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:
Jun. 02, 2009
Filed:
Nov. 05, 2002
Michael Baentsch, Langnau am Albis, CH;
Peter Buhler, Horgen, CH;
Thomas Eirich, Waedenswil, CH;
Frank Hoering, Zurich, CH;
Marcus Oestreicher, Zurich, CH;
Thomas D. Weigold, Thalwil, CH;
Michael Baentsch, Langnau am Albis, CH;
Peter Buhler, Horgen, CH;
Thomas Eirich, Waedenswil, CH;
Frank Hoering, Zurich, CH;
Marcus Oestreicher, Zurich, CH;
Thomas D. Weigold, Thalwil, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Provides a data processing system comprising a processor and encrypted information in a first persistent memory whose level of information leakage is higher than that of a second persistent memory. The second persistent memory stores a cryptographic key for decrypting the encrypted information, generating therefrom unencrypted information that is usable by the processor for executing an operation. The cryptographic key may be used for encrypting the unencrypted information, generating the encrypted information. Also provided is a method of processing such a data-processing system with an operating system, comprising writing unencrypted information into the first persistent memory, encrypting the unencrypted information under use of the first cryptographic key, creating therefrom encrypted information in the first persistent memory, and setting the data-processing system to a state in which writing into the first persistent memory is controlled by the operating system.