Quantum key distribution system, quantum key distribution method and device

Abstract

The invention discloses a quantum key distribution system, a quantum key distribution method and a quantum key distribution device. The system includes a quantum security key management device, quantum security key distribution devices and a quantum security key service device; the quantum security key management device is used for splitting a system private key into at least two system sub private keys according to a threshold key sharing mechanism and distributing the system sub private keys to the quantum security key distribution devices through a quantum key negotiation mode; the quantum security key service device is used for forwarding authorized private key acquisition requests to other quantum security key distribution devices; and the quantum security key distribution devices are used for acquiring identity-based authorized sub keys from the other quantum security key distribution devices through the quantum key negotiation mode and reconstructs an identity-based authorized private key through adopting the threshold key sharing mechanism. With the above system adopted, the risk that a classic password is cracked can be resisted, and the likelihood that an administrator maliciously leaks user data can be decreased.

Description

technical field [0001] This application relates to quantum key technology, in particular to a quantum key distribution system. The present application also relates to a quantum key distribution method and a quantum key distribution device. Background technique [0002] With the development of computer and network technologies, systems that provide users with various services have emerged, for example, cloud computing systems that provide users with various services such as applications, data, and IT resources. In such a system, in order to ensure the security of the static data stored inside the system and the dynamic data generated during the process of providing services to users, it is usually necessary to use an encryption algorithm to encrypt the data. For example, in a cloud computing environment, there are two data encryption modes: an encryption mode based on certificate authentication, or an encryption mode using a cloud computing key management system. [0003] A...

AI Technical Summary

Problems solved by technology

[0007] This application provides a quantum key distribution system to solve the problems of low security in the existing key management method, inability to restore the key, and easy leakage of user data in the centralized management method

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