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.. hazmat::
.. module:: cryptography.hazmat.primitives.asymmetric
Signature Interfaces
====================
.. class:: AsymmetricSignatureContext
.. versionadded:: 0.2
.. note::
:class:`~cryptography.hazmat.primitives.asymmetric.utils.Prehashed`
is not supported by this context. You must use the ``sign`` method
on the private key object.
.. method:: update(data)
:param bytes data: The data you want to sign.
.. method:: finalize()
:return bytes signature: The signature.
.. class:: AsymmetricVerificationContext
.. versionadded:: 0.2
.. note::
:class:`~cryptography.hazmat.primitives.asymmetric.utils.Prehashed`
is not supported by this context. You must use the ``verify`` method
on the public key object.
.. 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.
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