diff options
Diffstat (limited to 'pyecsca/sca/re/zvp.py')
| -rw-r--r-- | pyecsca/sca/re/zvp.py | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/pyecsca/sca/re/zvp.py b/pyecsca/sca/re/zvp.py index efa4ede..7e6c7ce 100644 --- a/pyecsca/sca/re/zvp.py +++ b/pyecsca/sca/re/zvp.py @@ -4,7 +4,6 @@ Provides functionality inspired by the Zero-value point attack [ZVP]_. Implements ZVP point construction from [FFD]_. """ -from functools import lru_cache from typing import List, Set, Tuple, Dict, Type, Callable from public import public import warnings @@ -12,6 +11,7 @@ from astunparse import unparse from sympy import FF, Poly, Monomial, Symbol, Expr, sympify, symbols, div +from pyecsca.ec.mult.fake import cached_fake_mult from pyecsca.sca.re.rpa import MultipleContext from pyecsca.ec.context import local from pyecsca.ec.curve import EllipticCurve @@ -25,8 +25,6 @@ from pyecsca.ec.mult import ScalarMultiplier from pyecsca.ec.params import DomainParameters from pyecsca.ec.point import Point -from pyecsca.ec.mult.fake import fake_mult - has_pari = False try: import cypari2 @@ -584,16 +582,6 @@ def solve_hard_dcp_cypari( return res -@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 addition_chain( scalar: int, @@ -618,7 +606,7 @@ def addition_chain( .. note:: The scalar multiplier must not short-circuit. """ - 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): |