Files
seedPass/src/tests/test_nostr_legacy_decrypt_fallback.py
2025-08-11 19:35:03 -04:00

39 lines
1.3 KiB
Python

import json
import base64
import hashlib
import unicodedata
import logging
from cryptography.fernet import Fernet
from helpers import create_vault, TEST_PASSWORD
import seedpass.core.encryption as enc_module
def test_legacy_password_only_fallback(monkeypatch, tmp_path, caplog):
calls: list[int] = []
def _fast_legacy_key(password: str, iterations: int = 100_000) -> bytes:
calls.append(iterations)
normalized = unicodedata.normalize("NFKD", password).strip().encode("utf-8")
key = hashlib.pbkdf2_hmac("sha256", normalized, b"", 1, dklen=32)
return base64.urlsafe_b64encode(key)
# Speed up legacy key derivation
monkeypatch.setattr(
enc_module, "_derive_legacy_key_from_password", _fast_legacy_key
)
monkeypatch.setattr(
enc_module, "prompt_existing_password", lambda *_a, **_k: TEST_PASSWORD
)
vault, enc_mgr = create_vault(tmp_path)
data = {"schema_version": 4, "entries": {}}
legacy_key = _fast_legacy_key(TEST_PASSWORD, iterations=50_000)
encrypted = Fernet(legacy_key).encrypt(json.dumps(data).encode())
caplog.set_level(logging.WARNING)
assert enc_mgr.decrypt_and_save_index_from_nostr(encrypted)
assert vault.load_index() == data
assert any("legacy password-only" in rec.message for rec in caplog.records)
assert calls == [50_000, 50_000]