Patent ID: 11875340
Assignee: NCHAIN LICENSING AG
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The computer-implemented method claimed in claim 5, wherein calculating the second term includes:
obtaining a share of a value, wherein each of the output nodes has a respective share of the value;
obtaining a threshold number of fourth terms by calculating a fourth term and receiving further fourth terms from other output nodes, each fourth term being a term of a fourth Lagrange polynomial interpolation that includes a value derived from a share of the respective node; and
calculating a reciprocal value using said fourth terms, wherein each of the output nodes calculates a respective reciprocal value;
wherein said term of the second Lagrange polynomial interpolation includes a reciprocal value of the respective node, a key share of the respective node, and the shared secret.