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. 26, 2008
Filed:
Jan. 14, 2005
Martin Abadi, Palo Alto, CA (US);
Ulfar Erlingsson, San Francisco, CA (US);
Jay A. Ligatti, Princeton, NJ (US);
Mihai-dan Budiu, Sunnyvale, CA (US);
Martin Abadi, Palo Alto, CA (US);
Ulfar Erlingsson, San Francisco, CA (US);
Jay A. Ligatti, Princeton, NJ (US);
Mihai-Dan Budiu, Sunnyvale, CA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Software memory access control is provided by associating instruction areas with memory areas such that instruction areas are not permitted to access memory areas with which they are not associated. Checks may be inserted in the instruction areas to ensure that data provided by a memory group is provided by an associated memory area. Additionally, control flow integrity for the instruction areas may be provided by embedding identifying bit patterns within computed control flow instructions contained in the instruction groups. In this way, control flow of the instruction areas may be provided, thus preventing diversion of control flow and minimizing required checks.