FAQ
Bip32 key derivation
Why don't you use standard Key derivation function PBKDF2?
PBKDF2 (Password-Based Key Derivation Function 2) is designed for password inputs. We don't input password, but a long, random number. Even more importantly, it does not offer derivation of public/private keypairs. Bip32 does.
Bip32 is used in deterministic (bitcoin) wallets. How does your scheme relate to that?
Key derivation process is the same, usage of key-pair is different;
We can then safely sync MasterPublicKey between devices. Even if it gets leaked... it's Public key, it can not expose anything.
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