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Shamir's Secret Sharing
custody.shamirs-secret-sharing
Shamir's Secret Sharing splits one secret into multiple shares so that any chosen threshold can reconstruct it, while fewer shares reveal nothing useful. In Bitcoin custody it is commonly used for seed backups when operators want threshold recovery without handing one full secret to any single location.
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Curated resources (3)
- How to Share a Secret (article) Adi Shamir's original paper introducing threshold secret sharing with polynomial reconstruction over finite fields.
- SLIP-0039: Shamir's Secret-Sharing for Mnemonic Codes (article) Official wallet-backup specification showing how Shamir sharing is applied to mnemonic secrets in Bitcoin-adjacent practice.
- Mastering Bitcoin (book) Broad technical reference for seed material, wallet backup context, and the surrounding custody tradeoffs.
Direct prerequisites (1)
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