Patent · US Active

Multisigning—a protocol for robust multiple party digital signatures

US8321680B2 · kind B2 · utility

13Cited by

6References

22Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Alexander Gantman · Poway, US
Aram Perez · San Diego, US
Gregory G. Rose · Mortlake, AU
Laurence Lundblade · San Diego, US
Matthew W. Hohfeld · San Diego, US
Michael Paddon · Parramatta, AU
Oliver Michaelis · San Diego, US
Ricardo Jorge Lopez · San Marcos, US

Key dates

Filing date	Dec 9, 2010
Grant date	Nov 27, 2012
Priority date	—
Expiry date	Dec 9, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/80
WIPO fieldDigital communication
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.