标题： 基于量子纠缠的访问控制威胁 显示英文标题

标题： Access Control Threatened by Quantum Entanglement

摘要： 访问控制是计算机安全的基石，它防止对资源的未经授权的访问。 在本文中，我们研究量子计算机系统中的访问控制。 我们提出了一个首次明确的安全泄露场景，当一个经典安全的访问控制系统被直接适应到量子环境时会发生这种情况。 这种泄露最终是由于量子力学允许纠缠现象，并违反了梅尔明不等式，这是著名的贝尔不等式的多方变体。 这揭示了如果现有计算机系统与量子计算集成，量子纠缠可能对访问控制构成威胁。 为了防范这种威胁，我们提出了几种新的量子访问控制模型，并严格分析了它们的安全性、灵活性和效率。 显示英文摘要

摘要： Access control is a cornerstone of computer security that prevents unauthorised access to resources. In this paper, we study access control in quantum computer systems. We present the first explicit scenario of a security breach when a classically secure access control system is straightforwardly adapted to the quantum setting. The breach is ultimately due to that quantum mechanics allows the phenomenon of entanglement and violates Mermin inequality, a multi-party variant of the celebrated Bell inequality. This reveals a threat from quantum entanglement to access control if existing computer systems integrate with quantum computing. To protect against such threat, we propose several new models of quantum access control, and rigorously analyse their security, flexibility and efficiency.