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#!/usr/bin/env python3
import argparse
import hashlib
import json
import os
import re
from concurrent.futures import ProcessPoolExecutor
from umskt.umskt import add_points, decode_pkey, scalar_mult
VALID_CHARACTERS = set("BCDFGHJKMPQRTVWXY2346789")
KEY_FORMAT = re.compile(
r"^[A-Z0-9]{5}-[A-Z0-9]{5}-[A-Z0-9]{5}-[A-Z0-9]{5}-[A-Z0-9]{5}$"
)
XP_BINKS = [
"2E", # XP Pro VLK
"2C", # XP Pro Retail
"2D", # XP Pro OEM
"2A", # XP Home Retail
"2B", # XP Home OEM
"64", # XP Pro 64-bit VLK
"66", # XP Pro 64-bit
"65", # XP Pro 64-bit VLK OEM
"67", # XP Pro 64-bit OEM
]
BINK_NAMES = {
"2E": "XP Pro VLK",
"2C": "XP Pro Retail",
"2D": "XP Pro OEM",
"2A": "XP Home Retail",
"2B": "XP Home OEM",
"64": "XP Pro 64-bit VLK",
"66": "XP Pro 64-bit",
"65": "XP Pro 64-bit VLK OEM",
"67": "XP Pro 64-bit OEM",
}
def int_to_bytes(value, length):
return value.to_bytes(length, byteorder="little")
def load_bink_data(keysfile):
with open(keysfile) as file:
return json.load(file)
def verify_key(raw_product_key, bink_data):
prime = int(bink_data["p"])
curve_a = int(bink_data["a"])
generator = (int(bink_data["g"]["x"]), int(bink_data["g"]["y"]))
public_key = (int(bink_data["pub"]["x"]), int(bink_data["pub"]["y"]))
coordinate_length = (prime.bit_length() + 7) // 8
product_id = (raw_product_key & 0x7FFFFFFF) >> 1
hash_value = (raw_product_key >> 31) & 0xFFFFFFF
signature = raw_product_key >> 59
if signature == 0:
return False
# verification_point = (signature * generator) + (hash_value * public_key)
signature_component = scalar_mult(signature, generator, prime, curve_a)
hash_component = scalar_mult(hash_value, public_key, prime, curve_a)
verification_point = add_points(signature_component, hash_component, prime, curve_a)
if verification_point is None:
return False
point_x, point_y = verification_point
digest = hashlib.sha1(
int_to_bytes(product_id << 1, 4)
+ int_to_bytes(point_x, coordinate_length)
+ int_to_bytes(point_y, coordinate_length)
).digest()
computed_hash = int.from_bytes(digest[:4], byteorder="little") >> 4
computed_hash &= 0xFFFFFFF
return hash_value == computed_hash
def verify_key_against_all_binks(entry, bink_database):
key = entry["key"]
if not KEY_FORMAT.match(key):
entry["reason"] = "malformed format"
return "invalid_format", entry
stripped_key = key.replace("-", "")
invalid_chars = sorted(set(stripped_key) - VALID_CHARACTERS)
if invalid_chars:
entry["reason"] = f"invalid character(s): {', '.join(invalid_chars)}"
return "invalid_format", entry
raw_product_key = decode_pkey(key)
for bink_id in XP_BINKS:
if bink_id not in bink_database["BINK"]:
continue
if verify_key(raw_product_key, bink_database["BINK"][bink_id]):
entry["bink"] = f"{bink_id} ({BINK_NAMES[bink_id]})"
return "valid", entry
entry["reason"] = "ECDSA signature verification failed"
return "invalid_signature", entry
def validate_keys(keys_file="keys.json"):
script_directory = os.path.dirname(os.path.abspath(__file__))
bink_file = os.path.join(script_directory, "umskt", "umskt", "keys.json")
bink_database = load_bink_data(bink_file)
with open(keys_file, "r") as file:
data = json.load(file)
entries = []
for edition in data["editions"].values():
for category in edition["categories"].values():
for key in category["keys"]:
entries.append(
{
"key": key,
"edition": edition["name"],
"category": category["name"],
}
)
results = {"valid": [], "invalid_format": [], "invalid_signature": []}
with ProcessPoolExecutor() as executor:
futures = [
executor.submit(verify_key_against_all_binks, entry, bink_database)
for entry in entries
]
for future in futures:
category, entry = future.result()
results[category].append(entry)
return results
def generate_report(results):
total = (
len(results["valid"])
+ len(results["invalid_format"])
+ len(results["invalid_signature"])
)
lines = []
lines.append("# Summary\n")
lines.append(f"- Validated: {total}")
lines.append(f"- Valid: {len(results['valid'])}")
lines.append(f"- Invalid format: {len(results['invalid_format'])}")
lines.append(f"- Invalid signature: {len(results['invalid_signature'])}")
if results["valid"]:
lines.append(f"\n## Valid ({len(results['valid'])})\n")
for entry in results["valid"]:
lines.append(f"- {entry['key']} ({entry['bink']})")
if results["invalid_format"]:
lines.append(f"\n## Invalid format ({len(results['invalid_format'])})\n")
for entry in results["invalid_format"]:
lines.append(f"- {entry['key']} ({entry['reason']})")
if results["invalid_signature"]:
lines.append(f"\n## Invalid signature ({len(results['invalid_signature'])})\n")
for entry in results["invalid_signature"]:
lines.append(f"- {entry['key']} ({entry['edition']} / {entry['category']})")
return "\n".join(lines) + "\n"
def remove_invalid_keys(keys_file, results):
invalid_keys = {entry["key"] for entry in results["invalid_format"]} | {
entry["key"] for entry in results["invalid_signature"]
}
with open(keys_file, "r") as file:
data = json.load(file)
removed = 0
for edition in data["editions"].values():
for category in edition["categories"].values():
original_count = len(category["keys"])
category["keys"] = [
key for key in category["keys"] if key not in invalid_keys
]
removed += original_count - len(category["keys"])
with open(keys_file, "w") as file:
json.dump(data, file, indent=2, ensure_ascii=False)
file.write("\n")
return removed
if __name__ == "__main__":
parser = argparse.ArgumentParser(description="Validate Windows XP product keys")
parser.add_argument(
"--clean",
action="store_true",
help="remove invalid keys from keys.json",
)
arguments = parser.parse_args()
results = validate_keys()
report = generate_report(results)
with open("report.md", "w") as file:
file.write(report)
print("Generated report.md")
if arguments.clean:
removed = remove_invalid_keys("keys.json", results)
print(f"Removed {removed} invalid keys from keys.json")
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