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Cited by 458

The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.

Practical Covertly Secure MPC for Dishonest Majority – Or: Breaking the SPDZ Limits

Open access
Damgård, Ivan, Keller, Marcel, Larraia, Enrique, Pastro, Valerio, Scholl, Peter, Smart, Nigel P.·2013·Lecture Notes in Computer Science

Abstract

SPDZ (pronounced “Speedz”) is the nickname of the MPC protocol of Damgård et al. from Crypto 2012. In this paper we both resolve a number of open problems with SPDZ; and present several theoretical and practical improvements to the protocol. In detail, we start by designing and implementing a covertly secure key generation protocol for obtaining a BGV public key and a shared associated secret key. We then construct both a covertly and actively secure preprocessing phase, both of which compare favourably with previous work in terms of efficiency and provable security. We also build a new online phase, which solves a major problem of the SPDZ protocol: namely prior to this work preprocessed data could be used for only one function evaluation and then had to be recomputed from scratch for the next evaluation, while our online phase can support reactive functionalities. This improvement comes mainly from the fact that our construction does not require players to reveal the MAC keys to check correctness of MAC’d values. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Metadata

Authors
Damgård, I., Keller, M., Larraia, E., Pastro, V., Scholl, P., & Smart, N. P.
Venue
Lecture Notes in Computer Science
Published
2013
Pages
1-18
ISSN
  • 0302-9743 (ISSN-L)
  • 1611-3349
OpenAlex
W1635361314
Cited by
458
References
20
FWCI
20.38
Type
conference paper
Language
en
Open access
gold

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The paper
Damgård, I., Keller, M., Larraia, E., Pastro, V., Scholl, P., & Smart, N. P. (2013). Practical Covertly Secure MPC for Dishonest Majority – Or: Breaking the SPDZ Limits. Lecture Notes in Computer Science. https://doi.org/10.1007/978-3-642-40203-6_1

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