The good news is, in 2012 the developer Pieter Wuille established the BIP32 specification at The bottom in the hierarchical deterministic wallets. With each other with it, Pieter designed a mathematical functionality to create a master key from which to derive all other keys in a very deterministic way. In https://socialeweb.com/story4877957/the-basic-principles-of-bip39-passphrase-generator