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Key exchange method, device and system

A key exchange and key technology, applied in transmission systems, digital transmission systems, secure communication devices, etc., can solve problems such as waste of computing resources

Active Publication Date: 2020-06-09
HISENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that asymmetric key algorithms and symmetric key algorithms are built in the server at the same time, resulting in the waste of more computing resources, the present invention provides a key exchange method, device and system

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  • Key exchange method, device and system
  • Key exchange method, device and system

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Embodiment Construction

[0109] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0110] Please refer to figure 1 , Which shows a schematic structural diagram of a smart home system provided by an embodiment of the present invention. The smart home system includes: a server 120, a smart home device 140, and a controller 160.

[0111] The server 120 may be one server, a server cluster composed of multiple servers, or a cloud computing service center. Optionally, the server 120 is usually a server set up by a manufacturer of the smart home device 140. The server 120 has remote connection capability and remote control capability to the smart home device 140.

[0112] Optionally, the server 120 establishes a connection with the smart home device 140 and the controller 160 through a wireless network or a wired network, respectivel...

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PUM

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Abstract

The invention provides a secret key exchange method, device and system, and belongs to the technical field of intelligent household. The method comprises that according to an equipment identification and a first equipment secret key sent by a controller, a correspondence between the equipment identification and the first equipment secret key is stored; according to an equipment identification sent by intelligent household equipment, a corresponding first equipment secret key is inquired, and according to the first equipment secret key, a first session secret key is encrypted to obtain first encryption information; and the first encryption information is sent to the intelligent household equipment, so that according to the first equipment secret key sent by the controller, the intelligent household equipment decrypts the first encryption information to obtain the first session secret key. According to the invention, the controller generates the first equipment secret key, the first equipment secret key is sent to a server and the intelligent household equipment, so that the controller can assist in secret exchange of the first session secret key between the server and the intelligent household equipment, and computing resources in the server are saved.

Description

Technical field [0001] The present invention relates to the field of smart home technology, in particular to a key exchange method, device and system. Background technique [0002] With the continuous development of smart home technology, the security and confidentiality of smart home systems are getting higher and higher. A smart home system usually includes a server and multiple smart home devices. In order to improve the security of data transmission, when the server and the smart home device are transmitting data, the session key is used to encrypt or decrypt the transmission data between the two, and the asymmetric encryption algorithm is used in advance to complete this before using the session key. In the exchange of session keys, an asymmetric encryption algorithm refers to an algorithm that uses two different keys (ie, asymmetric key pairs) for encryption and decryption. [0003] At present, the method for exchanging session keys is: the server generates an asymmetric ke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L9/08
CPCH04L9/0819H04L63/0442H04L63/061
Inventor 刘相双
Owner HISENSE