Bip39 Brute Default number of iterations used in wallets is 2048. Raising this number must enable it to be safer towards brute power attacks, having said that you will need to retail store this value. To access your wallet with custom made PBKDF2 you ought to use this script (or https://bookmark-vip.com/story18725857/bitcoin-seed-phrase-generator-the-fact-about-bip39-phrase-that-no-one-is-suggesting