1 files changed, 0 insertions, 141 deletions
diff --git a/fw/hid-dials/tools/presig_gen.py b/fw/hid-dials/tools/presig_gen.py
deleted file mode 100644
index c5dafe7..0000000
--- a/fw/hid-dials/tools/presig_gen.py
+++ /dev/null
@@ -1,141 +0,0 @@
-#!/usr/bin/env python3
-
-import os
-import sys
-import textwrap
-import uuid
-import hmac
-import binascii
-import time
-from datetime import datetime
-
-LINKING_KEY_SIZE = 15
-PRESIG_VERSION = '000.001'
-DOMAINS = ['all', 'country', 'region', 'vendor', 'series']
-
-def format_hex(data, indent=4, wrap=True):
-    indent = ' '*indent
-    par = ', '.join(f'0x{b:02x}' for b in data)
-    par = textwrap.fill(par, width=120,
-        initial_indent=indent, subsequent_indent=indent,
-        replace_whitespace=False, drop_whitespace=False)
-    if wrap:
-        return f'{{\n{par}\n}}'
-    return par
-
-def domain_string(domain, value):
-    return f'smart reset domain string v{PRESIG_VERSION}: domain:{domain}={value}'
-
-def keygen_cmd(args):
-    if os.path.exists(args.keyfile) and not args.force:
-        print("Error: keyfile already exists. We won't overwrite it. Instead please remove it manually.",
-                file=sys.stderr)
-        return 1
-
-    root_key = os.urandom(LINKING_KEY_SIZE)
-
-    with open(args.keyfile, 'wb') as f:
-        f.write(binascii.hexlify(root_key))
-        f.write(b'\n')
-    return 0
-
-def gen_at_height(domain, value, height, key):
-    # nanananananana BLOCKCHAIN!
-
-    ds = domain_string(domain, value).encode('utf-8')
-
-    for height in range(height+1):
-        key = hmac.digest(key, ds, 'sha512')[:LINKING_KEY_SIZE]
-
-    return key
-
-def auth_cmd(args):
-    with open(args.keyfile, 'r') as f:
-        root_key = binascii.unhexlify(f.read().strip())
-
-    vals = [ (domain, getattr(args, domain)) for domain in DOMAINS if getattr(args, domain) is not None ]
-    if not vals:
-        vals = [('all', 'all')]
-    for domain, value in vals:
-        auth = gen_at_height(domain, value, args.height, root_key)
-        print(f'{domain}="{value}" @{args.height}: {binascii.hexlify(auth).decode()}')
-
-
-def prekey_cmd(args):
-    with open(args.keyfile, 'r') as f:
-        root_key = binascii.unhexlify(f.read().strip())
-
-    print('#include <stdint.h>')
-    print('#include <assert.h>')
-    print()
-    print('#include "crypto.h"')
-    print()
-
-    bundle_id = uuid.uuid4().bytes
-    print(f'/* bundle id {binascii.hexlify(bundle_id).decode()} */')
-    print(f'uint8_t presig_bundle_id[16] = {format_hex(bundle_id)};')
-    print()
-    print(f'/* generated on {datetime.now()} */')
-    print(f'uint64_t bundle_timestamp = {int(time.time())};')
-    print()
-    print(f'int presig_height = {args.max_height};')
-    print()
-
-    print('const char *presig_domain_strings[_TRIGGER_DOMAIN_COUNT] = {')
-    for domain in DOMAINS:
-        ds = domain_string(domain, getattr(args, domain))
-        assert '"' not in ds
-        print(f'    [TRIGGER_DOMAIN_{domain.upper()}] = "{ds}",')
-    print('};')
-    print()
-
-    print('uint8_t presig_keys[_TRIGGER_DOMAIN_COUNT][PRESIG_MSG_LEN] = {')
-    for domain in DOMAINS:
-        key = gen_at_height(domain, getattr(args, domain), args.max_height, root_key)
-        print(f'    [TRIGGER_DOMAIN_{domain.upper()}] = {{{format_hex(key, indent=0, wrap=False)}}},')
-    print('};')
-
-    print()
-    print('static inline void __hack_asserts_only(void) {')
-    print(f'    static_assert(_TRIGGER_DOMAIN_COUNT == {len(DOMAINS)});')
-    print(f'    static_assert(PRESIG_MSG_LEN == {LINKING_KEY_SIZE});')
-    print('}')
-    print()
-
-
-
-TEST_VENDOR = 'Darthenschmidt Cyberei und Verschleierungstechnik GmbH'
-TEST_SERIES = 'Frobnicator v0.23.7'
-TEST_REGION = 'Neuland'
-TEST_COUNTRY = 'Germany'
-
-if __name__ == '__main__':
-    import argparse
-    parser = argparse.ArgumentParser()
-    parser.add_argument('keyfile', help='Key file to use')
-
-    subparsers = parser.add_subparsers(title='subcommands')
-    keygen_parser = subparsers.add_parser('keygen', help='Generate a new key')
-    keygen_parser.add_argument('-f', '--force', action='store_true', help='Force overwriting existing keyfile')
-    keygen_parser.set_defaults(func=keygen_cmd)
-
-    auth_parser = subparsers.add_parser('auth', help='Generate one-time authentication string')
-    auth_parser.add_argument('height', type=int, help='Authentication string height, counting from 0 (root key)')
-    auth_parser.set_defaults(func=auth_cmd)
-    auth_parser.add_argument('-a', '--all', action='store_const', const='all', help='Vendor name for vendor domain')
-    auth_parser.add_argument('-v', '--vendor', type=str, nargs='?', const=TEST_VENDOR, help='Vendor name for vendor domain')
-    auth_parser.add_argument('-s', '--series', type=str, nargs='?', const=TEST_SERIES, help='Series identifier for series domain')
-    auth_parser.add_argument('-r', '--region', type=str, nargs='?', const=TEST_REGION, help='Region name for region domain')
-    auth_parser.add_argument('-c', '--country', type=str, nargs='?', const=TEST_COUNTRY, help='Country name for country domain')
-
-    prekey_parser = subparsers.add_parser('prekey', help='Generate prekey data .C source code file')
-    prekey_parser.add_argument('-m', '--max-height', type=int, default=8, help='Height of generated prekey')
-    prekey_parser.add_argument('-v', '--vendor', type=str, default=TEST_VENDOR, help='Vendor name for vendor domain')
-    prekey_parser.add_argument('-s', '--series', type=str, default=TEST_SERIES, help='Series identifier for series domain')
-    prekey_parser.add_argument('-r', '--region', type=str, default=TEST_REGION, help='Region name for region domain')
-    prekey_parser.add_argument('-c', '--country', type=str, default=TEST_COUNTRY, help='Country name for country domain')
-    prekey_parser.set_defaults(func=prekey_cmd, all='all')
-
-    args = parser.parse_args()
-    sys.exit(args.func(args))
-