Quantum secret communication system based on secret sharing and communication method thereof

Abstract

The invention discloses a quantum secret communication system based on secret sharing and a communication method thereof. The system comprises a plurality of user sides and a quantum communication service station, wherein the service station serves as an issuing service station or an access service station of the user side, the service station private key and the public keys of all service stations are stored in the service station secret key card, the user side private key and the issuing service station public key are stored in the user side secret key card, the ID of the user side carries the information of the issuing service station, the user side sends a login application to the issuing service station, and a dialogue secret key is generated in the login application process. According to the method provided by the invention, the user side is set to access the plurality of access service stations, the problem that identity authentication cannot be carried out due to limited maximum connection number is prevented, and the capability of providing key service of the network is improved; identity authentication is carried out by adopting encryption modes such as random numbers, offset and the like; the effectiveness and the non-repudiation of identity authentication are high.

Description

technical field [0001] The invention relates to the field of secret sharing, in particular to a quantum secret communication system based on secret sharing and a communication method thereof. Background technique [0002] Confidential communication is a communication method, which is to take special measures on the content of the information to be transmitted, so as to conceal the real content of the information, so that illegal interceptors cannot understand the meaning of the communication content. In order to conceal the communication content, usually before transmission, the information is transformed in various forms to form encrypted information, and the corresponding inverse transformation is performed at the receiving end to restore the original information. Security communication can be divided into analog security communication and digital security communication according to the encryption method of communication information. Digital security technology has been w...

AI Technical Summary

Problems solved by technology

However, once the QKD device is attacked by malware, or once the key card where it is located is cracked violently, the corresponding symmetric key pool in the QKD device may be stolen, thereby losing all key security;

[0008]2. When users apply for QKD keys, if the number of users is huge in a short period of time, due to the limited maximum number of connections for a single QKD device, it may be due to exceeding the maximum A single QKD device cannot provide key services due to the number of connections;

[0009]3. When users log in to QKD, they often use symmetric keys for identity authentication. Compared with asymmetric cryptography, the effectiveness of identity authentication and Low non-repudiation

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