Security Enhancement of Quantum Noise Stream Cipher Based on Probabilistic Constellation Shaping. (arXiv:2305.09152v1 [cs.CR])

We propose a QNSC pre-coding scheme based on probabilistic shaping of the
basis, to reduce the probability of ciphertext bits that are easier to be
intercepted. Experiment results show this scheme can improve the security
performance by 100% in terms of Eve's cipher text BER.

bits cipher ciphertext coding eve noise performance quantum results security stream stream cipher terms text