Oblivious Transfer Protocol with Verification

TL;DR

This paper introduces a variation of the Diffie-Hellman key exchange as an oblivious transfer protocol with a verification method to ensure correctness without revealing private random numbers.

Contribution

It proposes a novel variation of the DH key exchange for oblivious transfer and a verification method that maintains privacy of the random numbers.

Findings

Protocol effectively prevents cheating in oblivious transfer.

Verification method confirms correctness without exposing private data.

Enhances security in probabilistic event generation scenarios.

Abstract

Although random sequences can be used to generate probability events, they come with the risk of cheating in an unsupervised situation. In such cases, the oblivious transfer protocol may be used and this paper presents a variation to the DH key-exchange to serve as this protocol. A method to verify the correctness of the procedure, without revealing the random numbers used by the two parties, is also proposed.