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:
Sep. 01, 2015
Filed:
Apr. 30, 2014
Guardtime Ip Holdings Limited, Tortola, VG;
Ahto Buldas, Tallinn, EE;
Märt Saarepera, Tallinn, EE;
GUARDTIME IP HOLDINGS LIMITED, Tortola, VG;
Abstract
Transformations of digital records are used as lowest level inputs to a tree data structure having a root in a core system and having nodes computed as digital combinations of child node values. Signature vectors are associated with the digital records and have parameters that enable recomputation upward through the tree data structure to either a current calendar value or onward to a composite calendar value that is a function of calendar values in a calendar, which comprises a set of computed calendar values, such that the calendar values have a time correspondence. Recomputation yields the same value only if a candidate digital record is an exact version of the original digital record included in the original computation of the value, indicating authentication of the candidate digital record. The authentication process as such is independent of any trust authority that issues cryptographic keys.