Paper 2012/124

On Securing Communication From Profilers

Sandra Diaz-Santiago and Debrup Chakraborty

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.

Metadata
Available format(s)
PDF PS
Category
Secret-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
Data encryptionProfiling adversaryCAPTCHASecret sharing
Contact author(s)
sdiaz @ computacion cs cinvestav mx
History
2012-03-13: received
Short URL
https://ia.cr/2012/124
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2012/124,
      author = {Sandra Diaz-Santiago and Debrup Chakraborty},
      title = {On Securing Communication From Profilers},
      howpublished = {Cryptology ePrint Archive, Paper 2012/124},
      year = {2012},
      note = {\url{https://eprint.iacr.org/2012/124}},
      url = {https://eprint.iacr.org/2012/124}
}
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