```text MMGEN-PASSGEN: Generate a range or list of passwords from an MMGen wallet, mnemonic, seed or brainwallet for the given ID string USAGE: mmgen-passgen [opts] [seed source] OPTIONS: -h, --help Print this help message --longhelp Print help message for long (global) options -d, --outdir d Output files to directory 'd' instead of working dir -e, --echo-passphrase Echo passphrase or mnemonic to screen upon entry -f, --passwd-fmt f Generate passwords of format 'f'. Default: b58. See PASSWORD FORMATS below -i, --in-fmt f Input is from wallet format 'f' (see FMT CODES below) -H, --hidden-incog-input-params f,o Read hidden incognito data from file 'f' at offset 'o' (comma-separated) -O, --old-incog-fmt Specify old-format incognito input -L, --passwd-len l Specify length of generated passwords. For defaults, see PASSWORD FORMATS below. An argument of 'h' will generate passwords of half the default length. -l, --seed-len l Specify wallet seed length of 'l' bits. This option is required only for brainwallet and incognito inputs with non-standard (< 256-bit) seed lengths. -p, --hash-preset p Use the scrypt hash parameters defined by preset 'p' for password hashing (default: '3') -z, --show-hash-presets Show information on available hash presets -P, --passwd-file f Get wallet passphrase from file 'f' -q, --quiet Produce quieter output; suppress some warnings -r, --usr-randchars n Get 'n' characters of additional randomness from user (min=10, max=80, default=30) -S, --stdout Print passwords to stdout -v, --verbose Produce more verbose output NOTES FOR THIS COMMAND ID string must be a valid UTF-8 string not longer than 256 characters and not containing the symbols ' ", ":", "/", "\'. Password indexes are given as a comma-separated list and/or hyphen-separated range(s). Changing either the password format (base32,base58) or length alters the seed and thus generates a completely new set of passwords. PASSWORD FORMATS: Code Description Min Len Max Len Default Len b32 - base32 password 10 42 24 b58 - base58 password 8 36 20 bip39 - BIP39 mnemonic 12 24 24 xmrseed - Monero new-style mnemonic 25 25 25 hex - hexadecimal password 32 64 64 EXAMPLES: Generate ten base58 passwords of length 20 for Alice's email account: mmgen-passgen alice@nowhere.com 1-10 Generate ten base58 passwords of length 16 for Alice's email account: mmgen-passgen --passwd-len=16 alice@nowhere.com 1-10 Generate ten base32 passwords of length 24 for Alice's email account: mmgen-passgen --passwd-fmt=b32 alice@nowhere.com 1-10 Generate three BIP39 mnemonic seed phrases of length 24 for Alice's Trezor device: mmgen-passgen --passwd-fmt=bip39 mytrezor 1-3 All passwords are cryptographically unlinkable with each other, including passwords with the same format but different length, so Alice needn't worry about inadvertent reuse of private data. NOTES FOR ALL GENERATOR COMMANDS PASSPHRASE NOTE: For passphrases all combinations of whitespace are equal, and leading and trailing space are ignored. This permits reading passphrase or brainwallet data from a multi-line file with free spacing and indentation. BRAINWALLET NOTE: To thwart dictionary attacks, it’s recommended to use a strong hash preset with brainwallets. For a brainwallet passphrase to generate the correct seed, the same seed length and hash preset parameters must always be used. FMT CODES: Format FileExt Valid codes ------ ------- ----------- BIP39Mnemonic .bip39 bip39 Brainwallet .mmbrain mmbrain,brainwallet,brain,bw DieRollWallet .b6d b6d,die,dieroll IncogWallet .mmincog mmincog,incog,icg,i IncogWalletHex .mmincox mmincox,incox,incog_hex,ix,xi IncogWalletHidden None incog_hidden,hincog,ih,hi MMGenHexSeedFile .mmhex seedhex,hexseed,mmhex MMGenMnemonic .mmwords mmwords,words,mnemonic,mn,m MMGenSeedFile .mmseed mmseed,seed,s MMGenWallet .mmdat wallet,w PlainHexSeedFile .hex hex,rawhex,plainhex MMGEN v15.1.dev18 March 2025 MMGEN-PASSGEN(1) ```