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.. hazmat::

.. module:: cryptography.hazmat.primitives.asymmetric

Signature Interfaces
====================

.. class:: AsymmetricSignatureContext

    .. versionadded:: 0.2

    .. method:: update(data)

        :param bytes data: The data you want to sign.

    .. method:: finalize()

        :return bytes signature: The signature.


.. class:: AsymmetricVerificationContext

    .. versionadded:: 0.2

    .. method:: update(data)

        :param bytes data: The data you wish to verify using the signature.

    .. method:: verify()

        :raises cryptography.exceptions.InvalidSignature: If the signature does
            not validate.