Q-CryptChain: Next-Generation Quantum Cryptography Blockchain Security Framework for the Metaverse
Sandeep Ravikanti, Jay Dave, Hai Dong +3 more
The Metaverse integrates virtual reality, augmented reality, and decentralized economies, but its security foundations are increasingly threatened by quantum computing. Classical cryptography used in blockchain systems is vulnerable to quantum attacks, while existing blockchain-based frameworks lack quantum resistance. Quantum Key Distribution (QKD) offers provably secure communication, but has not been systematically applied to Metaverse security. To address this gap, we propose Q-CryptChain, a hybrid framework that combines QKD with blockchain to deliver quantum-safe confidentiality, tamper-proof integrity, and continuous authentication. We formalize the system and threat model, define explicit security properties, and present strengthened algorithms for handshake, transaction validation, and session monitoring. Q-CryptChain provides a future-proof security foundation for Metaverse ecosystems, enabling trustworthy interactions against emerging quantum-era threats.
IEEE Future Networks World Forum (FNWF)•Nov 10, 2025•1 citation