Counterfactual Quantum Bit Commitment

TL;DR

This paper introduces a novel counterfactual quantum bit commitment protocol utilizing a comparison scheme, demonstrating its security against common attacks and its resilience to no-go theorem constraints with current technology.

Contribution

It presents the first counterfactual quantum bit commitment protocol based on a comparison scheme and provides a security analysis against various attack strategies.

Findings

Protocol is secure against intercept and intercept/resend attacks.

Proper security parameters are established for the protocol.

Current technology cannot break the protocol under no-go theorem constraints.

Abstract

We propose a framework of bit commitment protocol using a comparison scheme and present a compound comparison scheme based on counterfactual cryptography. Finally, we propose a counterfactual quantum bit commitment protocol. In security analysis, we give the proper security parameters for counterfactual quantum bit commitment and prove that intercept attack and intercept/resend attack are ineffective attack for our protocol. In addition, we explain that counterfactual quantum bit commitment protocol cannot be attacked with no-go theorem attack by current technology.