Cross-layer key establishment protocols for wireless devices

There are some problems in existing key establishment protocols. To alleviate these problems, in our thesis, we designed a few cross-layer key establishment protocols by cooperatively using the characteristics of higher layers and physical layer. Additionally, the security and performance analyses show that our protocols perform better than others.<br /

Security Framework for the Web of IoT Platforms

Connected devices of IoT platforms are known to produce, process and exchange vast amounts of data, most of it sensitive or personal, that need to be protected. However, achieving minimal data protection requirements such as confidentiality, integrity, availability and non-repudiation in IoT platforms is a non-trivial issue. For one reason, the trillions of interacting devices provide larger attack surfaces. Secondly, high levels of personal and private data sharing in this ubiquitous and heterogeneous environment require more stringent protection. Additionally, whilst interoperability fuels innovation through cross-platform data flow, data ownership is a concern. This calls for categorizing data and providing different levels of access control to users known as global and local scopes. These issues present new and unique security considerations in IoT products and services that need to be addressed to enable wide adoption of the IoT paradigm. This thesis presents a security and privacy framework for the Web of IoT platforms that addresses end-to-end security and privacy needs of the platforms. It categorizes platforms’ resources into different levels of security requirements and provides appropriate access control mechanisms

An authentic-based privacy preservation protocol for smart e-healthcare systems in iot

© 2013 IEEE. Emerging technologies rapidly change the essential qualities of modern societies in terms of smart environments. To utilize the surrounding environment data, tiny sensing devices and smart gateways are highly involved. It has been used to collect and analyze the real-time data remotely in all Industrial Internet of Things (IIoT). Since the IIoT environment gathers and transmits the data over insecure public networks, a promising solution known as authentication and key agreement (AKA) is preferred to prevent illegal access. In the medical industry, the Internet of Medical Things (IoM) has become an expert application system. It is used to gather and analyze the physiological parameters of patients. To practically examine the medical sensor-nodes, which are imbedded in the patient\u27s body. It would in turn sense the patient medical information using smart portable devices. Since the patient information is so sensitive to reveal other than a medical professional, the security protection and privacy of medical data are becoming a challenging issue of the IoM. Thus, an anonymity-based user authentication protocol is preferred to resolve the privacy preservation issues in the IoM. In this paper, a Secure and Anonymous Biometric Based User Authentication Scheme (SAB-UAS) is proposed to ensure secure communication in healthcare applications. This paper also proves that an adversary cannot impersonate as a legitimate user to illegally access or revoke the smart handheld card. A formal analysis based on the random-oracle model and resource analysis is provided to show security and resource efficiencies in medical application systems. In addition, the proposed scheme takes a part of the performance analysis to show that it has high-security features to build smart healthcare application systems in the IoM. To this end, experimental analysis has been conducted for the analysis of network parameters using NS3 simulator. The collected results have shown superiority in terms of the packet delivery ratio, end-to-end delay, throughput rates, and routing overhead for the proposed SAB-UAS in comparison to other existing protocols

Masquerading Techniques in IEEE 802.11 Wireless Local Area Networks

The airborne nature of wireless transmission offers a potential target for attackers to compromise IEEE 802.11 Wireless Local Area Network (WLAN). In this dissertation, we explore the current WLAN security threats and their corresponding defense solutions. In our study, we divide WLAN vulnerabilities into two aspects, client, and administrator. The client-side vulnerability investigation is based on examining the Evil Twin Attack (ETA) while our administrator side research targets Wi-Fi Protected Access II (WPA2). Three novel techniques have been presented to detect ETA. The detection methods are based on (1) creating a secure connection to a remote server to detect the change of gateway\u27s public IP address by switching from one Access Point (AP) to another. (2) Monitoring multiple Wi-Fi channels in a random order looking for specific data packets sent by the remote server. (3) Merging the previous solutions into one universal ETA detection method using Virtual Wireless Clients (VWCs). On the other hand, we present a new vulnerability that allows an attacker to force the victim\u27s smartphone to consume data through the cellular network by starting the data download on the victim\u27s cell phone without the victim\u27s permission. A new scheme has been developed to speed up the active dictionary attack intensity on WPA2 based on two novel ideas. First, the scheme connects multiple VWCs to the AP at the same time-each VWC has its own spoofed MAC address. Second, each of the VWCs could try many passphrases using single wireless session. Furthermore, we present a new technique to avoid bandwidth limitation imposed by Wi-Fi hotspots. The proposed method creates multiple VWCs to access the WLAN. The combination of the individual bandwidth of each VWC results in an increase of the total bandwidth gained by the attacker. All proposal techniques have been implemented and evaluated in real-life scenarios

Advanced Dynamic Encryption – A Security Enhancement Protocol for IEEE 802.11 and Hybrid Wireless Network

Data integrity and privacy are the two most important security requirements in wireless communication. Most mechanisms rely on pre-share key data encryption to prevent unauthorized users from accessing confidential information. However, a fixed secret key is vulnerable to cracking by capturing sufficient packets or launching a dictionary attack. In this research, a dynamic re-keying encryption protocol was developed to enhance the security protection for IEEE 802.11 and hybrid wireless network. This protocol automatically updates the secret key during the end-to-end transmission between wireless devices to protect the network and the communication privacy. In addition, security analyses are given to verify the protection of this protocol. Experiment results also validate that the dynamic encryption approach can perform as efficiently as other security architectures while providing an additional layer of data protection

A framework for IPSec functional architecture.

In today\u27s network, various stand-alone security services and/or proxies are used to provide different security services. These individual security systems implementing one single security function cannot address security needs of evolving networks that require secure protocol such as IPSec. In this paper, we provide a framework for implementing IPSec security functions in a well structured functional architecture. The proposed architecture is modular and allows for composing software applications from products commercially available and developed by different suppliers to implement the entire security requirements of IPSec protocol. In addition the proposed architecture is robust in the sense that it supports open standards and interfaces, and implements security functions of IPSec as an integrated solution under a unified security management system.Dept. of Electrical and Computer Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2005 .F34. Source: Masters Abstracts International, Volume: 44-03, page: 1451. Thesis (M.Sc.)--University of Windsor (Canada), 2005