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.. hazmat::
Key Exchange agreements
=======================
.. module:: cryptography.hazmat.primitives.asymmetric.key_exchange
Key exchange agreements are cryptographic operations, like Diffie-Hellman
key exchanges, that allow two parties to use their public-private key pairs
to establish a shared secret key over an insecure channel. Usually the
negotiated key is further derived before using it for symmetric operations.
Interfaces
~~~~~~~~~~
.. class:: KeyExchangeContext
.. versionadded:: 1.1
.. method:: agree(public_key)
:param public_key: The peer public key, the type depends on the
crypto system used, for example :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`
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