Bip39 Seed Phrase. The wallet handles the significant lifting of converting the mnemonic words through a means of elaborate hashing, salting, and checksum functions into a binary "seed," which can be then utilized to crank out the all-critical private and general public encryption keys. BIP32 was the 1st seed standard https://simbadirectory.com/listings13033533/bip39-list-https-linktr-ee-bip39-getting-my-bip39-standalone-to-work