NDLI: Adaptive Hardness and Composable Security in the Plain Model from Standard Assumptions

Content Provider	IEEE Xplore Digital Library
Author	Canetti, R. Huijia Lin Pass, R.
Copyright Year	2010
Abstract	We construct the first general secure computation protocols that require no trusted infrastructure other than authenticated communication, and that satisfy a meaningful notion of security that is preserved under universal composition—{\em assuming only the existence of enhanced trapdoor permutations.} The notion of security fits within a generalization of the ``angel-based'' framework of Prabhakaran and Sahai (STOC'04) and implies super-polynomial time simulation security. Security notions of this kind are currently known to be realizable only under strong and specific hardness assumptions. A key element in our construction is a commitment scheme that satisfies a new and strong notion of security. The notion, security against chosen-commitment-attacks (CCA security), means that security holds even if the attacker has access to a {\em extraction oracle} that gives the adversary decommitment information to commitments of the adversary's choice. This notion is stronger than concurrent non-malleability and is of independent interest. We construct CCA-secure commitments based on standard one-way functions, and with no trusted set-up. To the best of our knowledge, this provides the first construction of a natural cryptographic primitive requiring \emph{adaptive hardness} from standard hardness assumptions, using no trusted set-up or public keys.
Starting Page	541
Ending Page	550
File Size	525158
Page Count	10
File Format	PDF
ISBN	9781424485253
ISSN	02725428
DOI	10.1109/FOCS.2010.86
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Security Protocols Receivers Robustness Computational modeling Context Data mining composable security cryptography adaptive hardness secure multi-party computation
Content Type	Text
Resource Type	Article

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