On securing communication from profilers

Sandra Díaz-Santiago, Debrup Chakraborty

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A profiling adversary is an adversary which aims to classify messages into pre-defined profiles and thus gain useful information regarding the sender or receiver of such messages. Usual chosen-plaintext secure encryption schemes are capable of securing information from profilers, but these schemes provide more security than required for this purpose. In this paper we study the requirements for an encryption algorithm to be secure only against profilers and finally give a precise notion of security for such schemes. We also present a full protocol for secure (against profiling adversaries) communication, which neither requires a key exchange nor a public key infrastructure. Our protocol guarantees security against non-human profilers and is constructed using CAPTCHAs and secret sharing schemes.

Original languageEnglish
Title of host publicationSECRYPT 2012 - Proceedings of the International Conference on Security and Cryptography
Pages154-162
Number of pages9
StatePublished - 2012
Externally publishedYes
EventInternational Conference on Security and Cryptography, SECRYPT 2012 - Rome, Italy
Duration: 24 Jul 201227 Jul 2012

Publication series

NameSECRYPT 2012 - Proceedings of the International Conference on Security and Cryptography

Conference

ConferenceInternational Conference on Security and Cryptography, SECRYPT 2012
Country/TerritoryItaly
CityRome
Period24/07/1227/07/12

Keywords

  • CAPTCHA
  • Data encryption
  • Profiling adversary
  • Secret sharing
  • User profiling

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