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A dynamic codebook management method for a quantum secure communication system

A quantum security communication and management method technology, applied in the field of quantum security communication, can solve problems such as inability to update dynamically, easy codebook cracking, poor communication encryption, etc., achieve high stability, high efficiency and stability, and improve encryption Effect of reliable transmission characteristics

Active Publication Date: 2016-06-22
CHONGQING HUAPU SCI INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing system, the codebook used is generated using polynomials, and the codebook is easy to crack
Either use the fixed codebook agreed by both parties, which cannot be updated dynamically, is easy to be cracked, and the communication encryption is not good

Method used

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  • A dynamic codebook management method for a quantum secure communication system
  • A dynamic codebook management method for a quantum secure communication system
  • A dynamic codebook management method for a quantum secure communication system

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Embodiment Construction

[0013] Hereinafter, the features of the present invention and other related features will be further described in detail through embodiments in conjunction with the accompanying drawings, so as to facilitate the understanding of those skilled in the industry:

[0014] Taking two bufs as an example, there are two trusted buffer areas (buf0 / buf1) in device A / B, which are used to store codebooks.

[0015] Phase A: Just after power-on, there is no codebook in the two buffers, and data cannot be encrypted or decrypted at this time.

[0016] Stage B: Device A / B first fills in the codebook in buf0. In stage B, the codebook is filled in buf1. At this time, device A / B can use buf0 for two-way encryption and decryption transmission.

[0017] Stage C: When the codebook in buf0 is used to encrypt data, device A / B can write the codebook in buf1. Such as figure 1 In the middle stage C, the codebook is just filled in buf1. When the module that is using the codebook in buf0 for encryption and decryp...

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Abstract

The invention discloses a dynamic codebook management method for a quantum secret communication system. The method comprises the steps that two parties in communication respectively establish trusted cache areas with the same number, part of the cache areas are used for achieving the encryption and decryption function at the same moment, the remaining cache areas are used for achieving the new secret key filling function, the functions of the cache areas are switched according to the filling dynamic state of new secret keys, and seamless connection of the secret keys is achieved. During communication, a coding party needs to notify a decoding party of the number of a used codebook at this time, and the decoding party decode conducts decryption according to the number. When a new codebook is used, the old codebook is not discarded at once, instead, the old codebook is updated after the two parties receive the new number confirmation, and the consistence of the codebook in the full duplex mode is ensured. The dynamic codebook management method for the quantum secret communication system not only can ensure that full duplex communication is conducted between the terminals, but also can achieve the dynamic seamless connection of the secret keys. The dynamic codebook management method can be used for achieving codebook sharing of the receiving end and the sending end of the device in the quantum secret communication system and synchronous dynamic updating, improve the encryption reliable transmission characteristics of the quantum secret communication system and has the advantages of being high in efficiency and stability.

Description

Technical field [0001] The present invention relates to the technical field of quantum secure communication, in particular to provide a new type of dynamic codebook management method in a quantum secure communication system. Background technique [0002] Quantum secure communication technology has undergone thirty years of development since it was proposed. It uses single photons to load and transmit information, and uses the principle of unclonability and uncertainty of single quantum states. Once an eavesdropper performs operations such as eavesdropping, it will lead to a quantum state. The change is found by the legal communication parties, so quantum secure communication can effectively ensure the security of communication. [0003] At present, the practical foundation of quantum secure communication technology is mature, and prototypes of secure communication commercial products have been launched one after another, but there is no set of quantum key management solutions with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08
Inventor 曾卓西陈杰张帅曾和平
Owner CHONGQING HUAPU SCI INSTR CO LTD
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