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Disenrollment of Parties in Secret Shares

Within a secret share infrastructure, we have a number of parties, and which receive secret shares. When we bring back these shares, we can rebuild a secret value (such as encryption key). But, what happens when you need to disenroll parties from the secret share? For this, we need to redeal the shares, without revealing the original share. So, let’s look at a basic disenrollment scheme.