Microcontroller and authentication method for microcontroller

The present invention provides a microcontroller, and authentication method and authentication program thereof. A simple structure can be used for preventing the illegal use of the program in the microcontroller. The program includes: a step (S23), an arbitrary value is written to an authentication...

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Bibliographic Details
Main Author HASHIDATE SHUICHI
Format Patent
LanguageChinese
English
Published 19.01.2011
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The present invention provides a microcontroller, and authentication method and authentication program thereof. A simple structure can be used for preventing the illegal use of the program in the microcontroller. The program includes: a step (S23), an arbitrary value is written to an authentication code generation module (6); and a step (S24), an authentication code is read from the authentication code generation module (6) and it is determined whether the authentication code matches the value written in the step (S23). Normal processing is performed if the program is executed by a regular microcontroller that has an authentication code generation module (6). If the program is executed by another microcontroller that does not have the authentication code generation module (6), the authentication code cannot be read and, therefore, continuation of the processing becomes impossible. Accordingly, illegal use of a copied program can be prevented.
Bibliography:Application Number: CN200610169208