_ structure (or the more recent Asymmetric Key Package, RFC5958_): binary (DER) or ASCII (PEM).
    * `OpenSSH 6.5`_ and newer versions (ASCII).

    Private keys can be in the clear or password-protected.

    For details about the PEM encoding, see `RFC1421`_/`RFC1423`_.

  passphrase (byte string):
    The passphrase to use for decrypting a private key.
    Encryption may be applied protected at the PEM level (not recommended)
    or at the PKCS#8 level (recommended).
    This parameter is ignored if the key in input is not encrypted.

  curve_name (string):
    For a SEC1 encoding only. This is the name of the curve,
    as defined in the `ECC table`_.

.. note::

    To import EdDSA private and public keys, when encoded as raw ``bytes``, use:

    * :func:`Cryptodome.Signature.eddsa.import_public_key`, or
    * :func:`Cryptodome.Signature.eddsa.import_private_key`.

Returns:
  :class:`EccKey` : a new ECC key object

Raises:
  ValueError: when the given key cannot be parsed (possibly because
    the pass phrase is wrong).

.. _RFC1421: https://datatracker.ietf.org/doc/html/rfc1421
.. _RFC1423: https://datatracker.ietf.org/doc/html/rfc1423
.. _RFC5915: https://datatracker.ietf.org/doc/html/rfc5915
.. _RFC5656: https://datatracker.ietf.org/doc/html/rfc5656
.. _RFC8709: https://datatracker.ietf.org/doc/html/rfc8709
.. _RFC5958: https://datatracker.ietf.org/doc/html/rfc5958
.. _`PKCS#8`: https://datatracker.ietf.org/doc/html/rfc5208
.. _`OpenSSH 6.5`: https://flak.tedunangst.com/post/new-openssh-key-format-and-bcrypt-pbkdf
.. _SEC1: https://www.secg.org/sec1-v2.pdf
r