Two-dimensional information encryption method and device, and two-dimensional information authenticating method and server

Abstract

The method includes steps: setting up length of 2D information (Info) and / or additive attribute value (AAV) of the 2D Info; integrating a set of 2D Info with length and AAV into Info unit; Info units constitute 2D Info encryption table. The invention also discloses 2D Info encryption device, 2D Info authentication method, and 2D Info authentication server. Since each length of 2D Info of Info unit in 2D Info encryption table is not fixed, thus, breaker is unable to determine specific content of each piece of 2D Info in Info unit based on inputted 2D Info so as to increase difficulty for breaking Info, and raise security of Info. Moreover, because AAV can be added to 2D Info, breaker is unable to record and recognize attributes automatically. Thus, the invention prevents action of extensive stealing Info automatically.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a two-dimensional information encryption method and device, a two-dimensional information authentication method and a server. Background technique [0002] In order to solve the identity authentication problem on the Internet, some two-dimensional password cards for identity authentication have appeared. There is a unique secret form printed on this two-dimensional password card, and the content of the form is different for each card. Usually, the form of this two-dimensional password card has M rows and N columns (both M and N are integers), and there are 2 or 3 digits in each cell. When the two-dimensional password card is authenticated, the server requires the user to provide the content values ​​of several cells in the table. If the content of the user’s answer is correct, the server will pass the authentication, indicating that the user is the legal owner of ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a two-dimensional information encryption method to overcome the problems of low security and vulnerability to attacks in the prior art.

[0012] Another object of the present invention is to provide a two-dimensional information authentication method to overcome the problem of low security in the information authentication process in the prior art

[0013] Another object of the present invention is to provide a two-dimensional information encryption device and a two-dimensional information authentication server to overcome the problem of low security in the encryption and authentication process in the prior art

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