Authentication system
US8959603B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 9, 2009 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/36
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An authentication system by which character strings in squares are selected by a rule determined by a user out of a table in which character strings are assigned to obtain a one-time password. The user memorizes a rule of successively selecting three out of the positions of the squares in a table having five rows and five columns, for example. To each square (402) in the table (401) to be presented to the user, a randomly generated two-digit number is assigned. The table (401) is presented to the user, who arranges the numbers in the squares (402) on the basis of the user's own rule to generate a six-digit number used as a one-time password for authenticating the user. Therefore, the rule for obtaining a one-time password is easy for the user to memorize and a long one-time password can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.