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Erschienen in:
2005 | OriginalPaper | Buchkapitel
A Grid Authentication System with Revocation Guarantees
verfasst von : Babu Sundaram, Barbara M. Chapman
Erschienen in: High Performance Computing – HiPC 2005
Verlag: Springer Berlin Heidelberg
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Credential revocation is a critical problem in grid environments and remains unaddressed in existing grid security solutions. We present a novel grid authentication system that solves the revocation problem. It guarantees instantaneous revocation of both long-term digital identities of hosts/users and short-lived identities of user proxies. With our approach, revocation information is guaranteed to be fresh with high time-granularity. Our system employs
mediated RSA
(mRSA), adapts Boneh’s notion of
semi-trusted mediators
to suit security in virtual organizations and propagates proxy revocation information as in Micali’s
NOVOMODO
system. Our approach’s added benefits include a configuration-free security model for end-users of the grid and fine-grained management of users’ delegation capabilities.