Teaching TCP/IP Hands-On

Service discovery is critical to maintaining the privacy of clients and service providers. Individuals often disclose personal information when looking for services, or intruders can deduce this information from historical discovery data, so service-discovery protocols need to protect it from illegitimate access. Privacy-aware service-discovery protocols, however, must still be flexible and scalable so that they can support the requirements of service-oriented pervasive computing. We present EVEY (enhancing privacy of service discovery), a privacy-aware service-discovery protocol that supports syntactic and semantic matching between service requests and advertisements. It protects private information related to service discovery by introducing ambiguity in both service advertisements and service requests so that they can represent a group of services instead of a single, specific service instance.