International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Tomasz Kazana

Publications

Year
Venue
Title
2018
TCC
Continuous NMC Secure Against Permutations and Overwrites, with Applications to CCA Secure Commitments
Non-Malleable Codes (NMC) were introduced by Dziembowski, Pietrzak and Wichs in ICS 2010 as a relaxation of error correcting codes and error detecting codes. Faust, Mukherjee, Nielsen, and Venturi in TCC 2014 introduced an even stronger notion of non-malleable codes called continuous non-malleable codes where security is achieved against continuous tampering of a single codeword without re-encoding.We construct information theoretically secure CNMC resilient to bit permutations and overwrites, this is the first Continuous NMC constructed outside of the split-state model.In this work we also study relations between the CNMC and parallel CCA commitments. We show that the CNMC can be used to bootstrap a Self-destruct parallel CCA bit commitment to a Self-destruct parallel CCA string commitment, where Self-destruct parallel CCA is a weak form of parallel CCA security. Then we can get rid of the Self-destruct limitation obtaining a parallel CCA commitment, requiring only one-way functions.
2017
TCC
2015
EPRINT
2015
EPRINT
2015
EPRINT
2015
TCC
2013
CRYPTO
2011
TCC
2011
CRYPTO