Inception Makes Non-malleable Codes Stronger

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  • Divesh Aggarwal, National University of Singapore
  • ,
  • Tomasz Kazana, University of Warsaw
  • ,
  • Maciej Obremski

Non-malleable codes (NMCs), introduced by Dziembowski et al. [DPW10], provide a useful message integrity guarantee in situations where traditional error-correction (and even error-detection) is impossible; for example, when the attacker can completely overwrite the encoded message. NMCs have emerged as a fundamental object at the intersection of coding theory and cryptography. A large body of the recent work has focused on various constructions of non-malleable codes in the split-state model. Many variants of NMCs have been introduced in the literature i.e. strong NMCs, super strong NMCs and continuous NMCs. Perhaps the most useful notion among these is that of continuous non-malleable codes, that allows for continuous tampering by the adversary. In this paper we give the first efficient, information-theoretic secure construction of continuous non-malleable codes in the split-state model. Enroute to our main result, we obtain constructions for almost all possible notions of non-malleable codes that have been considered in the split-state model, and for which such a construction is possible. Our result is obtained by a series of black-box reductions starting from the non-malleable codes from [ADL14]. One of the main technical ingredient of our result is a new concept that we call inception coding. We believe it may be of independent interest. Also our construction is used as a building block for non-persistent (resettable) continuous non-malleable codes in constant split-state model in [DNO16].

Original languageEnglish
Title of host publicationTheory of Cryptography - 15th International Conference, TCC 2017, Proceedings
EditorsYael Kalai, Leonid Reyzin
Number of pages25
PublisherSpringer VS
Publication year1 Jan 2017
ISBN (print)978-3-319-70502-6
Publication statusPublished - 1 Jan 2017
EventFifteenth IACR Theory of Cryptography Conference - TCC 2017 - Baltimore, United States
Duration: 12 Nov 201715 Nov 2017
Conference number: 15


ConferenceFifteenth IACR Theory of Cryptography Conference - TCC 2017
LandUnited States
SeriesLecture Notes in Computer Science

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