| Chaum, D. (1985). Security without identiøcation: Transaction systems to make big brother obsolete. Communications of the ACM 28(10), pages 10301044. |
....with the supplier beforehand. The latter forbids deployment of merely identity based identi cation approaches as traditionally used in federated database systems. 3 Secure mediated querying protocol A secure mediation environment is based on a public key infrastructure and digital credentials [11, 28, 17]. In this environment clients have to provide evidence that they are eligible for requested information, and sources have to maintain mechanisms to inspect such evidence and to decide whether and which information is delivered. We assume that there are trusted third parties (TTPs) trusted by all ....
David Chaum. Security without identiøcation: Transaction systems to make big brother obsolete. Communications of the ACM, 28(10):10301044, October 1985.
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Chaum, D. (1985). Security without identiøcation: Transaction systems to make big brother obsolete. Communications of the ACM 28(10), pages 10301044.
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