08875264 is referenced by 7 patents and cites 23 patents.

Provided is an off-line two-factor user authentication system. The off-line two-factor user authentication system is designed to use, as a password, a one-time-password derivation rule to be applied to certain pattern elements included in a presentation pattern at specific positions so as to create a one-time password, and further use, as a second authentication factor, information identifying a client to be used by a user. A plurality of pattern seed values each adapted to uniquely specify a presentation pattern in combination with a client ID, and a plurality of verification codes corresponding to respective ones of the pattern seed values, are stored in an off-line two-factor authentication client. A presentation pattern is created based on a selected one of the pattern seed values and a client ID, and an entered one-time password is verified based on a verification code corresponding to the selected pattern seed value.

Title
System, method and program for off-line two-factor user authentication
Application Number
13/520177
Publication Number
8875264 (B2)
Application Date
October 5, 2010
Publication Date
October 28, 2014
Inventor
Tsuyoshi Kobayashi
Tokyo
JP
Toru Takano
Tokyo
JP
Shigetomo Tamai
Tokyo
JP
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
CSE
JP
IPC
G06F 21/36
H04L 9/32
H04L 29/06
H04L 9/08
G06F 21/00
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