A public wireless network access method and device

Abstract

The present invention provides a method and device for accessing a public wireless network. An authentication server issues a first digital certificate and a second digital certificate to a mobile terminal and an AP respectively, and the mobile terminal generates a random code. After the AP receives the random code, The random code is verified according to the second digital certificate and the authentication server. After the verification is passed, the authentication server signs and encrypts the random code, and the mobile terminal further decrypts and verifies the random code according to the first digital certificate, thereby judging Whether the current AP is trusted, and determine whether to establish a connection with the AP. In the scheme of the present invention, the mobile terminal, the authentication server and the AP verify the random code with variable length and characters, and the authentication server distributes keys for the mobile terminal and the AP respectively to verify the random code, which changes the public wireless network access authentication. A mechanism to improve the security and reliability of public wireless network access.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a public wireless network access method and device. Background technique [0002] At present, mobile phones supporting WIFI functions have been widely popularized. At the same time, WIFI coverage has been basically realized in major commercial buildings, airports, stations, buses and other public places. Some of these WIFI providers are telecom operators, and some are merchants themselves. Due to the lack of unified management of these WIFI hotspots, it is inevitable that some WIFI hotspots with bad intentions will be mixed in them. [0003] Existing WIFI hotspot access usually only involves two pieces of information, the hotspot name and the access password. Mobile terminal users establish a connection with the AP by searching for the hotspot and entering the password, and some free WIFI hotspots can even be accessed without a password. . [0004] In the existi...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a public wireless network access method and device to at least partly solve the problem of poor public wireless network access security

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