Title:
METHOD FOR APPLYING COMPETENCE BY USING LICENSE
Document Type and Number:
Japanese Patent JP2001255953
Kind Code:
A
Abstract:
To provide a method for guaranteeing the data maintainability of software for the controller of an automobile.
A pair of controller keys 300, having first and second keys and the prescribed number n of license key pairs 312 having the first and second keys, are used. The license information of the first license 318 is signed by using the second key 304 of the controller key pair 300, and software (320) to be newly inputted to a controller 360 is signed 322 by using the second key 314 in the license key pair 312, in which the first key is arranged in the license information of the last license.
Inventors:
SCHMIDT ERNST
KUHLS BURKHARD
KUHLS BURKHARD
Application Number:
JP2001032508A
Publication Date:
September 21, 2001
Filing Date:
February 08, 2001
Export Citation:
Assignee:
BAYERISCHE MOTOREN WERKE AG
International Classes:
B60R25/00; B60R25/24; G05B19/042; G06F21/57; G06F12/14; G09C1/00; (IPC1-7): G06F1/00; G06F12/14; G09C1/00
Domestic Patent References:
| JPH10222363A | 1998-08-21 | |||
| JPH11282753A | 1999-10-15 | |||
| JPH05210497A | 1993-08-20 | |||
| JPH11265349A | 1999-09-28 |
Attorney, Agent or Firm:
Takehisa Ito (1 outside)
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