Breaking and Fixing the Security Proof of Garbled Bloom Filters

  • Cédric Van RompayEmail author
  • Melek Önen
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10980)


We identify a flaw in the proof of security of Garbled Bloom Filters, a recent hash structure introduced by Dong et al. (ACM CCS 2013) that is used to design Private Set Intersection (PSI) protocols, a important family of protocols for secure cloud computing. We give counter-examples invalidating a claim that is central to the original proof and we show that variants of the GBF construction have the same issue in their security analysis. We then give a new proof of security that shows that Garbled Bloom Filters are secure nonetheless.


Garbled bloom filter Private set intersection Provable security 



We would like to thank the anonymous reviewers for valuable comments. This work was supported by the EU FP7 ERANET program under grant CHIST-ERA-2016 UPRISE-IOT.


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Copyright information

© IFIP International Federation for Information Processing 2018

Authors and Affiliations

  1. 1.EURECOMBiotFrance

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