| 摘要 |
Disclosed is a method and apparatus that protects user passwords and identification numbers by using dynamic and fixed cipher keys to generat e one-time access codes that are recognized by an authorization center. The authorization center provides a user with a pool of user selectable algorith ms that are easily remembered by a user. When access is desired the user mentally generates and subsequently enters a non-machine generated access code formed by using the selected algorithm, the password, and a dynamic variable. The authorization center also generates a corresponding access code using stored user data. If the two access codes match access is granted.
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