Information security – Access control or authentication – Network
Reexamination Certificate
2011-07-19
2011-07-19
LaForgia, Christian (Department: 2439)
Information security
Access control or authentication
Network
C726S005000, C726S017000, C726S018000, C726S019000, C713S168000, C713S169000, C713S183000, C713S184000, C380S054000, C706S047000
Reexamination Certificate
active
07984491
ABSTRACT:
Disclosed is an off-line 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 to certain pattern elements included in the presentation pattern at specific positions so as to create a one-time password. An off-line authentication client pre-stores a plurality of pattern element sequences each adapted to form a presentation pattern, and a plurality of verification codes created by applying a one-time-password derivation rule to the respective presentation patterns and subjecting the obtained results to a one-way function algorithm. A presentation pattern is created using one selected from the stored pattern element sequences, and presented to a user. A one-time password entered from the user is verified based on a corresponding verification code to perform user authentication. The present invention provides an off-line matrix authentication scheme with enhanced security.
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Saito Tsugune
Tamai Shigetomo
Ueda Yukiya
Blakely Sokoloff Taylor & Zafman LLP.
Computer Systems Engineering Co., Ltd.
LaForgia Christian
Schmidt Kari L
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