Patent · US Active

Document verification with ID augmentation

US9473306B2 · kind B2 · utility

4Cited by

2References

13Claims

0Family size

Assignee

Guardtime IP Holdings Limited · VG

Inventors

Ahto Buldas · Tallinn, EE
Ahto Truu · Tartu, EE
Andres Kroonmaa · Keila, EE

Key dates

Filing date	Aug 5, 2013
Grant date	Oct 18, 2016
Priority date	—
Expiry date	Oct 13, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/3239
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

At least one node in a distributed hash tree document verification infrastructure is augmented with an identifier of an entity in a registration path. A data signature, which includes parameters for recomputation of a verifying value, and which is associated with a digital input record, will therefore also include data that identifies at least one entity in the hash tree path used for its initial registration in the infrastructure.

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