We continue publishing articles on the principles of the threshold signature scheme. Previously we talked about the standard digital signature scheme (DSS), covered the main ideas behind the elliptic curve theory and provided a brief overview of the ECDSA algorithm. In this article we will introduce the concept of a threshold signature. Earlier, we discussed DSS and its most common implementation ECDSA: tools that allow us to create individual signatures. Now let’s figure out how a group of u...