失窃之后：从撤销到中和——量子克隆保管中的响应机制
After Theft: From Revocation to Neutralization in the Custody of Quantum Clones
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中文总结 AI 辅助
本文提出加密量子克隆可实现“中和”而非仅撤销的失窃后响应，通过耗尽解封机会使被盗克隆永久失效，并形式化其与经典机制的区别及时间威胁模型。
中文摘要 AI 辅助
加密量子克隆技术能够创建未知量子态的多个加密副本，同时仅允许一次有效的解密操作，且解密资源在此过程中被内在消耗。本文认为，这一特性为受损后响应提供了一种独特的保管安全原语。我们考虑一种威胁模型，其中攻击者窃取了加密的量子克隆，但尚未拥有相应的解密密钥。在此类场景中，合法保管者可以解封另一个受信任的克隆，从而耗尽唯一可用的解封机会，使被窃取的克隆永久失效。我们认为，这一机制不能简单地描述为撤销，而是实现了一种更强的失窃后响应形式，我们称之为“中和”。我们形式化了这一区别，将其置于更广泛的失窃后响应空间中，并引入了一个时间威胁模型。我们将该机制与其最接近的经典类比进行比较，表明经典情形只能通过外部程序组合来复现该策略结果。最后，我们将加密量子克隆解释为分布式保存环境中受损后量子保管的原语，并对面向数字人文的保护架构具有潜在的相关性。
英文摘要
Encrypted quantum cloning enables the creation of multiple encrypted clones of an unknown quantum state while allowing only one effective decryption, with the decryption resource being intrinsically consumed in the process. In this paper, we argue that this property supports a distinctive custodial security primitive for post-compromise response. We consider a threat model in which an adversary steals an encrypted quantum clone but does not yet possess the corresponding decryption key. In such a scenario, a legitimate custodian may unseal a different trusted clone, thereby exhausting the sole available unsealing opportunity and rendering the stolen clone permanently useless. We argue that this mechanism is not adequately described as mere revocation. Rather, it realizes a stronger form of post-theft response, which we call neutralization. We formalize this distinction, locate it within a broader post-theft response space, and introduce a temporal threat model. We compare the mechanism with its closest classical analogue, showing that the classical case can reproduce the policy outcome only through external procedural composition. We finally interpret encrypted quantum cloning as a primitive for post-compromise quantum custody in distributed preservation settings, with prospective relevance for Cyber-Humanities-oriented preservation architectures.
发表机构
- University of Milano-Bicocca（米兰比可卡大学）
- Università Cattolica del Sacro Cuore（天主教撒雷学院）
- Khalifa University of Science and Technology（哈利法科学与技术大学）
- University of Milan（米兰大学）
机构由 AI 辅助整理，请以论文原文为准。
