143 lines
5.2 KiB
Python
Executable file
143 lines
5.2 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
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# Copyright (C) 2013 by philemon <mmgen-py@yandex.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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mmgen-walletchk: Check integrity of a mmgen deterministic wallet, display
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information about it and export seed and mnemonic data
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"""
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import sys
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from mmgen.Opts import *
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from mmgen.util import *
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help_data = {
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'prog_name': sys.argv[0].split("/")[-1],
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'desc': """Check integrity of a %s deterministic wallet, display
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its information and export seed and mnemonic data."""\
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% g.proj_name,
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'usage': "[opts] [filename]",
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'options': """
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-h, --help Print this help message
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-d, --outdir d Specify an alternate directory 'd' for output
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-e, --echo-passphrase Print passphrase to screen when typing it
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-P, --passwd-file f Get passphrase from file 'f'
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-q, --quiet Suppress warnings; overwrite files without prompting
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-S, --stdout Print seed or mnemonic data to standard output
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-v, --verbose Produce more verbose output
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-g, --export-incog Export wallet to incognito format
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-X, --export-incog-hex Export wallet to incognito hexadecimal format
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-G, --export-incog-hidden f,o Hide incognito data in existing file 'f'
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at offset 'o' (comma-separated)
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-m, --export-mnemonic Export the wallet's mnemonic to file
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-s, --export-seed Export the wallet's seed to file
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"""
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}
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short_opts = "hd:eP:qSvgXG:ms"
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long_opts = "help","outdir=","echo_passphrase","passwd_file=","quiet",\
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"stdout","verbose",\
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"export_incog","export_incog_hex","export_incog_hidden=",\
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"export_mnemonic","export_seed"
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opts,cmd_args = process_opts(sys.argv,help_data,short_opts,long_opts)
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if 'quiet' in opts: g.quiet = True
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if 'verbose' in opts: g.verbose = True
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if 'export_incog_hidden' in opts or 'export_incog_hex' in opts:
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opts['export_incog'] = True
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# Argument sanity checks and processing:
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check_opts(opts,long_opts)
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if len(cmd_args) != 1: usage(help_data)
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check_infile(cmd_args[0])
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if 'export_mnemonic' in opts:
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qmsg("Exporting mnemonic data to file by user request")
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elif 'export_seed' in opts:
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qmsg("Exporting seed data to file by user request")
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elif 'export_incog' in opts:
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qmsg("Exporting wallet to incognito format by user request")
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d = get_data_from_wallet(cmd_args[0],silent=True)
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seed_id,key_id,preset,salt,enc_seed = \
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d[1][0], d[1][1], d[2].split(":")[0], d[3], d[4]
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passwd = get_mmgen_passphrase("Enter mmgen passphrase: ",opts)
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key = make_key(passwd, salt, preset, "main key")
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# We don't need the seed; just do this to verify password.
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if decrypt_seed(enc_seed, key, seed_id, key_id) == False:
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sys.exit(2)
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from Crypto import Random
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iv = Random.new().read(g.aesctr_iv_len)
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iv_id = make_chksum_8(iv)
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qmsg("IV ID: %s" % iv_id)
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from binascii import hexlify
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from hashlib import sha256
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# IV is used BOTH to initialize counter and to salt password!
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key = make_key(passwd, iv, preset, "wrapper key")
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incog_enc = encrypt_seed(salt + enc_seed, key, iv=int(hexlify(iv),16))
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if "export_incog_hidden" in opts:
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fname,offset = opts['export_incog_hidden'].split(",") #Already sanity-checked
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offset = int(offset)
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check_data_fits_file_at_offset(fname,offset,len(iv + incog_enc),"write")
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if not g.quiet: confirm_or_exit("","alter file '%s'" % fname)
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f = os.open(fname,os.O_RDWR)
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os.lseek(f, offset, os.SEEK_SET)
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os.write(f, iv + incog_enc)
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os.close(f)
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qmsg("Data written to file '%s' at offset %s" % (fname,offset),
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"Data written to file")
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else:
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fn = "%s-%s-%s[%s,%s].%s" % (
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seed_id, key_id, iv_id, len(enc_seed)*8, preset,
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g.incog_hex_ext if "export_incog_hex" in opts else g.incog_ext
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)
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data = iv + incog_enc
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if "export_incog_hex" in opts:
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data = "".join([hexlify(data[i*2:i*2+2]) + (" " if (i+1)%8 else "\n")
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for i in range(len(data)/2)])
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export_to_file(fn, data, "incognito wallet data", opts)
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sys.exit()
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seed = get_seed_from_wallet(cmd_args[0], opts)
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if seed: qmsg("Wallet is OK")
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else:
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msg("Error opening wallet")
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sys.exit(2)
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if 'export_mnemonic' in opts:
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wl = get_default_wordlist()
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from mmgen.mnemonic import get_mnemonic_from_seed
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p = True if g.debug else False
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mn = get_mnemonic_from_seed(seed, wl, g.default_wl, print_info=p)
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fn = "%s.%s" % (make_chksum_8(seed).upper(), g.mn_ext)
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export_to_file(fn, " ".join(mn)+"\n", "mnemonic data", opts)
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elif 'export_seed' in opts:
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from mmgen.bitcoin import b58encode_pad
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data = col4(b58encode_pad(seed))
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chk = make_chksum_6(b58encode_pad(seed))
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fn = "%s.%s" % (make_chksum_8(seed).upper(), g.seed_ext)
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export_to_file(fn, "%s %s\n" % (chk,data), "seed data", opts)
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