From Passive to Covert Security at Low Cost

  title={From Passive to Covert Security at Low Cost},
  author={Ivan Damg{\aa}rd and Martin Geisler and Jesper Buus Nielsen},
  journal={IACR Cryptology ePrint Archive},
Aumann and Lindell defined security against covert attacks, where the adversary is malicious, but is only caught cheating with a certain probability, where the idea is that in many real-world cases, a large probability of being caught is sufficient to prevent the adversary from trying to cheat. In this paper, we show how to compile a passively secure protocol for honest majority into one that is secure against covert attacks, again for honest majority and catches cheating with probability 1/4… CONTINUE READING
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From passive to covert security at low cost

  • I. Damg̊ard, M. Geisler, J. B. Nielsen
  • Cryptology ePrint Archive, Report 2009/592,
  • 2009
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