Patent ID: 11870914
Assignee: NCHAIN LICENSING AG
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A computing device for participating in joint generation of a digital signature by distributed nodes in a computing network, the computing network including a set of at least 2t+1 nodes including the computing device, where t>1, wherein the digital signature is generated by joint participation of at least t+1 of the nodes in the set, wherein each of the nodes has a shared value r, and wherein the digital signature is of the form (r, s), the computing device comprising:
one or more processing units; and
memory storing processor-executable instructions for carrying out a single-round signature phase, wherein the instructions, when executed by the one or more processing unites, are to cause the one or more processing units to:
receive, by the computing device, a request for a signature share, s1, from a coordinating node;
calculate, at the computing device, the signature share, s1; and
transmit, from the computing device to the coordinating node, a response to the request containing at least the signature share, s1,
wherein the computing device and the coordinating node do not exchange communications relating to generation of the digital signature other than the request for the signature share and the response to the request during the single-round signature phase, and whereby the coordinating node generates the digital signature through interpolation over at least t+1 but fewer than 2t+1 respective signature shares from the at least t+1 nodes.