Simultaneous Secrecy and Reliability Amplification for a General Channel Model

  • Russell Impagliazzo
  • Ragesh Jaiswal
  • Valentine Kabanets
  • Bruce M. Kapron
  • Valerie King
  • Stefano Tessaro
Conference paper

DOI: 10.1007/978-3-662-53641-4_10

Volume 9985 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Impagliazzo R., Jaiswal R., Kabanets V., Kapron B.M., King V., Tessaro S. (2016) Simultaneous Secrecy and Reliability Amplification for a General Channel Model. In: Hirt M., Smith A. (eds) Theory of Cryptography. TCC 2016. Lecture Notes in Computer Science, vol 9985. Springer, Berlin, Heidelberg

Abstract

We present a general notion of channel for cryptographic purposes, which can model either a (classical) physical channel or the consequences of a cryptographic protocol, or any hybrid. We consider simultaneous secrecy and reliability amplification for such channels. We show that simultaneous secrecy and reliability amplification is not possible for the most general model of channel, but, at least for some values of the parameters, it is possible for a restricted class of channels that still includes both standard information-theoretic channels and keyless cryptographic protocols.

Even in the restricted model, we require that for the original channel, the failure chance for the attacker must be a factor c more than that for the intended receiver. We show that for any \(c > 4 \), there is a one-way protocol (where the sender sends information to the receiver only) which achieves simultaneous secrecy and reliability. From results of Holenstein and Renner (CRYPTO’05), there are no such one-way protocols for \(c < 2\). On the other hand, we also show that for \(c > 1.5\), there are two-way protocols that achieve simultaneous secrecy and reliability.

We propose using similar models to address other questions in the theory of cryptography, such as using noisy channels for secret agreement, trade-offs between reliability and secrecy, and the equivalence of various notions of oblivious channels and secure computation.

Copyright information

© International Association for Cryptologic Research 2016

Authors and Affiliations

  • Russell Impagliazzo
    • 1
  • Ragesh Jaiswal
    • 2
  • Valentine Kabanets
    • 3
  • Bruce M. Kapron
    • 4
  • Valerie King
    • 4
  • Stefano Tessaro
    • 5
  1. 1.University of California, San DiegoSan DiegoUSA
  2. 2.Indian Institute of Technology DelhiNew DelhiIndia
  3. 3.Simon Fraser UniversityBurnabyCanada
  4. 4.University of VictoriaVictoriaCanada
  5. 5.University of California, Santa BarbaraSanta BarbaraUSA