Optimal-Rate Non-Committing Encryption in a CRS Model

Abstract

Non-committing encryption (NCE) implements secure channels under adaptive corruptions in situations when data erasures are not trustworthy. In this paper we are interested in the rate of NCE, i.e. in how many bits the sender and receiver need to send per plaintext bit. In initial constructions (e.g. Canetti, Feige, Goldreich and Naor, STOC 96) the length of… (More)

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