Cryptology ePrint Archive: Report 2017/235
Efficient Oblivious Transfer from Lossy Threshold Homomorphic Encryption
Abstract: In this article, a new oblivious transfer (OT) protocol, secure
in the presence of erasure-free one-sided active adaptive adversaries
is presented. The new bit OT protocol achieves better communication
complexity than the existing bit OT protocol in this setting. The new bit OT protocol requires fewer number of public key encryption operations than the existing bit OT protocol in this setting. As a building block, a new two-party lossy threshold homomorphic public key cryptosystem is designed. It is secure in the same adversary model. It is of independent interest.
Category / Keywords: Oblivious transfer, Active adversary, One-sided adaptive adversary, Threshold encryption, Lossy encryption, Public key encryption, Homomorphic encryption
Original Publication (with major differences): AFRICACRYPT 2017 (Accepted)
Date: received 8 Mar 2017, last revised 12 Mar 2017
Contact author: inargis at ucalgary ca
Available format(s): PDF | BibTeX Citation
Note: The affiliation text corrected.
Version: 20170312:195259 (All versions of this report)
Short URL: ia.cr/2017/235
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