Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Key agreement method and device

A key negotiation and algorithm technology, applied in the field of communication, can solve the problems of channel coding error diffusion, low negotiation efficiency, and low error correction ability of key negotiation, so as to solve the problem of error diffusion, excellent negotiation performance, and high error correction ability. Effect

Active Publication Date: 2019-12-13
郑州信大先进技术研究院 +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a key agreement method and device to solve the problems of low error correction ability, low negotiation efficiency and error diffusion caused by channel coding existing in the existing key agreement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Key agreement method and device
  • Key agreement method and device
  • Key agreement method and device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] figure 2 A schematic flowchart of the key agreement method provided by the embodiment of the present invention is shown. The key agreement method is applied to the first communication end Alice and the second communication Bob who are connected in communication with each other. It should be noted that the key agreement method described in the present invention does not use figure 2 And the specific order described below is a limitation. It should be understood that in other embodiments, the order of some steps in the key agreement method of the present invention may be exchanged according to actual needs, or some steps may be omitted or deleted. The following will be figure 2 The specific process shown will be described in detail.

[0035] Step S110, dichotomous negotiation.

[0036] Using the dichotomy method for key agreement can avoid the problem of error diffusion when the initial information sequence inconsistency rate is high. In this embodiment, it is as...

no. 2 example

[0069] Figure 6 A schematic diagram of functional modules of the key agreement apparatus 200 provided by the embodiment of the present invention is shown. It should be noted that the basic principles and technical effects of the key agreement device 200 provided by this embodiment are the same as those of the first embodiment. For a brief description, the parts not mentioned in this embodiment can be referred to the first embodiment corresponding content in the example. The key agreement device 200 is applied to a first communication end and a second communication end connected by mutual communication, and includes a dichotomy negotiation module 210 , a Polar code negotiation module 220 , a second judging module 230 and an execution module 240 .

[0070] The dichotomy negotiation module 210 is used for bisection negotiation.

[0071] It can be understood that the dichotomy negotiating module 210 may perform the above step S110.

[0072] Such as Figure 7 As shown, the dic...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Embodiments of the invention provide a key negotiation method and device and relate to the technical field of communication. The key negotiation method comprises bisection negotiation and Polar code negotiation, wherein the bisection negotiation comprises a step of respectively carrying out error correction on a first initial information sequence and a second initial information sequence to obtain a first information sequence and a second information sequence respectively; the Polar code negotiation comprises the following steps of carrying out binary addition on the first information sequence and a sequence after Polar code encoding to obtain a third information sequence; carrying out binary addition on the second information sequence and the third information sequence to obtain a fourth information sequence; decoding the fourth information sequence to extract a fifth information sequence; encoding the fifth information sequence and carrying out binary addition with the third information sequence to obtain a sixth information sequence; randomly deleting sequence information with the preset length from the sixth information sequence to obtain a seventh information sequence; and judging whether key negotiation is successful according to the seventh information sequence and the first information sequence. According to the key negotiation method and device, a problem of error extension is solved, the error correcting capability is high and the negotiation performance is better.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular, to a key agreement method and device. Background technique [0002] Polar codes are also called polar codes, because they can reach the Shannon limit on binary symmetric channels and have the advantages of low encoding and decoding complexity, so they are suitable for key agreement. The core of the Polar code is to use a constructive method to polarize sub-channels with different channel capacities based on the channel polarization phenomenon, that is, through the combination and separation of channels, the channel capacity of some channels is close to 1, and the channel capacity of other channels is close to 1. The channel capacity tends to 0, and the larger the combined channel number N is, the more obvious the polarization phenomenon is. The sub-channel with high channel capacity is selected to transmit information bits, while the sub-channel with low channel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08
CPCH04L9/0838
Inventor 于大鹏郭福星辛刚张水莲张刚王坤
Owner 郑州信大先进技术研究院
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com