Cryptanalysis and Improvement of a k-out-of-n Oblivious Transfer Protocol

Qinglong Wang Jintai Ding CPS Lab, Chongqing University, Chongqing, China; Department of Mathematics, University of Cincinnati, Cincinnati, OH 45220, USA

TBD mathscidoc:2207.43069

Cryptologia, 38, (4), 370-376, 2014.8
In this article, the authors cryptanalyze a k-out-of-n oblivious transfer protocol proposed in [12]. Their protocol is one of the most efficient k-out-of-n oblivious transfer protocols and is directly built from a 1-out-of-n oblivious transfer protocol. However, their analysis shows that the proposed k-out-of-n oblivious transfer protocol is insecure, though the primitive 1-out-of-n oblivious transfer protocol is secure. The weakness is that with high probability the receiver in their protocol can get all n secret messages encrypted by the sender. Finally, they fix the serious flaw and introduce an improved k-out-of-n oblivious transfer protocol without increasing any cost.
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  title={Cryptanalysis and Improvement of a k-out-of-n Oblivious Transfer Protocol},
  author={Qinglong Wang, and Jintai Ding},
Qinglong Wang, and Jintai Ding. Cryptanalysis and Improvement of a k-out-of-n Oblivious Transfer Protocol. 2014. Vol. 38. In Cryptologia. pp.370-376.
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