.. _eccpgetsizestd:



ECCPGetSizeStd
==============


Gets the size of the IppsECCPState context for a standard elliptic
curve.


Syntax
------


IppStatus ippsECCPGetSizeStd128r1(int\* pSize);


IppStatus ippsECCPGetSizeStd128r2(int\* pSize);


IppStatus ippsECCPGetSizeStd192r1(int\* pSize);


IppStatus ippsECCPGetSizeStd224r1(int\* pSize);


IppStatus ippsECCPGetSizeStd256r1(int\* pSize);


IppStatus ippsECCPGetSizeStd384r1(int\* pSize);


IppStatus ippsECCPGetSizeStd521r1(int\* pSize);


IppStatus ippsECCPGetSizeStdSM2(int\* pSize);


Include Files
-------------


``ippcp.h``


Parameters
----------


.. list-table:: 
   :header-rows: 0

   * - pSize    
     - Pointer to the size (in bytes) of the IppsECCPState context for a standard elliptic curve.




Description
-----------


Each of these functions computes the size of the context in bytes for
the elliptic curve cryptosystem based on a specific standard elliptic
curve. For a list of these curves, see table `Standard Elliptic
Curves <functions-based-on-gf-p.html>`__.


Return Values
-------------


.. list-table:: 
   :header-rows: 0

   * - ippStsNoErr    
     - Indicates no error. Any other value indicates an error or warning.
   * - ippStsNullPtrErr   
     - Indicates an error condition if any of the specified pointers is NULL.