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.. _mozilla_projects_nss_reference_fc_digest:
FC_Digest
=========
`Name <#name>`__
~~~~~~~~~~~~~~~~
.. container::
FC_Digest - digest a block of data.
`Syntax <#syntax>`__
~~~~~~~~~~~~~~~~~~~~
.. container::
.. code:: eval
CK_RV FC_Digest(
CK_SESSION_HANDLE hSession,
CK_BYTE_PTR pData,
CK_ULONG usDataLen,
CK_BYTE_PTR pDigest,
CK_ULONG_PTR pusDigestLen
);
`Parameters <#parameters>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
``hSession``
[in] session handle.
``pData``
[in] pointer to data block.
``usDataLen``
[in] length of the data in bytes.
``pDigest``
[out] pointer to location where recovered data is to be stored.
``pusDigestLen``
[in, out] pointer to the maximum size of the output buffer, replaced by the length of the
message digest if the operation is successful.
`Description <#description>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
``FC_Digest`` digests a message in a single operation according to the attributes of the previous
call to ``FC_DigestInit``.
A user may call ``FC_Digest`` 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_digestinit`, `NSC_Digest </en-US/NSC_Digest>`__
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