🔐The Safest Mnemonic Phrase Storage Solution: Shamir Backup
1⃣ Basic Definition
Shamir's Secret Sharing (SSS) is a cryptographic scheme that splits a mnemonic phrase/private key into multiple shards, and only by gathering a sufficient number of shards (e.g., 3 out of 5) can the complete key be restored.
Let's explain Shamir Backup in terms even elementary school students can understand
🌟 Imagine a treasure map game
Suppose you have an incredibly powerful secret code (like the password to a piggy bank), but you're afraid of losing it, so you come up with a clever solution:
Turn the code into a puzzle: you split the code into 5 small pieces of paper, with each piece only containing a part of the code.
Puzzle Rule: As long as you collect any 3 small pieces of paper (like piece 1 + piece 3 + piece 5), you can piece together the complete code! But with only 1 or 2 pieces, no one can guess it.
This is Shamir Backup! It splits the secret into many parts, and only by gathering the required number (like 3 parts) can it be restored; a few pieces alone are useless～
✅ Core Features:
Independent Shards: A single shard has no value and cannot derive the complete key
Flexible Configuration: Thresholds can be set (e.g., 3 out of 5 shards can restore)
Resistant to Physical Damage: Even if 1-2 shards are lost, security is not compromised
Risks
⚠ Shard Loss: If the actual number of shards < recovery threshold (e.g., 3 out of 5 lost 3 shards), assets are permanently locked
⚠ Pseudo-Random Vulnerability: If improper random number generation occurs during self-coding implementation, it may be cracked
⚠ Social Engineering Attacks: Hackers may deceive multiple shard holders into handing over their pieces
