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2005
Springer

Relaxing Environmental Security: Monitored Functionalities and Client-Server Computation

10 years 2 months ago
Relaxing Environmental Security: Monitored Functionalities and Client-Server Computation
Definition of security under the framework of Environmental Security (a.k.a Network-Aware Security or Universally Composable Security) typically requires “extractability” of the private inputs of parties running a protocol. Formalizing concepts that appeared in an earlier work [19], we introduce a framework of “Monitored Functionalities,” which allows us to avoid such a requirement from the security definition, while still providing very strong composition properties. We also consider a specialization of the Environmental Security framework by designating one party as a “server” and all other parties as clients. Both these contributions in the work are aimed at being able to provide weaker Environmental Security guarantees to simpler protocols. We illustrate the usability of the Monitored Functionalities framework by providing much simpler protocols in the plain model than in [19] for some limited functionalities in the server-client model.
Manoj Prabhakaran, Amit Sahai
Added 28 Jun 2010
Updated 28 Jun 2010
Type Conference
Year 2005
Where TCC
Authors Manoj Prabhakaran, Amit Sahai
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