Quantum security key service method and system

Abstract

The invention provides a quantum security key service method and system. The method comprises the following steps: first servers provide a plurality of user keys for clients and establish an association list, a second server creates exclusive-OR values of random number groups of any two first servers, the second server creates exclusive-OR values of the user keys of the two clients, and the two clients generate a shared key based on the exclusive-OR values. The system provided by the invention comprises a client device and a server device. According to the method, the second server only storesthe XOR values of associated keys, the service process has quantum security, and the problems of key security and management security of a traditional centralized key service system can be solved. The embodiment of the invention has good application and popularization prospects in the application fields of mobile secret communication, block chain transaction, VPN (Virtual Private Network) and thelike.

Description

technical field [0001] The present invention relates to the technical field of key service or negotiation, in particular to a quantum-safe key service method and system. Background technique [0002] Key service or negotiation is a key security technology in a secure communication system. The security of key negotiation based on classical cryptographic algorithms is usually based on the security of computational complexity, and does not have quantum security; and, the centralized The key service management system needs to store and manage the user keys of all users, and there is a key security management problem. Contents of the invention [0003] In order to solve the problems existing in the key service technology in the background technology, the present invention provides a quantum-safe key service method, including: the first server provides the client with a user random number sequence (or a plurality of user key groupings) ) and establish a service association list...

AI Technical Summary

Problems solved by technology

[0002] Key service or negotiation is a key security technology in a secure communication system. The security of key negotiation based on classical cryptographic algorithms is usually based on the security of computational complexity, and does not have quantum security; and, the centralized The key service management system needs to store and manage the user keys of all users, and there is a key security management problem

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