Null data frames are a special but important type of frames in IEEE 802.11 WLANs. They are widely used in 802.11 WLANs for control purposes such as power management, channel scanni...
Abstract. There are a number of attacker models in the area of anonymous communication. Most of them are either very simplified or pretty abstract - therefore difficult to generali...
Abstract. Implementations of cryptographic protocols, such as OpenSSL for example, contain bugs affecting security, which cannot be detected by just analyzing abstract protocols (e...
Abstract. In this paper, we present the mechanisms needed for Byzantine fault tolerant coordination of Web services atomic transactions. The mechanisms have been incorporated into ...
Abstract. This paper proposes a door access control system with mobile phones which allows off-line delegations of an access. A model of door access control with mobile phones is ...