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. 02, 2005
Filed:
Jul. 07, 2000
Ronald Glen Feigen, Tempe, AZ (US);
Richard Allen Perona, Gilbert, AZ (US);
James T. Lynn, Mesa, AZ (US);
Erwin Perry Comer, Queen Creek, AZ (US);
Ronald Glen Feigen, Tempe, AZ (US);
Richard Allen Perona, Gilbert, AZ (US);
James T. Lynn, Mesa, AZ (US);
Erwin Perry Comer, Queen Creek, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The integrity of a remote communication unit () in a communication system is verified by comparing a hash value generated within the remote unit () to a hash value generated within a local unit (). An interrogation message is generated within an interrogating entity () that includes a random seed value, memory range information identifying a memory range within the remote unit that is to be hashed, and position information identifying a position at which the random seed value is to be located within a data stream generated within the remote unit (). The interrogation message is then delivered to the remote unit () which then performs a hashing operation based upon the parameters within the interrogation message to generate a hash value. The hash value is then returned to the interrogating entity () for comparison with a control value.