Terminal device and method for requesting user certification from host computer
AssigneeCanon Kabushiki Kaisha
InventorHIDEKI HASHIKURA
Life of this patent
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Abstract
A terminal device generates and transmits to a host computer a user certification code formed by combining a unique password input by a user and a unique code stored in the terminal device when the host computer requests a password from the terminal device. The host computer uses the certification code to perform user certification. Thereby, if a password assigned to one user is used, the host computer cannot be accessed by a terminal device other than the user's terminal device. Thus, security can be maintained, even if another person knows the password.
Claims18
A terminal device capable of accessing a host computer which performs user certification based on a certification code received from said terminal device, comprising:
- input means for inputting a password assigned to a user;
- storage means for holding unique information about said terminal device;
- generating means for generating a certification code based on said password and said unique information;
- and
- transmitting means for transmitting said certification code to the host computer.
A method for a terminal device to request user certification from a host computer which performs user certification based on a certification code received from said terminal device, said method comprising the steps of:
- inputting a password assigned to a user;
- reading unique information stored in said terminal device;
- generating a certification code based on said password and said unique information;
- and
- transmitting said certification code to the host computer.
A user certification system comprising a host computer and a plurality of terminal devices capable of accessing the host computer,
- in which said plurality of terminal devices each include:
- input means used to input a password assigned to a user;
- storage means for holding unique information about said terminal device;
- generating means for generating a certification code based on said password and said unique information;
- and transmitting means for transmitting said certification code to the host computer, and
- the host computer includes:
- receiving means for receiving said certification code;
- and certification means for performing user certification based on the received certification code.
A computer-readable storage medium holding an information processing program for controlling a computer in a terminal device to request user certification from a host computer, said program comprising codes for causing the computer to perform the steps of:
- inputting a password assigned to a user;
- reading unique information stored in said terminal device;
- generating a certification code based on said password and said unique information;
- and transmitting said certification code to the host computer.
Dependencies are inferred from the claim text.