Practical two-party computation based on the conditional gate

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Abstract

We present new results in the framework of secure multiparty computation based on homomorphic threshold cryptosystems. We introduce the conditional gate as a special type of multiplication gate that can be realized in a surprisingly simple and efficient way using just standard homomorphic threshold ElGamal encryption. As addition gates are essentially for free, the conditional gate not only allows for building a circuit for any function, but actually yields efficient circuits for a wide range of tasks.
Original languageEnglish
Title of host publicationAdvances in Cryptology - ASIACRYPT 2004 (Proceedings 10th International Conference on the Theory and Application of Cryptology and Information Security, Jeju Island, Korea, December 5-9, 2004)
EditorsP.J. Lee
Place of PublicationBerlin
PublisherSpringer
Pages119-136
ISBN (Print)3-540-23975-8
DOIs
Publication statusPublished - 2004

Publication series

NameLecture Notes in Computer Science
Volume3329
ISSN (Print)0302-9743

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