Bip39 Standard. The wallet handles the major lifting of changing the mnemonic words through a strategy of sophisticated hashing, salting, and checksum operations into a binary "seed," and that is then accustomed to make the all-essential personal and public encryption keys. Note: For anyone unfamiliar with cryptocurrencies, Vault12 refers to https://directoryrec.com/listings691649/bip39-passphrase-generator-https-linktr-ee-bip39-the-greatest-guide-to-bip39-tool