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Serialise the curve parameters to the :term:`PEM` format.
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����zCurve.from_derc C sL t s t|t�r |�� }|�d�}|dkrt�d��| �t�||d� �|�S )am Decode the curve parameters from PEM file.
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| S qtd| dd� t D �f ��)a9 Select a curve based on its OID
:param tuple[int,...] oid_curve: ASN.1 Object Identifier of the
curve to return, like ``(1, 2, 840, 10045, 3, 1, 7)`` for ``NIST256p``.
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curves
:rtype: ~ecdsa.curves.Curve
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``prime256v1``
:raises UnknownCurveError: When the name doesn't match any of the supported
curves
:rtype: ~ecdsa.curves.Curve
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