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.. _mozilla_projects_nss_reference_fc_getoperationstate:
FC_GetOperationState
====================
`Name <#name>`__
~~~~~~~~~~~~~~~~
.. container::
FC_GetOperationState - get the cryptographic operation state of a session.
`Syntax <#syntax>`__
~~~~~~~~~~~~~~~~~~~~
.. container::
.. code::
CK_RV FC_GetOperationState(
CK_SESSION_HANDLE hSession,
CK_BYTE_PTR pOperationState,
CK_ULONG_PTR pulOperationStateLen
);
`Parameters <#parameters>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
``hSession``
[in] handle of the open session.
``pOperationState``
[out] pointer to a byte array of a length sufficient for containing the operation state or
NULL.
``pulOperationStateLen``
[out] pointer to `CK_ULONG </en-US/CK_ULONG>`__ which receives the total length (in bytes) of
the operation state.
`Description <#description>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
``FC_GetOperationState`` saves the state of the cryptographic operation in a session. This
function only works for digest operations for now. Therefore, a user may call
``FC_GetOperationState`` without logging into the token (to assume the NSS User role).
.. _return_value:
`Return value <#return_value>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
`Examples <#examples>`__
~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
.. _see_also:
`See also <#see_also>`__
~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
- :ref:`mozilla_projects_nss_reference_fc_setoperationstate`,
`NSC_GetOperationState </en-US/NSC_GetOperationState>`__