Bip39 Passphrase List Default variety of iterations Utilized in wallets is 2048. Raising this number should allow it to be more secure versus brute force attacks, however you will need to keep this value. To entry your wallet with custom made PBKDF2 you must use this script (or very similar) https://natural-bookmark.com/story18967179/bip39-encoding-considerations-to-know-about-seed-phrase-generator