Authentication and identification for next generation communication systems

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Authentication of information is arguably the most important security goal in modern electronic communication systems. Receiving a message on a computer terminal needs assurance that the message is coming from the claimed sender and it has not been tampered with. This assurance does not exist for most communications over the Internet today. Inadequate security for identification of users, devices and services, and authentication of messages has made attacks such as identity theft and fake websites, a major security concern. Authentication systems provide assurance for communicants about entities involved in the communication and the messages that are exchanged. Authentication systems must also meet the challenges resulting from the advancement of technologies and the introduction of new services. Applications such as social networking and instant tele-conferencing require secure authentication in dynamic groups. Multimedia data is produced at very large volumes and multimedia authentication systems have special requirements such as tolerance to small changes in data. A growing concern in authentication systems is users' privacy and the assurance that users' data cannot be later used to breach their privacy.