14.6 environment for Virtex-7 FPGAs and compare the performance with some related protocols. The implementation results show that the improved scheme is particularly well suited for use in RFID systems.

关键词： internet of things (IoT)   LTE 2500   mechanically reconfigurable   RFID   WLAN   WSN  

摘要： In this paper, the concept of a novel mechanically reconfigurable antenna with spectral diversity, for internet of things (IoT) applications is presented. The prototype consists of a rectangular microstrip patch antenna placed upon a dielectric slab with four end-to-end cavities that are perceived as binary bits. The status of each bit depends on the material filling it. Since four cavities are included in proposed system, a total of 16 combinations, each yielding unique impedance characteristic, are exhibited. Here, FR4 epoxy (epsilon(r)= 4.4 and tan delta= 0.02) is used as substrate with 2.4 mm thickness. The same material is used to fill the cavities in one case, while, in the second case the cavities are filled with Rogers RT/duroid 6010/6010LM (tm) material that has dielectric constant, 10.2. It is shown that by using a higher dielectric constant material as filler, the range of variation of resonant frequency can be increased. In both cases, the prototype exhibits capability to reconfigure its operating bandwidth from 2.4GHz WLAN (2400-2480 MHz) to LTE2500 (2496-2690 MHz). Besides, for some combinations, the prototype covers a frequency span beyond LTE till 3000 MHz for wireless-sensor-network based applications. One among the potential application of the proposed design as a chipless RFID tag is also discussed in this work.

关键词： Radio-frequency identification (RFID)   respiration monitoring   tensor decomposition   driving environment  

摘要： To improve driving safety and avoid accidents caused by driving fatigue, drowsiness detection aims to alarm the driver before he/she falls asleep. Since breathing rate is a key indicator of the drowsy state, respiration monitoring in the noisy driving environment is critical for developing an effective driving fatigue detection system. In this paper, we propose, for the first time, an RFID based respiration monitoring system for driving environments. The system estimates the respiration rate of a driver based on phase values sampled from multiple RFID tags attached to the seat belt, while exploiting the tag diversity to combat the strong noise in the driving environment. Both tensor completion and tensor Canonical Polyadic Decomposition (CPD) are applied to process the phase values, to overcome the influence of frequency hopping, random sampling, vehicle vibration, and other environmental movements. The proposed system is analyzed and implemented with commodity RFID devices. Its accurate and robust performance is demonstrated with extensive experiments conducted in a real driving car.

关键词： RFID tag antenna   long-range RFID tag   cavity antenna   convex tag antenna   RFID metal tag   RFID sensors   painted RFID tag antenna   IoT RFID sensor   3D antenna   concave antenna   energy harvesting  

摘要： In this paper, we describe a long-range convex cavity-type passive ultra-high-frequency (UHF) radio frequency identification (RFID) tag to use on various metal and non-metal surfaces, for IoT sensor energy harvesting. The tag antenna is built on the 3D printed cavity structure with polylactic acid (PLA) plastic and painted with the conductive ink on the 1 mm protruding area (convex) of inner surface and the side-walls of the cavity structure to form a cavity structure. The tag is designed to operate in the UHF band (840-960 MHz). This long-range cavity tag antenna (CTA) works at both 920 MHz and 915 MHz UHF RFID frequencies. It provides a linear polarized (LP) frontal reading range of 35 m and side reading range above 15 m when mounted on either metal or non-metal objects. We describe the antenna characteristics, structure, modeling, simulation, and experimental results. A mathematical reading range also was calculated and compared with experimental data.

关键词： Sensor networks  

摘要： In the RFID sensor network (RSN), the devices communicate with each other by RF waves using the antennas through a propagation channel. A poor communication between these devices results in either a significant economic loss or security threats. The communication problems can have several origins depending on the type of antenna used and the nature of the propagation channel. In this work, our objective is to limit the communication problems between the nodes of this network that are linked to the characteristics of an indoor propagation channel. The goal is to predict the channel characteristics using the 3D ray tracing method in order to select the appropriate transmission parameters such as transmission power and duration of a symbol. To achieve this, we have modeled a building that is sectioned as a propagation channel where network devices are deployed for control and monitoring. The communication was made at 915 MHz using the quasi-isotropic 3D cubic antenna that we designed as well as a conventional dipole antenna in order to compare the results. We have found that the use of the 3D cubic antenna gives several advantages to the RFID sensor network compared to the most commonly used conventional dipole antenna, such as a transmission power of 0 dBm which automatically leads to an increase in the lifetime of the devices, as well as a minimum symbol duration of around 219.78 ns which gives a high bit rate.