Sciweavers

38
Voted
WPES
2003
ACM

Anonymous credentials with biometrically-enforced non-transferability

14 years 5 months ago
Anonymous credentials with biometrically-enforced non-transferability
We present a model and protocol for anonymous credentials. Rather than using deterrents to ensure non-transferability, our model uses secure hardware with biometric authentication capabilities. Using the model combining biometric authentication with anonymous credentials in the wallet-with-observer architecture proposed by Bleumer [4], we formalize the requirements of an anonymous credential protocol. In doing so, we define what it means for a protocol to be strongly subliminalfree, and show that any protocol meeting this new definition can be used in a non-transferable anonymous credential system. Our new definition improves upon subliminal-freeness as used by Burmester et al [10], in that we restrict information flow among parties even when one party detects that others in the protocol are dishonest. We describe a new protocol which is strongly subliminalfree. We then extend this basic model in a modular way to include the additional feature that the issuing authority may revoke...
Russell Impagliazzo, Sara Miner More
Added 05 Jul 2010
Updated 05 Jul 2010
Type Conference
Year 2003
Where WPES
Authors Russell Impagliazzo, Sara Miner More
Comments (0)