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:
Jul. 15, 2025
Filed:
Dec. 21, 2020
Dfinity Stiftung, Zürich, CH;
Jan Camenisch, Thalwil, CH;
Manu Drijvers, Zürich, CH;
Johan Granström, Kilchberg, CH;
Roman Kashitsyn, Pfäffikon, CH;
Gregory Neven, Oberrieden, CH;
Yvonne-Anne Pignolet, Zurich, CH;
Dominic Williams, Palo Alto, CA (US);
DFINITY STIFTUNG, Zurich, CH;
Abstract
Embodiments of the invention relate to a computer-implemented method for generating verification keys of a public-key signature scheme in a distributed network. The method comprises performing, by a subset of the nodes of a first subnetwork of nodes, a first distributed key generation protocol, the first distributed key generation protocol being configured to generate jointly a verification key for the first subnetwork and a plurality of corresponding secret key shares for the nodes of the first subnetwork. The method further comprises a step of performing, for a second subnetwork, by a subset of the plurality of nodes of the first subnetwork, a second distributed key generation protocol, the second distributed key generation protocol being configured to generate jointly a verification key of the second subnetwork and a plurality of corresponding secret key shares for the nodes of the second subnetwork. A further step comprises signing, by a subset of the nodes of the first subnetwork, the verification key of the second subnetwork with a permissible subset of the secret key shares of the nodes of the first subnetwork, thereby generating a joint signature on the verification key of the second subnetwork. Further aspects relate to a distributed network, a node of a distributed network and corresponding computer program products.