Strong authentication method and system based on quantum symmetric key

Abstract

The invention belongs to the technical field of quantum key distribution, and particularly relates to a strong authentication method and system based on a quantum symmetric key, and the method comprises the steps: obtaining a quantum key file, and carrying out the secret amplification of the quantum key file according to a poly1305 algorithm; packaging the obtained quantum key by using a key packaging algorithm and a user password; the sender performing decapsulation to obtain a quantum key and a plaintext, obtaining a message authentication code, a ciphertext and a unique value through a poly1305 algorithm, and transmitting the message authentication code, the ciphertext and the unique value to the receiver through a public network after packaging; and the receiver receiving the packagedmessage, unpacking the packaged message to obtain a ciphertext, a unique value and a received message identification code, calling a quantum key and a poly1305 algorithm to calculate to obtain a plaintext and a calculated message identification code, and comparing whether the calculated message identification code is the same as the received message identification code to identify the integrity ofthe message. Message integrity of users of two communication parties can be powerfully guaranteed, leakage of sensitive information is effectively prevented, decoding of a quantum computer is resisted, and information safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of quantum key distribution, and in particular relates to a strong authentication method and system based on quantum symmetric keys. Background technique [0002] Quantum key distribution mainly includes two stages: the quantum signal transmission stage and the post-processing stage. The quantum signal transmission stage mainly includes operations such as sending, receiving, and measuring quantum states performed by Alice and Bob in the quantum channel. The post-processing stage mainly Including base, error estimation, key agreement (error correction), error verification and security amplification process. With the rapid development of high-speed quantum key distribution system, the post-processing stage has become a bottleneck restricting its high-speed performance. Therefore, fast The study of effective post-processing algorithms plays a very important role in high-speed quantum key distribution systems. ...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the hidden security problem that the traditional message integrity authentication method relies on computational complexity, this invention proposes a strong authentication method and system based on quantum symmetric keys, which has quantum security characteristics and has nothing to do with computing power. The user's message integrity can be strongly guaranteed, effectively preventing the leakage of sensitive information, used to resist the deciphering of quantum computers, and ensure information security

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