Date Added: Feb 2011
Ubiquitous computing attempts to provide services in an invisible way with least user intervention. In ubiquitous computing domain context awareness is an important issue. So, mere protection of message confidentiality is not sufficient for most of the applications where context-awareness can lead to near deterministic ideas. An adversary might deduce sensitive information by observing the contextual data, which when correlated with prior information about the people and the physical locations that are being monitored by a set of sensors can reveal most of the sensitive information. So, it is obvious that for security and privacy preservation in ubiquitous computing context protection is of equal importance.