Bip39 Vs Default amount of iterations Employed in wallets is 2048. Growing this variety ought to ensure it is safer versus brute force attacks, nevertheless you will need to retail store this value. To accessibility your wallet with custom made PBKDF2 it is best to use this script (or similar) https://cruxbookmarks.com/story18567963/bip39-one-helping-the-others-realize-the-advantages-of-seed-phrase-generator