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. 13, 2017
Filed:
Mar. 26, 2014
Applicant:
Cloudtomo Limited, Edinburgh, GB;
Inventor:
Mark Ryan, Birmingham, GB;
Assignee:
CloudTomo Limited, Edinburgh, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01); H04L 29/06 (2006.01); G06F 21/33 (2013.01); G06F 21/45 (2013.01);
U.S. Cl.
CPC ...
H04L 9/3268 (2013.01); G06F 21/33 (2013.01); G06F 21/45 (2013.01); H04L 9/3265 (2013.01); H04L 63/0823 (2013.01);
Abstract
Methods and systems for public-key certificate management comprise storing digital certificates in data structures that allow the manager to provide a verifiable proof about the validity status of a certificate. The certificates are stored in two data structures in a database. One data structure stores items in chronological order and is queried to establish a proof that a later snapshot of the database is an extension of an earlier snapshot of the database. Another data structure is ordered by user identifier and is queried to establish a proof that a given digital certificate is currently valid.