07409705 is referenced by 25 patents and cites 9 patents.

Disclosed is a user authentication system, which is designed to present a presentation pattern to a user subject to authentication, and apply a one-time-password derivation rule serving as a password of the user to certain pattern elements included in the presentation pattern at specific positions so as to create a one-time password. An authentication server is operable to generate a pattern seed value adapted to be combined with a user ID so as to allow a presentation pattern to be uniquely determined, and transmit the generated pattern seed value to an authentication-requesting client. The authentication-requesting client is operable to display a presentation pattern created based on an entered user ID and the received pattern seed value and in accordance with a given pattern-element-sequence creation rule, so as to allow the user to enter therein a one-time password, and transmit the entered one-time password to the authentication server. The authentication server is operable to duplicate the presentation pattern so as to create a verification code, and compare between the received one-time password and the created verification code, so as to carry out user authentication. The present invention provides a matrix authentication scheme capable of reducing the risk of password leakage.

System and method for user authentication
Application Number
Publication Number
7409705 (B2)
Application Date
June 9, 2006
Publication Date
August 5, 2008
Shigetomo Tamai
Tsugune Saito
Yukiya Ueda
Blakely Sokoloff Taylor & Zafman
Stephen M De Klerk
Computer Systems Engineering
G06F 7/04
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