Continuous variable quantum secret sharing implementation method capable of autonomously selecting users, electronic equipment and computer readable storage medium

Abstract

The invention discloses a continuous variable quantum secret sharing implementation method capable of autonomously selecting users, electronic equipment and a computer readable storage medium. The method comprises the steps: 1, enabling each participant to generate a dual-mode entangled state, carrying out the projection measurement of a mode A in the dual-mode entangled state, and transmitting a mode B to a data distributor to form original data; step 2, the data distributor selects legal participants from all participants, sorts the legal participants, calculates a regular part when each legal participant is a unique honest participant, and splits the initial secret information according to the regular part; 3, the data distributor sends the sub-secret information to each legal participant according to the sequence, and each legal participant processes the sub-secret information to obtain unique sub-secret information; 4, all the legal participants cooperate with one another to recover the initial secret information; according to the invention, the data distributor can autonomously select part of participants for communication, and the communication safety is improved.

Description

technical field [0001] The invention belongs to the technical field of quantum secret sharing, and relates to a continuous variable quantum secret sharing realization method capable of independently selecting users, electronic equipment and a computer-readable storage medium. Background technique [0002] With the increasing development of scientific information technology, information resources occupy an important strategic position, and the confidentiality and security of information data transmission are getting more and more attention. The importance of information security to individuals, society and even the country is self-evident. Cryptography is a common method to ensure secure communication. Quantum cryptography has become an important research field in the branch of cryptography because it can realize unconditional information exchange. [0003] The quantum secret sharing protocol is a kind of protocol that uses the knowledge of quantum cryptography to solve the p...

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Problems solved by technology

[0003] Quantum secret sharing protocol is a kind of protocol that uses the knowledge of quantum cryptography to solve the problem of secret sharing. It is one of the main research directions of quantum cryptography. Due to the quantum non-cloning principle and the uncertainty principle, quantum cryptography can realize unconditional information interaction. Compared with traditional encryption, it has higher security; with the increasing number of quantum communication network users, the development of more concise, efficient, multi-user participation quantum communication network architecture and network communication protocols has gradually become a research hotspot, secret sharing is the solution An important technology for key management and multi-party communication, which splits the secret into several sub-secrets in an appropriate form, and the message sender sends the split sub-secrets to the participants arbitrarily, and each participant manages its own sub-secrets independently, only The secret information can only be recovered by the joint cooperation of a certain number of participants, and neither illegal participants nor legal participants less than the specified number can obtain the secret information

[0004] Quantum secret sharing protocols are divided into discrete variable quantum secret sharing protocols and continuous variable quantum secret sharing protocols. Although the discrete variable quantum secret sharing protocol was developed earlier, the information carrier—discrete variable—has the following limitations: 1. It is difficult to prepare. Some discrete variable quantum secret sharing protocols cannot directly obtain single photons in experiments, and can only use weak laser pulses instead of single photons, but the probability of their generation is extremely low; 2. The cost is high and the detection is difficult. Silicon avalanche diodes are used to detect optical fibers In the communication band, the detection efficiency is not high; 3. A large amount of invalid data will be generated, resulting in low communication efficiency; although the continuous variable quantum secret sharing protocol is developed late, its information carrier—continuous variable can effectively overcome the shortcomings of discrete variables. make it more widely used

[0005] Continuous variable quantum state carriers include squeezed state, entangled state, and coherent state. Among them, coherent state is relatively mature in laboratory preparation technology and has low production cost. It encrypts information on the regular component of quantum state and uses high-efficiency homodyne detection or heterodyne detection, the detection method is simple and efficient; however, in the continuous variable quantum secret sharing protocol, each participant has the ability to participate in the recovery of secret information indiscriminately, which cannot satisfy the multi-party communication of specific members in a large group. The use requirements of multiple tasks, and most of the existing continuous variable quantum secret sharing protocols are based on compressed states and entangled states, and the cost of use is relatively high

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