Decrypt Matrix key export file

decrypt_key_export.py

#!/usr/bin/env python3

import asyncio
import getpass
import json
import os
import sys

import nio

KEY_FILE = "element-keys.txt"


async def main() -> None:
    if not os.path.exists(KEY_FILE):
        sys.exit("Did not find file " + KEY_FILE)

    passphrase = getpass.getpass("Enter passphrase: ")

    plaintext = nio.crypto.key_export.decrypt_and_read(KEY_FILE, passphrase)

    obj = json.loads(plaintext)

    print(json.dumps(obj, indent=4))


asyncio.get_event_loop().run_until_complete(main())