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:
Aug. 10, 2010
Filed:
Nov. 06, 2006
Applicant:
Somnath Mitra, Pleasanton, CA (US);
Inventor:
Somnath Mitra, Pleasanton, CA (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/14 (2006.01); G06F 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In one embodiment, a Central Processing Unit having a processing core. The processing core connects to an internal memory bus having N address lines and X data lines. A cache connects to the internal memory bus and uses M of N bits of the N address lines to address data stored in the cache. A cryptographic unit in the CPU encrypts data written to an external memory and decrypts data read from the external memory. The cryptographic unit encrypts and decrypts N-M address lines of the internal memory bus and the data lines of the bus.