Try it out here
This utility will split a BIP39 seed phrase in 2 parts.
It uses a XOR operation to combine a One-time pad with the seed, resulting in 2 new seed phrases. Having just one part won't provide an attacker any useful information - both are required to regenerate the original seed phrase.
How is this useful ? Here's a few examples:
- Store one part at home, store one part at work,
- Store one part in a password manager, store one part in a safe on paper,
- Keep one part in your wallet, keep one part at your parent's house. etc.
Better yet, create 3 different split keys and do all 3.
Michael McMaster @mmcmaster-au Michael.McMaster@gmail.com