Quantum protocols for transference of proof of zero-knowledge systems

TL;DR

This paper introduces two quantum protocols for transferring zero-knowledge proofs, challenging the assumption of proof transfer impossibility in classical zero-knowledge systems, with one protocol based on teleportation and another without entanglement.

Contribution

It presents two novel quantum protocols for proof transference, expanding the understanding of zero-knowledge systems under quantum correlations.

Findings

Quantum correlations can compromise zero-knowledge proof secrecy.

First protocol utilizes quantum teleportation for proof transfer.

Second protocol achieves proof transfer without entanglement.

Abstract

Zero-knowledge proof system is an important protocol that can be used as a basic block for construction of other more complex cryptographic protocols. An intrinsic characteristic of a zero-knowledge systems is the assumption that is impossible for the verifier to show to a third part that he has interacted with the prover. However, it has been shown that using quantum correlations the impossibility of transferring proofs can be successfully attacked. In this work we show two new protocols for proof transference, being the first one based on teleportation and the second one without using entangled states.