Research Article
Secure and efficient key distribution for collaborative applications
@INPROCEEDINGS{10.1109/COLCOM.2005.1651220, author={Fuwen Liu and Hartmut Koenig}, title={Secure and efficient key distribution for collaborative applications}, proceedings={1st International Conference on Collaborative Computing: Networking, Applications and Worksharing}, publisher={IEEE}, proceedings_a={COLLABORATECOM}, year={2006}, month={7}, keywords={Authentication Business communication Collaboration Cryptography Delay Internet Mobile communication Peer to peer computing Protocols Videoconference}, doi={10.1109/COLCOM.2005.1651220} }- Fuwen Liu
Hartmut Koenig
Year: 2006
Secure and efficient key distribution for collaborative applications
COLLABORATECOM
IEEE
DOI: 10.1109/COLCOM.2005.1651220
Abstract
Confidentiality is a key demand for many collaborative applications in the Internet, e.g. business meetings. In a more and more mobile society there is an increasing need of spontaneous meetings in ad hoc environments, often with changing partners. To assure confidentiality of such meetings the partners have to agree upon a common secret key for encrypting their communication. While centralized collaborative systems provide practicable solutions for this, it still represents a challenging task in decentralized systems using the peer-to-peer paradigm. In this paper we present a simple key distribution protocol, called VTKD, which was especially designed for small dynamic peer groups. It consists of two parts: a mutual authentication of the partners and a secure key renewal. The protocol uses a virtual token to determine the partner responsible for the key generation and distribution procedure. VTKD fulfills the relevant demands concerning group key exchange and is more efficient related to key renewal delay than existing key exchange protocols.
