Bip39. The wallet handles the major lifting of converting the mnemonic words via a strategy of intricate hashing, salting, and checksum operations right into a binary "seed," which happens to be then utilized to create the all-essential private and general public encryption keys. For words that have only 3 letters, https://webtechdirectory.com/listings13017547/bip39-seed-https-linktr-ee-bip39-a-secret-weapon-for-bip39-npm