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. 26, 2010
Filed:
Aug. 27, 2004
Dinarte R. Morais, Redmond, WA (US);
Jeffrey A. Andrews, Sunnyvale, CA (US);
William E. Hall, Clinton, CT (US);
Dinarte R. Morais, Redmond, WA (US);
Jeffrey A. Andrews, Sunnyvale, CA (US);
William E. Hall, Clinton, CT (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A computing environment maintains the confidentiality of data stored in system memory. The computing environment has an encryption circuit in communication with a CPU. The system memory is also in communication with the encryption circuit. An address bus having a plurality of address lines forms part of the system and a value of at least one of the address lines determines a key selected from a plurality of keys to use in the encryption circuit to encrypt data being transferred by the CPU to the memory.