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Paper 2011/382

Generic Fully Simulatable Adaptive Oblivious Transfer

Kaoru Kurosawa and Ryo Nojima and Le Trieu Phong

Abstract

We aim at constructing adaptive oblivious transfer protocols, enjoying fully simulatable security, from various well-known assumptions such as DDH, $d$-Linear, QR, DCR, and LWE. To this end, we present two generic constructions of adaptive OT, one of which utilizes verifiable shuffles together with threshold decryption schemes, while the other uses permutation networks together with what we call {\em loosely-homomorphic} key encapsulation schemes. We then show that specific choices of the building blocks lead to concrete adaptive OT protocols with fully simulatable security in the standard model under the targeted assumptions. Our generic methods can be extended to build universally composable (UC) secure, and leakage-resilient OT protocols.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. Full version of a paper at ACNS 2011
Keywords
adaptive OTfully-simulatableverifiable shufflespermutation networksloose homomorphismleakage resilience
Contact author(s)
kurosawa @ mx ibaraki ac jp
ryo-no @ nict go jp
letrieu letrieuphong @ gmail com
History
2014-03-11: revised
2011-07-15: received
See all versions
Short URL
https://ia.cr/2011/382
License
Creative Commons Attribution
CC BY
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