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:
Oct. 22, 2013
Filed:
Apr. 23, 2007
Sasidhar Movva, Wheatley Heights, NY (US);
Richard D. Herschaft, Whitestone, NY (US);
Renuka Racha, Kings Park, NY (US);
Inyhok Cha, Yardley, PA (US);
Sasidhar Movva, Wheatley Heights, NY (US);
Richard D. Herschaft, Whitestone, NY (US);
Renuka Racha, Kings Park, NY (US);
Inyhok Cha, Yardley, PA (US);
InterDigital Technology Corporation, Wilmington, DE (US);
Abstract
An apparatus and methods that use trusted platform modules (TPM) to perform integrity measurements of multiple subsystems are disclosed. The state of platform configuration registers (PCRs) after boot up are stored as the base state of the system. In another embodiment, and application that is to be verified requests that its state be extended from the base state of the system. When such a request is received, the state of the system is extended directly from the base state PCR contents and not from the system state. In another embodiment, a virtual PCR is used, where such a virtual PCR uses a larger memory space than a conventional TPM provides for a physical PCR, by use of encrypted storage on external, protected memory.