An intrusion-tolerant authorization and authentication scheme in distributed environments

Authors:
Guo Yuan-bo;Ma Jian-feng
Affiliations:
Xidian University, Xi'an, Shaanxi, China;Xidian University, Xi'an, Shaanxi, China
Venue:
ACM SIGOPS Operating Systems Review
Year:
2004

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Abstract

In this paper, we introduce an intrusion-tolerant authorization and authentication scheme in distributed environments, by the utilization of a secure multi-party computation scheme by virtue of Feldman's (t + 1, n) VSS to perform the warrant authorization. In this way, a warrant can be obtained in a distributed fashion in which any k of registration severs are required to perform the computation. The n segments of the private key of the registration severs set---which are spread across n registration severs---do not have to be recombined on a single machine to perform a warrant authorization. Since k , the requirement that only k segments are needed inherently provides system reliability.