diff options
Diffstat (limited to 'pyecsca/sca/re/rpa.py')
| -rw-r--r-- | pyecsca/sca/re/rpa.py | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/pyecsca/sca/re/rpa.py b/pyecsca/sca/re/rpa.py index 6e6da08..f9ccd1b 100644 --- a/pyecsca/sca/re/rpa.py +++ b/pyecsca/sca/re/rpa.py @@ -3,7 +3,6 @@ Provides functionality inspired by the Refined-Power Analysis attack by Goubin [ """ from copy import copy, deepcopy -from functools import lru_cache from public import public from typing import ( @@ -32,7 +31,8 @@ from pyecsca.ec.formula import ( TriplingFormula, NegationFormula, DifferentialAdditionFormula, - LadderFormula, ScalingFormula, + LadderFormula, + ScalingFormula, ) from pyecsca.ec.mod import Mod, mod from pyecsca.ec.mult import ( @@ -44,7 +44,7 @@ from pyecsca.ec.params import DomainParameters from pyecsca.ec.model import ShortWeierstrassModel, MontgomeryModel from pyecsca.ec.point import Point from pyecsca.ec.context import Context, Action, local -from pyecsca.ec.mult.fake import fake_mult +from pyecsca.ec.mult.fake import cached_fake_mult from pyecsca.misc.utils import log, warn @@ -420,16 +420,6 @@ class RPA(RE): return mults -@lru_cache(maxsize=256, typed=True) -def _cached_fake_mult( - mult_class: Type[ScalarMultiplier], mult_factory: Callable, params: DomainParameters -) -> ScalarMultiplier: - fm = fake_mult(mult_class, mult_factory, params) - if getattr(fm, "short_circuit", False): - raise ValueError("The multiplier must not short-circuit.") - return fm - - @public def multiples_computed( scalar: int, @@ -465,7 +455,7 @@ def multiples_computed( if kind != "all" and not use_init: raise ValueError("Cannot use kind other than 'all' with use_init=False.") - mult = _cached_fake_mult(mult_class, mult_factory, params) + mult = cached_fake_mult(mult_class, mult_factory, params) ctx = MultipleContext(keep_base=True) if use_init: with local(ctx, copy=False): |