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:
Mar. 01, 2011
Filed:
Feb. 20, 2001
Nicko Van Someren, Cambridge, GB;
Nicko Van Someren, Cambridge, GB;
nCipher Corporation Ltd., , GB;
Abstract
A computer system has a resource, a verification unit and an execution engine for running a body of program code having an associated signature. A cryptographic key is associated with the resource and when the code is to be loaded into the execution engine a verification operation is run on the signature using the cryptographic key associated with the resource. The execution engine is separate from the resource and when access to the resource is required by the code in the execution engine a further verification operation is conducted on the signature using the cryptographic key associated with the resource. Access to the resource by the code depends upon the result of the verification operation.