Method mul

test/functional/test_framework/key.py:202–213

Compute a (multi) point multiplication ps is a list of (Jacobian tuple, scalar) pairs.

(self, ps)

        return (x3, y3, z3)

    def mul(self, ps):
        """Compute a (multi) point multiplication

        ps is a list of (Jacobian tuple, scalar) pairs.
        """
        r = (0, 1, 0)
        for i in range(255, -1, -1):
            r = self.double(r)
            for (p, n) in ps:
                if ((n >> i) & 1):
                    r = self.add(r, p)
        return r

SECP256K1_FIELD_SIZE = 2**256 - 2**32 - 977
SECP256K1 = EllipticCurve(SECP256K1_FIELD_SIZE, 0, 7)