A down-sampling multi-bit true random cipher optical generation device

Abstract

The invention relates to a down-sampling multi-bit true random password optical generation device, a mode-locked pulse laser outputs and loads to an all-optical switch control signal input end, continuous chaotic optical signals outputted by a laser chaos entropy source are inputted to a signal detection port of the all-optical switch, the all-optical switch completes the down-sampling of the chaotic optical signals, a chaotic optical pulse sequence is obtained, the idle noise of the chaotic optical pulse sequence is filtered through an optical band pass filter, and the chaotic optical pulse sequence is divided into two ways: one way is injected to a fast photodetector I through a fiber delay line and is inputted to the positive end of a mult-bit analog-to-digital converter, and the other way is inputted to a fast photodetector II and is loaded to the negative end of the mult-bit analog-to-digital converter, at last, all valid bit parallel output ports of the mult-bit analog-to-digital converter output a multi-channel high speed real-time true random password sequence. The real-time code rate can reach more than 100 Gbps, so that the present and future need of high speed secret network communication can be greatly met.

Description

technical field [0001] The invention relates to a true random cipher generating device, in particular to a down-sampled multi-bit true random cipher optical generating device, which is suitable for the fields of cryptography, information security and the like. Background technique [0002] Information network security is directly related to national security, commercial confidentiality, personal privacy and many other aspects. The exposure of the US "Prism Project" in 2013 revealed that the core secrets of other countries can be stolen with the help of communication network technology; at the same time, it also exposed the technical shortcomings of countries in the world in terms of information security products. [0003] Passwords are the last barrier to information security. At present, the algorithm-based pseudo-random password generation technology is widely used in the world to manufacture high-speed pseudo-random password equipment. But as the name suggests, it is ps...

AI Technical Summary

Problems solved by technology

[0007] The specific technical problem to be solved by the present invention is the problem of insufficient real-time code rate in existing true random ciphers, and provides a down-sampled multi-bit true random cipher optical generation device

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