# Enhancing quantum audio watermarking security through joint verification and certification

## TL;DR

This paper introduces a new quantum audio watermarking method that improves security and robustness using joint verification and certification.

## Contribution

The novel dual-security mechanism combines joint verification and certification with quantum error correction for enhanced watermarking.

## Key findings

- The watermark remains imperceptible with SNR > 46 dB at higher embedding rates.
- Average BER is reduced by 62.5% compared to existing methods at a qubit error probability of 0.10.

## Abstract

Current quantum audio watermarking schemes prioritize robustness but often overlook critical security vulnerabilities, leaving systems exposed to impersonation and unauthorized use. To address this gap, we propose a dual-security mechanism that synergistically integrates joint verification and certification of watermarks, inspired by the paging seal principle. Our framework incorporates Quantum Error Correction (QEC) coding to enhance resilience against qubit errors and malicious tampering. Experimental results show improved performance: the watermark maintains high imperceptible with SNR> 46 dB under increased embedding rates, and achieves a 62.5% reduction in average BER compared to several state-of-the-art methods at a qubit error probability of 0.10. These results suggest that the proposed approach offers enhanced security and robustness, representing a promising direction for secure quantum audio watermarking.