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Session key updating method in intelligent device communication

A technology for smart devices and session keys, applied to secure communication devices and key distribution, can solve the problems of increasing the security risk of session keys and keeping them unchanged, increasing time costs, reducing continuous losses, and increasing security. Effect

Active Publication Date: 2017-11-21
SHENZHEN XIN YUPENG ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, many session keys will only be established once after the device is powered on, and will not be changed later until the device is powered on again
Although this mechanism generates a session key, it only generates a session key once. If the device is powered off for a long time, the session key will remain unchanged for a long time, which increases the security risk of the session key being cracked.

Method used

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  • Session key updating method in intelligent device communication
  • Session key updating method in intelligent device communication
  • Session key updating method in intelligent device communication

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Embodiment Construction

[0027] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, and the embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application and cannot be construed as a reference to the present application. limits.

[0028] Such as figure 1 As shown, the network topology of smart devices currently on the market is as follows: figure 1 shown. The smart device network interconnection system is basically divided into three parts: cloud server, mobile APP and smart network devices. Cloud servers are mainly used to process some big data services and manage smart devices; mobile APPs are mainly responsible for human-computer interaction; smart devices are mainly responsible for actual execution functions. Therefore, there will be a large amount of data interaction between these three parts, and most of these data interactions are based on the ...

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Abstract

The invention provides a session key updating method in intelligent device communication. The method comprises the following steps: the intelligent device is power-on; a first session key SessionKey_1 is generated, and the intelligent device begins timing and a second session key SessionKey_2 is generated; after the intelligent device carries out timing to set time, a message frame is updated to a cloud server; the cloud server replies a response frame to the intelligent device, and the intelligent device uses the second session key SessionKey_2 to replace the first session key SessionKey_1; and session key updating is completed, the intelligent device begins timing again and a third session key SessionKey_3 is generated, and a new session key updating period is begun. The session key is updated once for each hour, continuous changing of the session key even if the device is not power-off for a long time can be ensured, and the continuation loss caused after the session key is cracked can be reduced.

Description

technical field [0001] The invention relates to updating a session key during data communication between an intelligent device of the Internet of Things and a cloud server, and specifically relates to a method for updating a session key during communication between an intelligent device. Background technique [0002] Application data: refers to the data content such as control instructions and status instructions between the cloud server and the smart device. [0003] Session: refers to the process of application data interaction between smart devices and cloud servers. [0004] Session key: It enables the cloud server to confirm which smart device is having a session with it, and securely encrypts the data in the session. [0005] Establish a session: Before the smart device and the cloud server can have a session, a session key needs to be generated, and then the communication between the smart device and the cloud server is carried out. This process of generating a sess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L9/08H04L9/06
CPCH04L9/0631H04L9/0891H04L63/0435H04L63/068
Inventor 杨俊罗伟民邹伟
Owner SHENZHEN XIN YUPENG ELECTRONICS TECH CO LTD
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