SYSTEM AND METHOD FOR SELECTING RANDOM PROCESSOR TO BOOT MULTIPROCESSOR SYSTEM

PROBLEM TO BE SOLVED: To provide a method that makes it more difficult to monitor a boot sequence of a processor to make a system more secured against an unauthorized intrusion. SOLUTION: A random event generator 242 randomly selects which processor out of a plurality of processors 280-290 in a mult...

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Hauptverfasser:	SPANDIKOW CHRISTOPHER JOHN, O'NIELL CLARK MCKERALL, DALE JASON NATHANIEL, DEMENT JONATHAN JAMES
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method that makes it more difficult to monitor a boot sequence of a processor to make a system more secured against an unauthorized intrusion. SOLUTION: A random event generator 242 randomly selects which processor out of a plurality of processors 280-290 in a multiprocessor system is to be a boot processor. A configuration bit associated with the randomly selected processor is set to a configuration bit register 250 to identify that processor to be the boot processor. Based on setting of the configuration bit for each of the processors 280-290, a secret key is selected. Thereafter, with use of the secret key, a boot code for booting the multiprocessor system is decrypted. Only randomly selected boot processor can select the proper secret key for properly decrypting the boot code. Then, the boot code is executed so as to bring the system into an operation state. COPYRIGHT: (C)2008,JPO&INPIT