Cryptology ePrint Archive: Report 2010/327
Efficiency-Improved Fully Simulatable Adaptive OT under the DDH Assumption
Kaoru Kurosawa and Ryo Nojima and Le Trieu Phong
Abstract: At Asiacrypt 2009, Kurosawa and Nojima showed a fully simulatable adaptive oblivious transfer (OT) protocol under the DDH assumption in the standard model. However, Green and Hohenberger pointed out
that the communication cost of each transfer phase is O(n), where n is the number of the sender's messages. In this paper, we show that the cost can be reduced to O(1) by utilizing a verifiable shuffle protocol.
Category / Keywords: cryptographic protocols / Adaptive OT, verifiable shuffles, DDH, standard model
Publication Info: To appear in SCN 2010. This is the full version.
Date: received 2 Jun 2010
Contact author: ryo-no at nict go jp
Available formats: PDF | BibTeX Citation
Version: 20100604:104302 (All versions of this report)
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