Exemplos de Curve.aff_from_jac em Python

Exemplo n.º 1

Arquivo: dsa.py Projeto: btclib-org/btclib

def gen_keys(prv_key: Optional[PrvKey] = None,
             ec: Curve = secp256k1) -> Tuple[int, Point]:
    "Return a private/public (int, Point) key-pair."

    if prv_key is None:
        # q in the range [1, ec.n-1]
        q = 1 + secrets.randbelow(ec.n - 1)
    else:
        q = int_from_prv_key(prv_key, ec)

    QJ = _mult(q, ec.GJ, ec)
    Q = ec.aff_from_jac(QJ)
    return q, Q

Exemplo n.º 2

Arquivo: ssa.py Projeto: giacomocaironi/btclib

def gen_keys_(prv_key: Optional[PrvKey] = None,
              ec: Curve = secp256k1) -> Tuple[int, int, JacPoint]:
    "Return a BIP340 private/public (int, JacPoint) key-pair."

    if prv_key is None:
        q = 1 + secrets.randbelow(ec.n - 1)
    else:
        q = int_from_prv_key(prv_key, ec)

    QJ = _mult(q, ec.GJ, ec)
    x_Q, y_Q = ec.aff_from_jac(QJ)
    if y_Q % 2:
        q = ec.n - q
        QJ = ec.negate_jac(QJ)

    return q, x_Q, QJ