Keystroke-based identity authentication method and system

Abstract

The present invention provides an identity authentication method based on the keystroke behavior, comprising the following steps: S1, constructing a user model of the keystroke characteristics of the legal user according to the legal keystroke behavior during the training of the legal user; The estimated keystroke behavior generates an estimated keystroke time sequence; S3, generates an estimated extremely adjacent character sequence according to the estimated keystroke time sequence; S4, combines the estimated extremely adjacent character sequence with the user model Carry out a match, and judge whether the keystroke behavior to be estimated of the logged-in user is legal according to the matching result; keystroke behavior and update the user model. Only a small number of representative keystroke features of the user are extracted, which improves the responsiveness of continuous authentication while ensuring the accuracy of authentication; monitors the user's keystroke behavior in real time to provide users with continuous account security.

Description

technical field [0001] The invention relates to the Internet field, in particular to an identity authentication method and system based on keystroke behavior. Background technique [0002] With the rapid development of the Internet, users have higher requirements on the security of accounts in the Internet. The most common method by far is authentication based on a text-matching combination of username and password. Although this method is simple and easy to implement, once the password is leaked, this identity authentication method will become invalid. Since everyone's behavior has its own biological characteristics, and the user's keystroke behavior is related to the user's age, gender, and familiarity with computer keyboards, the keystroke behavior patterns of different users are difficult to be imitated and embezzled by others of. Moreover, the authentication method based on the keystroke behavior does not require additional hardware support, the cost is low, and the ...

AI Technical Summary

Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an identity authentication method and system based on keystroke behavior, which is used to solve the problem of excessive collection, high cost, and inability to real-time user authentication in the prior art. The problem of confirming the legality of identity

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