A secure communication method and device in a wireless local area network
A technology of wireless local area network and secure communication, which is applied in the field of secure communication and equipment in wireless local area network, which can solve the problems of communication security risks, insufficient key length, insufficient key strength, etc., and achieve the effect of improving security
Active Publication Date: 2018-04-17
NATIONZ TECH INC
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Problems solved by technology
The characteristics of the 2.4GHz frequency band have the advantages of high transmission rate and long transmission distance, but because of the long distance of communication data transmission, the data transmitted through the 2.4GHz frequency band can be easily intercepted and used illegally in the air, thus Bring great security risks to communication
The current method of manually setting network keys for WLAN has the following disadvantages: First, the key strength may not be enough: the manually set key information often chooses simple and meaningful words or numbers for easy memory, and the key length is often not enough , so that the network key cannot achieve sufficient security strength; second, the manually set network key is easy to leak: because all users know the network key, so the user can tell the network key to outsiders, making it easy for outsiders to You can access the internal network, ranging from "crashing the Internet" to threatening the information security on the internal network
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[0050] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0051] The secure wireless local area network (WLAN) communication system device and method described in the embodiments of the present invention, by adding an additional communication module to the existing WLAN communication device, and then using the communication module to transmit WLAN key information through a secure out-of-band transmission channel, Thereby, the security of communication transmission is improved. The WLAN key information refers to information that is very important for WLAN access control and information security, including network keys (also known as WEP keys or WPA keys) that help prevent unknown network connections, and further, may also include Important information such as the session initialization vector (IV) of network encryption; The out-of-band transmission channel of described safety refers to th...
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The invention discloses a secure communication method in a wireless local area network, comprising: a network access point device randomly generates a network key; sends the network key to a mobile terminal device through a first channel; the mobile terminal device The network key is transmitted to the client device through the second channel; the network access point device communicates with the client device by using a session key including the network key. Through the communication method proposed by the embodiment of the present invention, key information can be sent from a highly secure out-of-band channel, thereby improving the security of communication transmission.
Description
technical field [0001] The invention relates to a secure communication method and equipment in a wireless local area network. Background technique [0002] At present, various radio frequency (Radio Frequency, RF) communication applications are very extensive, especially 2.4GHz as the global ISM (Industrial Scientific Medical, Industrial Science Medical) frequency band, in wireless local area network (WLAN), Bluetooth, ZigBee and other wireless communications Has a wide range of applications. The characteristics of the 2.4GHz frequency band have the advantages of high transmission rate and long transmission distance, but because of the long distance of communication data transmission, the data transmitted through the 2.4GHz frequency band can be easily intercepted and used illegally in the air, thus It brings great security risks to communication. [0003] In a WLAN, for security purposes, a network key is generally used to control access to the WLAN, and encryption techno...
Claims
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IPC IPC(8): H04W12/02H04W12/04H04W12/03H04W12/0431
Inventor 杨贤伟
Owner NATIONZ TECH INC