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command-help-txsign
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MMGEN-TXSIGN: Sign cryptocoin transactions generated by mmgen-txcreate
USAGE: mmgen-txsign [opts] <transaction file>... [seed source]...
OPTIONS:
-h, --help Print this help message
--longhelp Print help message for long options (common options)
-b, --brain-params l,p Use seed length 'l' and hash preset 'p' for
brainwallet input
-d, --outdir d Specify an alternate directory 'd' for output
-D, --tx-id Display transaction ID and exit
-e, --echo-passphrase Print passphrase to screen when typing it
-E, --use-internal-keccak-module Force use of the internal keccak module
-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, --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
-k, --keys-from-file f Provide additional keys for non-MMGen addresses
-K, --keygen-backend n Use backend 'n' for public key generation. Options
for BTC: 1:libsecp256k1 [default] 2:python-ecdsa
-M, --mmgen-keys-from-file f Provide keys for MMGen addresses in a key-
address file (output of 'mmgen-keygen'). Permits
online signing without an MMGen seed source. The
key-address file is also used to verify MMGen-to-BTC
mappings, so the user should record its checksum.
-P, --passwd-file f Get MMGen wallet passphrase from file 'f'
-q, --quiet Suppress warnings; overwrite files without prompting
-I, --info Display information about the transaction and exit
-t, --terse-info Like '--info', but produce more concise output
-u, --subseeds n The number of subseed pairs to scan for (default: 100,
maximum: 1000000). Only the default or first supplied
wallet is scanned for subseeds.
-v, --verbose Produce more verbose output
-V, --vsize-adj f Adjust transaction's estimated vsize by factor 'f'
-y, --yes Answer 'yes' to prompts, suppress non-essential output
Transactions may contain both MMGen or non-MMGen input addresses.
To sign non-MMGen inputs, a bitcoind wallet dump or flat key list is used
as the key source (--keys-from-file option).
To sign MMGen inputs, key data is generated from a seed as with the
mmgen-addrgen and mmgen-keygen commands. Alternatively, a key-address file
may be used (--mmgen-keys-from-file option).
Multiple wallets or other seed files can be listed on the command line in
any order. If the seeds required to sign the transaction’s inputs are not
found in these files (or in the default wallet), the user will be prompted
for seed data interactively.
To prevent an attacker from crafting transactions with bogus MMGen-to-Bitcoin
address mappings, all outputs to MMGen addresses are verified with a seed
source. Therefore, seed files or a key-address file for all MMGen outputs
must also be supplied on the command line if the data can’t be found in the
default wallet.
Seed source files must have the canonical extensions listed in the 'FileExt'
column below:
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 v15.0.0 September 2024 MMGEN-TXSIGN(1)
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