Authentication system based on single-photon excitation and optical PUF (Physical Unclonable Function)

Abstract

The invention provides an authentication system based on single-photon excitation and an optical PUF (Physical Unclonable Function). A method for implementing the system comprises the following steps: preparing a single-photon source by using a laser pulse attenuation method; performing high-speed encoding on incident light waves by using a high-speed DMD (Digital Micro-mirror Device); irradiating encoded light onto an optical PUF key constructed by a random medium to generate a speckle response; acquiring a speckle pattern by using an sCMOS (scientific Complementary Metal-Oxide-Semiconductor) camera, an EMCCD (Electron Multiplying Charge-Coupled Device) camera or an EBCCD (Electron-Bombarded Charge Coupled Device) camera; and registering and authenticating the PUF key by using speckle information. In the authentication system, the quantum nonclonability of a single photon and the non-repeatability of a random medium PUF key are utilized, so that the security of an authentication process is ensured physically. Ambient light is filtered by a narrowband bandpass filter, so that the influence of ambient light is lowered. The authentication system has a great application prospect in the field of security.

Description

technical field [0001] The invention relates to an identity authentication system, in particular to an authentication system based on single-photon excitation and optical PUF (Physically Unclonable Function), which belongs to the technical field of security authentication. Background technique [0002] The authentication system based on Physical Unclonable Function (PUF) has very good security and has broad application prospects in the next generation of security authentication technology. The earliest PUF-based authentication system is realized by using optical disordered media. It uses classical The speckle formed by laser irradiation on the disordered medium is used for authentication. The speckle can reflect the internal structural information of the disordered medium. Different disordered media can form completely different speckle patterns, so the speckle can be used as the mark of the disordered medium. Authentication; this optical PUF key composed of random media is ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing quantum authentication system, which are relatively slow and greatly affected by ambient light, the present invention provides an authentication system based on single photon excitation and optical PUF , the system not only has the security of other quantum authentication systems, but also can greatly increase the speed of the registration and authentication process, and reduce the impact of ambient light on the authentication system

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