- WiMAX Security (Authentication, DoS, Privacy)
- Security analysis in 3G (CDMA2000) and 4G networks
- Cloning/fraud detection and mitigation
- Multi-realm authentication interworking between CDMA2000 and WiMAX networks
- Wireless security (Bluetooth, IEEE 802.11, etc.)
Defense against clone attacks in sensor networks (May 2006 ~ March 2007)
Sensors are deployed and operate in a hostile environment with no centralized control. Inexpensive sensors may not be equipped with tamper-resistant hardware. Thus, private information may be obtained from captured sensors. These sensors may then be cloned and deployed in the sensor network to launch a variety of attacks. In this project, we propose a scheme to detect clones, called SET (Securecomm 2007)
Anonymous Communication in MANETs (September 2005 ~ March 2007)
Mobile ad hoc networks often support sensitive applications. These applications may require that user's identity, location, and correspondents be kept secret. This is a challenge in a MANET because of the cooperative nature of the network. In this project, we propose a privacy preserving communication system (PPCS) for MANETs. (SECON 2007)
Anonymous and Secure Reporting System in MANETs (September, 2004 ~ July, 2005)
Mobile nodes in civilian ad hoc networks are rational, i.e., they pursue their own self-interest. Previous research focuses on monitoring the behavior of nodes in such settings based on information learned and provided by neighboring nodes. We proposed a protocol that uses nodes on the data path to securely produce packet forwarding reports. Reporting nodes are chosen randomly and secretly so that malicious nodes cannot modify their behavior based upon the monitoring point. (published in Mobiquitous 2005 and WINET 2007)
Multi-layered IPsec was proposed to allow intermediate nodes to see a portion of a packet to execute performance enhancements or other functions in the Internet while keeping data payloads secret. In this project, we proposed a model to integrate multi-layered IPsec and Mobile IP. We also defined key distribution protocols to support mobility. We fully implemented and evaluated the key distribution protocols based on IKE version1 and IKE version 2. (published in INFOCOM 2005 and in the ACM/Kluwer Wireless Networks, 2007)
The key distribution protocol specifications and software are available at http://www.cse.psu.edu/~hchoi/mmlipsec.htm.
Go back home
