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7th Annual IEEE Information Assurance Workshop 21-23 June 2006 "The West Point Workshop" United States Military Academy, West Point, New York |
| Chair: LTC Ronald Dodge, Ronald.Dodge@usma.edu | |
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Cascaded Authorization With Anonymous-Signer Aggregate SignaturesDanfeng Yao and Roberto TamassiaThe 7th IEEE Information Assurance Workshop (IAWorkshop 2006)West Point, New York, USA, June 21-23, 2006
AbstractWe introduce a decentralized trust management model called anonymous role-based cascaded delegation. In this model, a delegator can issue authorizations on behalf of her role without revealing her identity. This type of delegation protects the sensitive membership information of a delegator and hides the internal structure of an organization. To provide an efficient storage and transmission mechanism for credentials used in anonymous role-based cascaded delegation, we present a new signature scheme that supports both signer anonymity and signature aggregation. Our scheme has compact role signatures that make it especially suitable for ubiquitous computing environments, where users may have mobile computing devices with narrow communication bandwidth and small storage units.
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