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.. _mozilla_projects_nss_reference_fc_getinfo:
FC_GetInfo
==========
`Name <#name>`__
~~~~~~~~~~~~~~~~
.. container::
FC_GetInfo - return general information about the PKCS #11 library.
`Syntax <#syntax>`__
~~~~~~~~~~~~~~~~~~~~
.. container::
.. code::
CK_RV FC_GetInfo(CK_INFO_PTR pInfo);
`Parameters <#parameters>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
``FC_GetInfo`` has one parameter:
``pInfo``
points to a `CK_INFO </en-US/CK_INFO>`__ structure
`Description <#description>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
``FC_GetInfo`` returns general information about the PKCS #11 library. On return, the ``CK_INFO``
structure that ``pInfo`` points to has the following information:
- ``cryptokiVersion``: PKCS #11 interface version number implemented by the PKCS #11 library.
The version is 2.20 (``major=0x02, minor=0x14``).
- ``manufacturerID``: the PKCS #11 library manufacturer, "Mozilla Foundation", padded with
spaces to 32 characters and not null-terminated.
- ``flags``: should be 0.
- ``libraryDescription``: description of the library, "NSS Internal Crypto Services", padded
with spaces to 32 characters and not null-terminated.
- ``libraryVersion``: PKCS #11 library version number, for example, 3.11
(``major=0x03, minor=0x0b``).
A user may call ``FC_GetInfo`` without logging into the token (to assume the NSS User role).
.. _return_value:
`Return value <#return_value>`__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
``FC_GetInfo`` always returns ``CKR_OK``.
.. note::
``FC_GetInfo`` should return ``CKR_ARGUMENTS_BAD`` if ``pInfo`` is ``NULL``.
``FC_GetInfo`` should return ``CKR_CRYPTOKI_NOT_INITIALIZED`` if the library is not
initialized.
`Examples <#examples>`__
~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
Note the use of the ``%.32s`` format string to print the ``manufacturerID`` and
``libraryDescription`` members of the ``CK_INFO`` structure.
.. code::
#include <assert.h>
#include <stdio.h>
CK_FUNCTION_LIST_PTR pFunctionList;
CK_RV crv;
CK_INFO info;
crv = FC_GetFunctionList(&pFunctionList);
assert(crv == CKR_OK);
...
/* invoke FC_GetInfo as pFunctionList->C_GetInfo */
crv = pFunctionList->C_GetInfo(&info);
assert(crv == CKR_OK);
printf("General information about the PKCS #11 library:\n");
printf(" PKCS #11 version: %d.%d\n",
(int)info.cryptokiVersion.major, (int)info.cryptokiVersion.minor);
printf(" manufacturer ID: %.32s\n", info.manufacturerID);
printf(" flags: 0x%08lx\n", info.flags);
printf(" library description: %.32s\n", info.libraryDescription);
printf(" library version: %d.%d\n",
(int)info.libraryVersion.major, (int)info.libraryVersion.minor);
printf("\n");
.. _see_also:
`See also <#see_also>`__
~~~~~~~~~~~~~~~~~~~~~~~~
.. container::
- `NSC_GetInfo </en-US/NSC_GetInfo>`__
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