Ledger Seed Phrase Bip39 Default amount of iterations Employed in wallets is 2048. Increasing this amount should help it become safer against brute drive assaults, having said that you'll need to keep this worth. To accessibility your wallet with custom PBKDF2 you must use this script (or very similar) to https://bookmarkproduct.com/story18678818/bip39-checksum-calculator-considerations-to-know-about-seed-phrase-generator