Two-way interference type identity verification system based on photorefractive crystal PUF

A technology of photorefractive crystals and identity verification, applied in user identity/authority verification, transmission systems, digital transmission systems, etc., can solve problems such as poor security and low anti-deciphering degree, increase influence and reduce working pumping threshold , the effect of enhancing the ability of local light

Active Publication Date: 2021-10-22
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of poor security or low deciphering resistance existing in the existing optical PUF identity verification system, the present invention provides a two-way interference type identity verification system based on photorefractive crystal PUF

Method used

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  • Two-way interference type identity verification system based on photorefractive crystal PUF
  • Two-way interference type identity verification system based on photorefractive crystal PUF
  • Two-way interference type identity verification system based on photorefractive crystal PUF

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Embodiment 1

[0052]A two-way interference authentication system based on photorefractive crystal PUF. The user carries the optical PUF module and performs authentication in the security system. It includes two working stages, namely the registration stage and the authentication stage, which are realized through the following steps:

[0053] 1) Registration stage:

[0054] ① Light source 1 is used as a pump light source, using a vertically polarized laser with a wavelength of 632.8nm to generate a P-polarized Gaussian beam with a beam intensity of 2w;

[0055] ②The beam expands and collimates through the beam expander and collimator system PBES2, and the polarization state of the beam is not affected during the process;

[0056] ③ After beam expansion, collimation and exit beam with a certain width, it is irradiated on the spatial modulator SLM3, and the phase of the beam is affected by the modulation information matrix, which changes the light intensity distribution and generates excitatio...

Embodiment 2

[0069] A two-way interference authentication system based on photorefractive crystal PUF. The optical PUF module in the system is fixed, and the user carries a plaintext pattern to authenticate in the security system. It includes two working stages, namely the registration stage and the authentication stage. This is achieved through the following steps:

[0070] 1) Registration stage:

[0071] ① Light source 1 is used as a pump light source, using a vertically polarized laser with a wavelength of 632.8nm to generate a P-polarized Gaussian beam with a beam intensity of 2w;

[0072] ②The beam expands and collimates through the beam expander and collimator system PBES2, and the polarization state of the beam is not affected during the process;

[0073] ③ After beam expansion, collimation, and a certain width of the outgoing beam, it is irradiated on the spatial modulator SLM3, and the phase of the beam is affected by the modulation information matrix, which changes the light int...

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Abstract

The invention discloses a two-way interference type identity authentication system based on a photorefractive crystal PUF, and relates to the field of information security and identity authentication. The system comprises a light intensity modulation module, a polarization beam splitting module, an optical PUF module and a light beam lens module which are sequentially arranged from left to right, and also comprises a data processing module, wherein the light intensity modulation module comprises a light source, a beam expanding collimation system (PBES) and a spatial modulator (SLM); the polarization beam splitting module comprises a polarization beam splitting prism (PBS); the optical PUF module is composed of two glass plates and zirconium-iron double-doped lithium niobate LiNbO3Fe, Zr granular crystals; the light beam lens module comprises a positive lens I, a 1/4 lambda wave plate and a reflector group; the reflector group is composed of a positive lens II and a concave mirror; and the data processing module comprises a CCD camera and a computer; the CCD camera is connected to a computer through a serial data port; and the computer includes an extraction program. According to the invention, the identity verification system has higher security and decoding resistance.

Description

technical field [0001] The invention relates to the fields of information security and identity verification, and specifically relates to a two-way interference type identity verification system based on a photorefractive crystal PUF. The photorefractive crystal PUF is used to realize identity verification, and its security is significantly improved. Background technique [0002] With the development of technology and networks, security systems for "personal identity" verification have become popular in people's lives. However, the security issues of identity verification still plague us, such as: the system is deciphered, the token is cloned, and the identity information is tampered with. Therefore, it is very important to study new authentication methods and tools. [0003] Physical Unclonable Functions (Physical Unclonable Functions, PUF) is a physical entity that introduces randomness in the manufacturing process. Due to its random physical differences have natural char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04B10/54G02B27/00
CPCH04L9/3278H04B10/54G02B27/00
Inventor 王安帮王晨常朋发郭园园赵彤王龙生贾志伟
Owner TAIYUAN UNIV OF TECH
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