# Copyright (c) 2026 Emanuele Bellocchia
#
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# furnished to do so, subject to the following conditions:
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# THE SOFTWARE.
"""Module with secp256k1 constants."""
# Imports
from typing import Type
from bip_utils.ecc.common.ikeys import IPrivateKey, IPublicKey
from bip_utils.ecc.common.ipoint import IPoint
from bip_utils.ecc.conf import EccConf
# Variables
Secp256k1Point: Type[IPoint]
Secp256k1PublicKey: Type[IPublicKey]
Secp256k1PrivateKey: Type[IPrivateKey]
_CURVE_ORDER: int
_GENERATOR: IPoint
# Use classes from coincurve version
if EccConf.USE_COINCURVE:
from bip_utils.ecc.secp256k1.secp256k1_keys_coincurve import (
Secp256k1PointCoincurve,
Secp256k1PrivateKeyCoincurve,
Secp256k1PublicKeyCoincurve,
)
Secp256k1Point = Secp256k1PointCoincurve
Secp256k1PublicKey = Secp256k1PublicKeyCoincurve
Secp256k1PrivateKey = Secp256k1PrivateKeyCoincurve
_CURVE_ORDER = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141
_GENERATOR = Secp256k1Point.FromCoordinates(0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798,
0x483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8)
# Use classes from ecdsa version
else:
from ecdsa.ecdsa import generator_secp256k1
from bip_utils.ecc.secp256k1.secp256k1_keys_ecdsa import (
Secp256k1PointEcdsa,
Secp256k1PrivateKeyEcdsa,
Secp256k1PublicKeyEcdsa,
)
Secp256k1Point = Secp256k1PointEcdsa
Secp256k1PublicKey = Secp256k1PublicKeyEcdsa
Secp256k1PrivateKey = Secp256k1PrivateKeyEcdsa
_CURVE_ORDER = generator_secp256k1.order()
_GENERATOR = Secp256k1Point(generator_secp256k1)
class Secp256k1Const:
"""Class container for Secp256k1 constants."""
# Curve name
NAME: str = "Secp256k1"
# Curve order
CURVE_ORDER: int = _CURVE_ORDER
# Curve generator point
GENERATOR: IPoint = _GENERATOR