Identity anti-counterfeiting system based on quantum key and application thereof

Abstract

The invention discloses an identity anti-counterfeiting system based on a quantum secret key and application thereof. The system comprises a main server S0, the server is in signal connection with n sub-servers Si (i belongs to 1, 2,..., n), each sub-server is provided with m (m > n) clients Cij (i belongs to 1, 2,..., n, j belongs to 1, 2,..., m), the main server S0 and the sub-servers Si share K entangled state particle pair sequences P, and the K entangled state particle pairs T are shared between the sub-server Si and the client Cij. According to the method, the lower level sends one particle in the EPR entanglement pair to the upper level, the other particle is reserved, an eavesdropper cannot obtain information of the whole EPR entanglement pair from one particle, during user authentication, a counterfeit client cannot know a secret key string between clients, particle measurement cannot be carried out according to a measurement base corresponding to a shared string, and therefore, the anti-counterfeiting effect is achieved.

Description

technical field [0001] The invention relates to the field of quantum communication, in particular to an identity anti-counterfeiting system based on a quantum secret key and its application. Background technique [0002] Quantum cryptography is based on quantum computing and is an emerging subject combining quantum mechanics and cryptographic communication. At present, the study of quantum cryptography has aroused widespread interest, and important progress has been made in both theory and practice. Quantum key sharing is an important direction of quantum cryptography research. Using the properties of Bell entangled states, the characteristics of quantum error correction codes, and the properties of continuous variable qubits and other quantum properties, people have designed a series of quantum key sharing schemes. [0003] In the distribution of quantum keys, non-orthogonal qubits have quantum properties that cannot be accurately measured at the same time. Although this p...

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Problems solved by technology

[0003] In the distribution of quantum keys, non-orthogonal qubits have quantum properties that cannot be accurately measured at the same time. Although this property has the ability to actively detect eavesdroppers and interference, it cannot detect counterfeiting behaviors between the two communicating parties.

Therefore, it is possible that all communication information is intercepted by attackers, resulting in insecure communication

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