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. 11, 2013
Filed:
Apr. 03, 2012
Andrew F. Fanton, Westminster, CO (US);
John J. Gandee, Loveland, CO (US);
William H. Lutton, Fort Collins, CO (US);
Edwin L. Harper, Platteville, CO (US);
Kurt E. Godwin, Loveland, CO (US);
Anthony A. Rozga, Wellington, CO (US);
Andrew F. Fanton, Westminster, CO (US);
John J. Gandee, Loveland, CO (US);
William H. Lutton, Fort Collins, CO (US);
Edwin L. Harper, Platteville, CO (US);
Kurt E. Godwin, Loveland, CO (US);
Anthony A. Rozga, Wellington, CO (US);
Fortinet, Inc., Sunnyvale, CA (US);
Abstract
Systems and methods for selective authorization of dependent code modules are provided. According to one embodiment, a kernel mode driver of a computer system intercepts file system or operating system activity, by a running process, relating to a dependent code module. Loading of the dependent code module is selectively authorized by authenticating a cryptographic hash value of the dependent code module with reference to a multi-level whitelist. The multi-level whitelist includes a global whitelist database remote from the computer system, maintained by a trusted service provider and which contains cryptographic hash values of approved code modules known not to contain viruses or malicious code; and a local whitelist database that includes cryptographic hash values of a subset of the approved code modules. The running process is allowed to load the dependent code module when the cryptographic hash value matches one of the cryptographic hash values of the approved code modules.