Identity authentication method and identity authentication system based on signature

Abstract

The invention relates to an identity authentication method and an identity authentication system based on signature. The identity authentication method includes the steps of inputting signature information on a touch screen of a computer or a cellphone online, preprocessing the signature information via zooming a signature waveform, spinning, translating and filtering operation; extracting signature characteristics, finding out an optimized time calibration matching path between signature characteristics of a signature to be detected and signature characteristics of a sample signature, calculating distance between the signature to be detected and the sample signature; judging the signature to be true if the calculated distance is smaller than a threshold value, otherwise, judging the signature to be false. The identity authentication method and the identity authentication system have the advantages that the problems about forgetting a password, disclosure of the password and illegal attack and the like of a signature authentication method are avoided, safety in login and identity authentication is improved, and required authentication time is greatly reduced since the authentication is implemented in a one-to-one mode and authentication of a user name / password based authentication method is implemented in a one-to-many mode.

Description

technical field [0001] The invention relates to the field of pattern recognition for identity authentication by using human biometric features, that is, handwritten signatures, in particular to an identity authentication method and system based on handwritten signatures. Background technique [0002] In the field of identity authentication, most fields adopt a fixed password identity authentication method, that is, a user name / password authentication method. The main principle of the username / password authentication method is to compare the username / password and other information entered by the user with the database. If the comparison is successful, the identity authentication is passed, otherwise, the identity authentication is not passed. For example, the identity authentication of computer users, the identity authentication of network users, the identity authentication of bank card users, the identity authentication of enterprise employees entering the office area, etc. ...

AI Technical Summary

Problems solved by technology

[0003] Most user name / password authentication methods require the user to memorize the authentication password. Users tend to use short passwords, which will cause low system security and are easy to be attacked. When users use long passwords, they are easy to forget; when users use the same password for a long time, The storage period is too long, and the possibility of being cracked is increasing day by day, but the password is often changed, and it is easy to confuse

Once the user forgets the authentication password, it cannot be authenticated

Moreover, once an illegal user obtains the authentication password of a legitimate user, he can pass the verification in a legal way, which is less secure.

The password of the identity authentication method based on user name / password is easy to forget, leak and be illegally attacked by others

This method is increasingly unable to meet the security requirements of the existing network, thus an identity authentication scheme with higher security is urgently needed, so the identity authentication scheme based on handwritten signature emerges as the times require

Images