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.

Date of Patent:
Jul. 05, 2022

Filed:

Aug. 13, 2018
Applicant:

Nchain Holdings Limited, St. John's, AG;

Inventor:

Craig Steven Wright, London, GB;

Assignee:

nChain Holdings Ltd., St. John's, AG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04L 9/06 (2006.01); H04L 9/30 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
H04L 9/085 (2013.01); H04L 9/0637 (2013.01); H04L 9/088 (2013.01); H04L 9/3066 (2013.01); H04L 9/3236 (2013.01); H04L 9/3252 (2013.01); H04L 9/3255 (2013.01); H04L 2209/38 (2013.01);
Abstract

A method and devices for securely and privately generating a threshold vault address and distributed individual key shares reliant upon individually selected polynomial functions, without revealing the key shares and without ever reconstructing the private key. A digital asset stored at the threshold vault address may be used as an input to a transaction through generating a digital signature corresponding to the threshold vault address. Methods and devices are described for collaboratively generating the digital signature without reconstructing the private key or revealing individual key shares. Methods and devices are described for refreshing the distributed private key shares.


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