Post-quantum attacks on key distribution schemes in the presence of weakly stochastic sources

[摘要] It has been established that the security of quantum key distribution protocols can be severely compromised were one to permit an eavesdropper to possess a very limited knowledge of the random sources used between the communicating parties. While such knowledge should always be expected in realistic experimental conditions, the result itself opened a new line of research to fully account for real-world weak randomness threats to quantum cryptography. Here we expand of this novel idea by describing a key distribution scheme that is provably secure against general attacks by a post-quantum adversary. We then discuss possible security consequences for such schemes under the assumption of weak randomness.

[发布机构] Department of Physics and Mathematics, Nottingham Trent University, Clifton Campus, Nottingham; NG11 8NS, United Kingdom^1

[效力级别] 数学

[关键词] Experimental conditions;Key distribution schemes;Post quantum;Provably secure;Quantum key distribution protocols;Random sources;Real-world;Weak randomness