Character deformation-based graphical password authentication method

A technology of graphic password and authentication method, applied in the field of graphic password coding and authentication, can solve problems such as popularization restrictions, and achieve the effects of improving complexity, convenient memory, and good graphic password authentication system

Inactive Publication Date: 2011-08-10
SUN YAT SEN UNIV
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Problems solved by technology

Dynamic password technology adopts the method of one-time pad, which effectively guarantees the sec

Method used

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  • Character deformation-based graphical password authentication method
  • Character deformation-based graphical password authentication method
  • Character deformation-based graphical password authentication method

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specific Embodiment approach

[0022] The method adopts an authentication operation mode in which a user selects a character picture, and combines the cartoon character shape generation technology and the image deformation technology to improve the operability and safety of the authentication system. A good graphic password authentication system based on role and image deformation technology has been realized. Provide the specific implementation manner of the present invention scheme below: (1) structure is based on the graphic password password of multi-posture personalized role deformation

[0023] First, the client synchronizes the gallery from the server, and the client distributes the character IDs randomly. With the support of the character pose library, the client randomly selects a pose for each character. The client uses the deformation parameters sent by the server to perform image deformation on the pose character graphics. The client displays the randomly distributed character pictures with po...

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Abstract

The invention relates to a character deformation-based graphical password authentication method. The scheme comprises the following steps of: adopting a personalized character deformation graphical password instead of a text password, and presetting a plurality of cartoon character graphics corresponding to a plurality of postures and deformation effects by using a system; constructing an image deformation technology-based public key authentication system in an image password transmission process, transmitting a public key which is an image deformation parameter, and performing authentication by taking an image backward deformation parameter as a private key, wherein a deformation and backward deformation key pair is generated by deformation restrictions, and the private key is insoluble from the public key; enhancing the machine authentication resistance of an image password system by adopting a multi-posture and identical-semanteme cartoon character model generation technology; and fusing a character image deformation technology into the graphical password to increase the coding fuzziness of the password as well as brute force cracking complexity. The method is easy to operate by a user, convenient to memorize and high in system security. The operability and security can be improved by adopting a character picture selection operating way in combination with the cartoon character model generation technology and the image deformation technology.

Description

technical field [0001] The invention relates to a graphic password authentication method, in particular to a graphic password encoding and authentication method based on multi-posture two-dimensional animation character deformation. Background technique [0002] Identity authentication is an important means for the network system to confirm the identity of the operator. How to ensure that the operator's physical identity is consistent with the digital identity under the flood of a large number of Trojan horses and viruses has become an important issue in the security of the current Internet. Identity authentication technology is divided into software authentication and hardware authentication. Currently commonly used software authentication methods mainly include username / static password and dynamic password. In the user name / static password mode, the user password is set by oneself and known by oneself. Just enter the preset password correctly during authentication. Sin...

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Application Information

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IPC IPC(8): H04L9/32H04L9/30G06T3/20
Inventor 杜晓荣张永徐燕蔡庆玲吴正伟
Owner SUN YAT SEN UNIV
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