论文标题
量子加密安全性索赔是空置的吗？
Are quantum cryptographic security claims vacuous?
论文作者
论文摘要
量子密码学中的一个核心主张是，基于相关信息处理系统遵守量子物理学定律的假设，可以严格证明保密性。伯恩斯坦（Arxiv：1803.04520）最近对此主张提出了质疑。他认为，物理定律也可能导致对物理载体编码的任何经典信息的不可避免的泄漏。量子密钥分布的安全性主张将是空置的，因为最终秘密密钥的计算将泄漏其价值。但是，正如我们在简短的说明中所解释的那样，伯恩斯坦的推理基于对物理学的“经典”理解。它遵循有关耐断层量子计算的已知定理，量子物理学避免了他的结论。
A central claim in quantum cryptography is that secrecy can be proved rigorously, based on the assumption that the relevant information-processing systems obey the laws of quantum physics. This claim has recently been challenged by Bernstein (arXiv:1803.04520). He argues that the laws of physics may also entail an unavoidable leakage of any classical information encoded in physical carriers. The security claim of quantum key distribution would then be vacuous, as the computation of the final secret key would leak its value. However, as we explain in this short note, Bernstein's reasoning is based on a too "classical" understanding of physics. It follows from known theorems about fault-tolerant quantum computation that quantum physics avoids his conclusion.
