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:
Nov. 27, 2012
Filed:
Dec. 09, 2010
Alexander Gantman, Poway, CA (US);
Aram Perez, San Diego, CA (US);
Gregory G. Rose, San Diego, CA (US);
Laurence G. Lundblade, San Diego, CA (US);
Matthew W. Hohfeld, San Diego, CA (US);
Michael W. Paddon, Tokyo, JP;
Oliver Michaelis, San Diego, CA (US);
Ricardo Jorge Lopez, San Marcos, CA (US);
Alexander Gantman, Poway, CA (US);
Aram Perez, San Diego, CA (US);
Gregory G. Rose, San Diego, CA (US);
Laurence G. Lundblade, San Diego, CA (US);
Matthew W. Hohfeld, San Diego, CA (US);
Michael W. Paddon, Tokyo, JP;
Oliver Michaelis, San Diego, CA (US);
Ricardo Jorge Lopez, San Marcos, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Embodiments describe a system and/or method for multiple party digital signatures. According to a first aspect a method comprises establishing a first validity range for a first key, establishing a first validity range for at least a second key, and determining if the validity range of the first key overlaps the first validity range of the at least a second key. A certificate is signed with the first validity range of the first key and the first validity range of the at least a second key if the validity ranges overlap. According to another embodiment, signage of the certificate is refused if the first validity range of the first key does not overlap with the first validity range of the at least a second key.