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A multi-user quantum identity authentication method based on orbital angular momentum

An orbital angular momentum and identity authentication technology, applied in the field of network identity authentication, can solve the problems of increased difficulty and complicated process of network system authentication

Active Publication Date: 2021-04-13
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

At this time, the authentication difficulty of the network system will increase, and the process will become more complicated.

Method used

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  • A multi-user quantum identity authentication method based on orbital angular momentum
  • A multi-user quantum identity authentication method based on orbital angular momentum
  • A multi-user quantum identity authentication method based on orbital angular momentum

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Embodiment Construction

[0048] In 1992, Allen and other researchers proved that the amplitude function of the beam contains an azimuthal phase term, and the photons in the beam have a definite orbital angular momentum in propagation. The orbital angular momentum (OAM) of quantum light is a basic physical quantity of classical mechanics and quantum mechanics. It is related to the spatial distribution of the ray beam and is a natural characteristic of the helical phase ray beam. Different from spin angular momentum, the topological charge of orbital angular momentum can take any integer value from negative infinity to positive infinity, which greatly enriches the information loading capacity of a single photon. The spatial distribution functions of the orbital angular momentum of different topological charges are orthogonal to each other, which is more suitable for multiplexing and transmission of different information. Studies have shown that quantum orbital angular momentum has a new degree of freedo...

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Abstract

The invention discloses a multi-user quantum identity authentication method based on orbital angular momentum. Based on the multi-user quantum identity authentication of a distributed network system, the authentication preparation is performed first, and then the quantum users are grouped according to the azimuth angle of the orbital angular momentum in the authentication stage. The entanglement characteristics of orbital angular momentum are used to realize the remote state transfer of orbital angular momentum. Different nodes in the network share authentication encryption keys. The encryption keys shared by users and trusted centers and the authenticated user identities are all quantum state information. Authenticated users of the OAM-encoded distributed network. The use of quantum information improves the security of the authentication system, the use of orbital angular momentum improves the authentication efficiency of the system, and increases the number of users participating in the authentication under the same conditions. The research on security authentication in multi-user network has certain practical significance.

Description

【Technical field】 [0001] The invention belongs to the technical field of network identity authentication, and in particular relates to a multi-user quantum identity authentication method based on orbital angular momentum. 【Background technique】 [0002] As an important application technology of network information system, identity authentication protects system data and network services from being accessed by unauthorized users. The resource access control strategy based on user identity is the key to the security of network resources. The technology of verifying the user's identity by the computer network includes the user's key, the items carried by the user and the unique characteristics of the user. Quantum information guarantees the unconditional security of information by the uncertainty principle and the no-cloning theorem. The unique feature of using quantum information as a network user makes quantum identity authentication technology have absolute security that c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/085H04L9/0852H04L63/06H04L63/08
Inventor 董颖娣
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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