Lawrence Port

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Distributed Role-Based Access Control (dRBAC) is a scalable, decentralized trust-management and access-control mechanism for systems that span multiple administrative domains. dRBAC utilizes PKI identities to define trust domains, roles to define controlled activities, and role delegation across domains to represent permissions to these activities. The(More)
The growing popularity of network-based services and peer-to-peer networks has resulted in situations where components of a distributed application often need to execute in environments that are only partly trusted by the application's owner. Such deployment into partial or unstable trust environments exacerbates the classical problems of distributing(More)
Software development in distributed computation is complicated by the extra overhead of communication between connected, dispersed hosts in dynamically changing, multiple administrative domains. Many disparate technologies exist for trust management, authentication, secure communication channels , and service discovery, but composing all of these elements(More)
Distributed Role-Based Access Control (dRBAC) is a scalable, decentralized trust-management and access-control mechanism for systems that span multiple administrative domains. dRBAC represents controlled actions in terms of roles, which are defined within the trust domain of one entity and can be transitively delegated to other roles within a different(More)
Prolonged secure communication requires trust relationships that extend throughout a connection's life cycle. Current tools to establish secure connections such as SSL/TLS and SSH authenticate PKI identities, validate credentials and authorize a trust relationship at the time a connection is established, but do not monitor the trust relationship thereafter.(More)
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