[1] [1] Gupta B B, Agrawal D P, Wang H X. Computer and Cyber Security: Principles, Algorithm, Applications, and Perspectives [M]. CRC Press, 2018.

[2] [2] Fok M P, Wang Z X, Deng Y H, et al. Optical layer security in fiber-optic networks [J]. IEEE Transactions on Information Forensics and Security, 2011, (3): 725-736.

[3] [3] Kitayama K I, Sasaki M, Araki S, et al. Security in photonic networks: Threats and security enhancement [J]. Journal of Lightwave Technology, 2011, 29(21): 3210-3222.

[4] [4] Shi H Q, Pu T, Zheng J L, et al. Research on key expansion module of quantum noise random stream cipher [J]. Chinese Journal of Quantum Electronics, 2020, 37(2): 196-201.

[5] [5] Nair R, Yuen H P, Corndorf E, et al. Quantum-noise randomized ciphers [J]. Physical Review A, 2006, 74(5): 052309.

[6] [6] Shimizu T, Hirota O, Nagasako Y. Running key mapping in a quantum stream cipher by the Yuen 2000 protocol [J]. Physical Review A, 2008, 77(3): 034305.

[7] [7] Sohma M, Hirota O. Coherent pulse position modulation quantum cipher [C]. AIP Conference Proceedings. American Institute of Physics, 2014, 1633(1): 125-127.

[8] [8] Jiao H S, Pu T, Xiang P, et al. Physical-layer security analysis of PSK quantum-noise randomized cipher in optically amplified links [J]. Quantum Information Processing, 2017, 1(8): 1-16.

[9] [9] Jiao H S, Pu T, Zheng J L, et al. Physical-layer security analysis of a quantum-noise randomized cipher based on the wire-tap channel model [J]. Optics Express, 2017, 25(10): 10947-10960.

[10] [10] Zhang G R. The Research on Physical-Layer Security of OCDMA System Based on Information Theory [D]. Shenzhen: Shenzhen University, 2018.

[11] [11] Ji J H, Zhang G R, Li W J, et al. Performance analysis of physical-layer security in an OCDMA-based wiretap channel [J]. Journal of Optical Communications and Networking, 2017, 9(10): 813-818.

[12] [12] Ji J H, Zhang G R, Wang K, et al. Improvement of physical-layer security and reliability in coherent time-spreading OCDMA wiretap channel [J]. Optical and Quantum Electronics, 2018, 50(5): 215.1-215.11.

[13] [13] Tan Y T, Pu T, Zhou H, et al. Performance analysis of physical-layer security in ISK quantum-noise randomized cipher based on wiretap channel [J]. Optics Communications, 2020, 461: 125151.

[14] [14] Chen Y K, Jiao H S, Zhou H, et al. Security analysis of QAM quantum-noise randomized cipher system [J]. IEEE Photonics Journal, 2020, 12(4): 7904114.