Recovery Share

Overview

A share may come from Shamir secret sharing, multi-party computation, threshold signing, a guardian scheme, or a provider-specific backup design. A required threshold of compatible shares can restore authority while fewer shares should remain insufficient.

Shares are not interchangeable across schemes and may include identifiers, group information, checksums, or encryption. Losing too many blocks recovery, while gathering the threshold in one place recreates the original concentration risk. Partial exposure can also reveal metadata even when the secret remains protected.

Owners should document the scheme, threshold, share holders, format, dependencies, replacement, and recovery process. Shares should be stored independently with clear but discreet identification. Periodic checks should confirm availability without combining production shares unnecessarily. After actual reconstruction, teams should consider generating a new secret and redistributing fresh shares.

Evidence for Recovery Share should preserve incident time, affected identifiers, last known state, claimant and approver checks, backup or share version, actions performed, credentials revoked, assets verified, discrepancies found, and final owner acceptance. For Recovery Share, sensitive recovery material must not appear in the incident record.

Recovery Share differs from ordinary retry or customer support because it restores authority after a control failure. For example, reinstalling an application is not successful recovery until the correct accounts, networks, balances, policies, and transaction history are reproduced and compromised authority can no longer act.

A controlled Recovery Share process moves through detection, containment, claimant verification, approval, restoration, validation, credential or guardian replacement, reconciliation, and closure. For Recovery Share, emergency access should be time-limited and should not silently weaken the authorization policy used during normal operation.