mirror of
https://github.com/PR0M3TH3AN/SeedPass.git
synced 2025-09-08 07:18:47 +00:00
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
import time
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from seedpass.core.manager import PasswordManager
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class SlowBIP85:
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"""BIP85 stub that simulates a costly derive."""
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def __init__(self):
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self.calls = 0
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def derive_entropy(self, index: int, entropy_bytes: int, app_no: int = 39) -> bytes:
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self.calls += 1
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time.sleep(0.01)
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return b"\x00" * entropy_bytes
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def _setup_manager(bip85: SlowBIP85) -> PasswordManager:
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pm = PasswordManager.__new__(PasswordManager)
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pm._bip85_cache = {}
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pm.bip85 = bip85
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orig = bip85.derive_entropy
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def cached(index: int, entropy_bytes: int, app_no: int = 39) -> bytes:
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key = (app_no, index)
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if key not in pm._bip85_cache:
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pm._bip85_cache[key] = orig(
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index=index, entropy_bytes=entropy_bytes, app_no=app_no
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)
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return pm._bip85_cache[key]
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bip85.derive_entropy = cached
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return pm
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def test_bip85_cache_benchmark():
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slow_uncached = SlowBIP85()
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start = time.perf_counter()
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for _ in range(3):
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slow_uncached.derive_entropy(1, 32, 32)
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uncached_time = time.perf_counter() - start
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slow_cached = SlowBIP85()
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pm = _setup_manager(slow_cached)
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start = time.perf_counter()
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for _ in range(3):
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pm.get_bip85_entropy(32, 1)
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cached_time = time.perf_counter() - start
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# Ensure caching avoids redundant derive calls without relying on
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# potentially flaky timing comparisons across platforms.
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assert slow_uncached.calls == 3
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assert slow_cached.calls == 1
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