The increasing use of Internet in a variety of distributed multiparty interactions and transactions with strong real-time requirements has pushed the search for solutions to the problem of attribute-based digital interactions. A promising solution today is represented by automated trust...

Digital identity is defined as the digital representation of the information known about a specific individual or organization. An emerging approach for protecting identities of individuals while at the same time enhancing user convenience is to focus on inter-organization management of identity...

In this paper we highlight the need for privacy of user data used in digital identity management systems. We investigate the issues from the individual, business, and government perspectives. We provide surveys related to the growing problem of identity theft and the sociological concerns of...

Trust negotiation is a promising approach for establishing trust in open systems, in which sensitive interactions may often occur between entities with no prior knowledge of each other. Although, to date several trust negotiation systems have been proposed, none of them fully address the problem...

Identity federation systems enable participating organizations to provide services to qualified individuals and manage their identity attributes at an inter-organizational level. Most importantly, they empower individuals with control over the usage of their attributes within the federation via...