[Resource Topic] 2014/552: Efficient Record-Level Keyless Signatures for Audit Logs

Welcome to the resource topic for 2014/552

Title:
Efficient Record-Level Keyless Signatures for Audit Logs

Authors: Ahto Buldas, Ahto Truu, Risto Laanoja, Rainer Gerhards

Abstract:

We propose a log signing scheme that enables (a) verification of the integrity of the whole log, and (b) presentation of any record, along with a compact proof that the record has not been altered since the log was signed, without leaking any information about the contents of other records in the log. We give a formal proof of the security of the proposed scheme, discuss practical considerations, and provide an implementation case study.

ePrint: https://eprint.iacr.org/2014/552

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