Create a secret
Secret limit: up to 3002 UTF-8 bytes (about 3000 ASCII characters).
Including the checksum helps verify recovered secrets, but it gives attackers a small offline
guess-check signal. Recovery still works without it, but the recovered content cannot be verified as
authentic.
Tip: Store shares with different trusted people. Any 3 can recover.
Recover the secret
Paste any 3 shares below. You can add more if needed.
Recovered secret
How it works
- Splits your secret into 7 cryptographic shares using Shamir's Secret Sharing (3-of-7).
- Shares never leave your browser. No server receives your secret.
- Any 3 shares can reconstruct the original secret. Fewer than 3 reveal nothing.