Guess what?!  On the impossibility of unconditionally secure public-key encryption

Lorenz Panny

Paper 2019/1228

Guess what?! On the impossibility of unconditionally secure public-key encryption

Lorenz Panny

Abstract

We (once again) refute recurring claims about a public-key encryption scheme that allegedly provides unconditional security. This is approached from two angles: We give an information-theoretic proof of impossibility, as well as a concrete attack breaking the proposed scheme in essentially no time.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint. MINOR revision.
Keywords: public-key cryptography perfect secrecy information theory impossibility cryptanalysis
Contact author(s): lorenz @ yx7 cc
History: 2019-10-21: received
Short URL: https://ia.cr/2019/1228
License: CC BY

BibTeX

@misc{cryptoeprint:2019/1228,
      author = {Lorenz Panny},
      title = {Guess what?!  On the impossibility of unconditionally secure public-key encryption},
      howpublished = {Cryptology ePrint Archive, Paper 2019/1228},
      year = {2019},
      note = {\url{https://eprint.iacr.org/2019/1228}},
      url = {https://eprint.iacr.org/2019/1228}
}