High-speed physical random number generator based on chaos laser entropy source

A physical random and chaotic laser technology, applied in the field of information, can solve problems such as the inability to meet the requirements of high-speed secure communication network random number rate

Pending Publication Date: 2018-11-23
SOUTHWEST UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, the random digital rate generated by traditional physical entropy sources such as thermal noise in resistive devices and frequency jitter in oscilla

Method used

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  • High-speed physical random number generator based on chaos laser entropy source
  • High-speed physical random number generator based on chaos laser entropy source
  • High-speed physical random number generator based on chaos laser entropy source

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following technical solutions in the present invention are clearly and completely described. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] As we all know, VCSELs can simultaneously output two orthogonal polarization components under appropriate parameter conditions, and have the ability to simultaneously output two channels of chaotic entropy source signals. Therefore, chaotic entropy source devices based on VCSELs are more suitable for applications such as multi-channel random number generation. The scene has great potential to be tapped.

[0036] The invention provides a high-speed physical...

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Abstract

The invention provides a high-speed physical random number generator based on a chaos laser entropy source. The high-speed physical random number generator based on the chaos laser entropy source comprises an entropy source module and a post-processing module. The entropy source module is used for emitting two routes of broadband chaotic signals of which a time delay feature can be inhibited and abandwidth can be reinforced, and cross correlation between the two routes of the chaotic signals is lower. The post-processing module is used for, after converting the two routes of the chaotic signals into a digital signal, processing to obtain a high-speed random number finally. Compared with a pseudo random number generator, the generated random number has not periodicity, and the random number with a random length which cannot be regenerated can be generated. Compared with a traditional physical random number generator, an entropy source bandwidth is larger, and reaches up to tens of GHz.The high-speed physical random numbers with hundreds of Gbits/s of a code rate can be obtained.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a high-speed physical random number generator based on a chaotic laser entropy source. Background technique [0002] With the rapid development and wide application of network technology, human society has entered the information age. Information is both time and wealth, and an important strategic resource for national development. However, during the transmission process of the communication network, information may be subject to unauthorized access, tampering or destruction at any time, and must be protected. The core technology to ensure information security is cryptographic technology. In the field of cryptography, random numbers are used in both encryption technology, digital signatures, identity authentication, and various security protocols. Therefore, random numbers are the cornerstone of the field of cryptography, and the quality of random numbers determines the s...

Claims

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Application Information

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IPC IPC(8): G06F7/58G02B27/28
CPCG06F7/588G02B27/283
Inventor 唐曦吴正茂邓涛林晓东樊利高子叶夏光琼
Owner SOUTHWEST UNIVERSITY
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