A LWE-based Oblivious Transfer Protocol from Indistinguishability Obfuscation.

Yuan, Zheng Zheng, Wang +3 more

Zheng Yuan, Mei Wang, Feng Xiao

Mei Wang, Zheng Yuan, Feng Xiao

We proposed a new secure oblivious transfer protocol from indistinguishability obfuscation in this paper. Our main technical tool is the candidate indistinguishability obfuscation introduced in [1] and a dual-mode cryptosystem proposed in [2]. Following their steps, we presents a new k-out-of-l oblivious transfer protocol, its realization from DDH is described in this paper, in which we combined indistinguishability obfuscation with the dual-mode cryptosystem. The security of our scheme mainly relies on the indistinguishability of the obf-branches ( corresponding to the two modes in dual-mode model). Our paper explores a new way for the application of indistinguishability obfuscation.

Michael J. Fischer, Silvio M. Micali, Charles Rackoff

Hoeteck Wee, Daniel Wichs

We present a new, simple candidate construction of indistinguishability obfuscation (iO). Our scheme is inspired by lattices and learning-with-errors (LWE) techniques, but we are unable to prove security under a standard assumption. Instead, we formulate a new falsifiable assumption under which the scheme is secure. Furthermore, the scheme plausibly achieves post-quantum security.

Mehrad Jaberi, Hamid Mala