Security

Privacy-Preserving PKIs With Reduced Server Trust

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Executive Summary

Motivated by vehicular networking applications, the authors study a novel type of privacy-preserving public-key infrastructures where the server that distributes public and private keys to clients need not be trusted by clients to protect its secret data against intruders. They target three main requirements for these public-key infrastructures: privacy preservation of the client's identity (or, anonymity), traceability of malicious messages to clients corrupted by an attacker rather than honest clients (or, traceability) and communication and computation time constant with respect to the number of users (or, efficiency).

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