A codebook verification method for quantum secure communication

A technology for quantum secure communication and codebook verification, applied in the field of quantum secure communication, it can solve the problems of no longer being used, reducing the efficiency of key use, and unable to guarantee the consistency of keys, so as to ensure reliable transmission and achieve uniqueness. Effect

Active Publication Date: 2016-08-17
CHONGQING HUAPU SCI INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of this method is that the key used for verification can no longer be used after it is published, and can only be discarded
This reduces the use efficiency of the key. In addition, in some extreme cases, even if the published part is consistent, the remaining key cannot be guaranteed to be consistent.

Method used

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  • A codebook verification method for quantum secure communication
  • A codebook verification method for quantum secure communication

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Experimental program
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Embodiment

[0069] a. Configure a field programmable gate array (FPGA) logic chip (EP4CGX50DF27C8) at both ends of the transceiver, establish the synchronization of the classic channel through the FPGA, and control the ALC and BOB to obtain the original information of the generated codebook;

[0070] b. Codebook screening: First, group and calculate the respective original information according to the agreement of both parties:

[0071] i) Grouped as follows:

[0072] A) The adjacent 8 bits form a group, a total of 3 groups, then

[0073] Group 1 sequence: {bit0~bit7}

[0074] The second group sequence: {bit8~bit15}

[0075] The third group sequence: {bit16~bit23};

[0076] B) The 4 adjacent bits of an even number form a group, and the 4 adjacent bits of an odd number form a group, and there are 8 groups in total, then:

[0077] Group 1 sequence: {bit0, bit2, bit4, bit6}

[0078] The second group sequence: {bit1, bit3, bit5, bit7}

[0079] Group 7 sequence: {bit24, bit26, bit28, bit...

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Abstract

The invention discloses a codebook verifying method for quantum secret communication. The method comprises the following steps: a plurality of screening, comprising a plurality of grouping operation, comparison and rearrangement of codebooks, are implemented for original information of generated codebooks obtained through ALC and BOB to obtain the codebooks with higher credibility; then the obtained screened codebooks are integrally calculated to obtain one supervision code; if the supervision codes of two parties are consistent, the codebooks are reliable codebooks; otherwise, the codebooks are unreliable and directly discarded; the next group of codebooks is generated renewedly. Through using the codebook verifying method, the two parties for communication can obtain safe and reliable codebooks without disclosing one section of secret keys; the characteristics of stability and high efficiency are achieved. The codebook verifying method can be used for solving the problem for obtaining credible codebooks in the quantum secret communication, can improve the characteristics of secret reliable transmission of the quantum communication system, and has the characteristics of high efficiency and high stability.

Description

technical field [0001] The present invention relates to the technical field of quantum secure communication, specifically speaking, in a quantum key distribution (QKD) system, for the initial key generated by the quantum channel, it is corrected and verified through group operations, and finally obtained A reliable codebook method. Background technique [0002] Scientists have proposed the concept of quantum cryptography by using the "Heisenberg Uncertainty Principle" and the "Quantum Non-cloning Principle". Quantum cryptography uses a single quantum state as an information carrier. Since a single quantum state cannot be cloned, the legal receiver of the information can know that there is eavesdropping in the channel from the change of the quantum state, thereby ensuring information security. From the 1980s to the present, quantum secure communication has experienced nearly 30 years of development, and various practical equipment and commercial prototypes have been launched...

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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