The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2014
Filed:
Aug. 06, 2008
Ralf Findeisen, Dresden, DE;
Michael Grell, Dresden, DE;
Tim Edward Perley, Boulder, CO (US);
Marc Edwin Jones, Longmont, CO (US);
Frank Schuecke, Dresden, DE;
Ralf Findeisen, Dresden, DE;
Michael Grell, Dresden, DE;
Tim Edward Perley, Boulder, CO (US);
Marc Edwin Jones, Longmont, CO (US);
Frank Schuecke, Dresden, DE;
GLOBALFOUNDRIES Inc., Grand Cayman, KY;
Abstract
A secure boot processing may be accomplished on the basis of a non-volatile memory that is an integral part of the CPU and which may not be modified once a pre-boot information may be programmed into the non-volatile memory. During a reset event or a power-on event, execution may be started from the internal non-volatile memory, which may also include public decryption keys for verifying a signature of a portion of a boot routine. The verification of the respective portion of the boot routine may be accomplished by using internal random access memories, thereby avoiding external access during verification of the boot routine. Hence, a high degree of tamper resistance may be obtained, for instance, with respect to BIOS modification by exchanging BIOS chips.