After Quantum Keys are Distributed: Physical-Layer Encryption Aided by Optical Noise.

摘要

AlphaEta is a practical physical encryption system: ' Performance similar to standard systems:1dB performance reduction ' Uses off the shelf components ' Use best available traditional cryptographic algorithms ' Improved security via random noise / added complexity ' Known plain text attack low correlation statistical attack ' Lots of practical issues for Eve- How to phase- lock to a dense, noisy Mary ' Demonstrated Drop-in compatibility with all- optical fiber networks- 850km ' 2.5Gb/s data rates attainable now.