System and method for communicating with a key variable loader (KVL) using a standard universal asynchronous receiver transmitter (UART) peripheral

An encryption key interface system ( 200 ) includes a universal asynchronous receiver transmitter (UART) peripheral ( 209 ) that communicates with a key variable loader (KVL) ( 201 ) through a communications link ( 205, 207 ). A driver application ( 211 ) associated with the UART peripheral ( 209 )...

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Bibliographic Details
Main Author BOERGER MARK A
Format Patent
LanguageEnglish
Published 06.10.2005
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
JAMMING OF COMMUNICATION
SECRET COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:An encryption key interface system ( 200 ) includes a universal asynchronous receiver transmitter (UART) peripheral ( 209 ) that communicates with a key variable loader (KVL) ( 201 ) through a communications link ( 205, 207 ). A driver application ( 211 ) associated with the UART peripheral ( 209 ) is used to both receive and transmit commands to the KVL ( 201 ). The invention operates to allow the driver application ( 211 ) to communicate key command information to the KVL ( 201 ) without the use of a timer peripheral enabling the system to interface with a much broader range of devices utilizing encryption keys without requiring the use of timer system resources.
Bibliography:Application Number: US20040814315