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Paper 2005/162

A Provably Secure and Efficient Verifiable Shuffle based on a Variant of the Paillier Cryptosystem

Lan Nguyen and Rei Safavi-Naini and Kaoru Kurosawa

Abstract

We propose a variant of the Paillier cryptosystem that improves efficiency in encryption, re-encryption and decryption while preserving the homomorphic property. We then use this variant to construct a new verifiable shuffle system and prove its security. We show that the new shuffle scheme has the least number of rounds and exponentiations compared to all known shuffle schemes. Finally, we show how to construct a publicly verifiable mix-net using the shuffle system.

Metadata
Available format(s)
PDF PS
Category
Public-key cryptography
Publication info
Published elsewhere. In Journal of Universal Computer Science
Keywords
privacyverifiable shufflesmix-netsPaillier
Contact author(s)
ldn01 @ uow edu au
History
2005-06-27: revised
2005-06-04: received
See all versions
Short URL
https://ia.cr/2005/162
License
Creative Commons Attribution
CC BY
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