A blockchain-assisted privacy-preserving signature scheme using quantum teleportation for metaverse environment in Web 3.0

At the forefront of next-generation internet technology, the concept of the metaverse is gaining traction. It unifies the virtual and physical worlds into a single virtual realm and has the potential to revolutionize social networks, gaming, healthcare and education. Quantum teleportation, renowned for its ability to ensure secure and reliable communications, is set to transform interactions within this immersive digital realm. Nevertheless, the conventional cryptosystems that typically rely on mathematical complexity will no longer be dependable and secure with the advancement of quantum computing. Applied to blockchain architecture, existing post-quantum cryptography technologies, which raise the time complexity of the algorithm, will result in relatively low efficiency and substantial resource overhead. In contrast, quantum cryptography has the ability to improve blockchain’s security and efficiency. Moreover, the reliance on centralized authorities in current metaverse platforms highlights the need for decentralization to improve interoperability and security. Web 3.0 technologies offer a solution by enabling a decentralized metaverse ecosystem. Therefore, the proposed approach leverages quantum teleportation to achieve secure communication and the integration of quantum cryptography and Web 3.0 enhances the efficiency, security and realism of metaverse environments. Through rigorous safety and efficiency analysis, we demonstrate the protocol’s robustness and performance, ensuring adherence to fundamental security properties such as unforgeability, undeniability, verifiability, and traceability.