Cryptology ePrint Archive: Report 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.

Category / Keywords: public-key cryptography / public-key cryptography, perfect secrecy, information theory, impossibility, cryptanalysis

Date: received 19 Oct 2019

Contact author: lorenz at yx7 cc

Available format(s): PDF | BibTeX Citation

Version: 20191021:082318 (All versions of this report)

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