Patent · US Active

Method and system for registering digital documents

US11233657B2 · kind B2 · utility

2Cited by

1References

21Claims

0Family size

Assignee

ENIGIO TIME AB · SE

Inventors

Hans ALMGREN · Bissenkamp, SE
Lars Hansen · Munich, DE

Key dates

Filing date	May 3, 2018
Grant date	Jan 25, 2022
Priority date	—
Expiry date	Aug 7, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/50
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Method for registering an electronically stored digital document (A), comprising the steps of a) providing to an owning party a digital document and a private ownership key, which private ownership key is a private key in an asymmetric cryptographic key pair also comprising a corresponding public ownership key; b) calculating a digital document hash value based upon the document (A); c) the owning party using the private ownership key to calculate a digital document signature of the document (A); d) digitally storing in an electronic digital document register not the document (A), but the document signature as well as the public ownership key and the document hash value. The invention also relates to a system.

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