1 /*******************************************************************************
2 * Copyright 2018 Intel Corporation
3 * All Rights Reserved.
4 *
5 * If this  software was obtained  under the  Intel Simplified  Software License,
6 * the following terms apply:
7 *
8 * The source code,  information  and material  ("Material") contained  herein is
9 * owned by Intel Corporation or its  suppliers or licensors,  and  title to such
10 * Material remains with Intel  Corporation or its  suppliers or  licensors.  The
11 * Material  contains  proprietary  information  of  Intel or  its suppliers  and
12 * licensors.  The Material is protected by  worldwide copyright  laws and treaty
13 * provisions.  No part  of  the  Material   may  be  used,  copied,  reproduced,
14 * modified, published,  uploaded, posted, transmitted,  distributed or disclosed
15 * in any way without Intel's prior express written permission.  No license under
16 * any patent,  copyright or other  intellectual property rights  in the Material
17 * is granted to  or  conferred  upon  you,  either   expressly,  by implication,
18 * inducement,  estoppel  or  otherwise.  Any  license   under such  intellectual
19 * property rights must be express and approved by Intel in writing.
20 *
21 * Unless otherwise agreed by Intel in writing,  you may not remove or alter this
22 * notice or  any  other  notice   embedded  in  Materials  by  Intel  or Intel's
23 * suppliers or licensors in any way.
24 *
25 *
26 * If this  software  was obtained  under the  Apache License,  Version  2.0 (the
27 * "License"), the following terms apply:
28 *
29 * You may  not use this  file except  in compliance  with  the License.  You may
30 * obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
31 *
32 *
33 * Unless  required  by   applicable  law  or  agreed  to  in  writing,  software
34 * distributed under the License  is distributed  on an  "AS IS"  BASIS,  WITHOUT
35 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
36 *
37 * See the   License  for the   specific  language   governing   permissions  and
38 * limitations under the License.
39 *******************************************************************************/
40 
41 /*
42 //     Intel(R) Integrated Performance Primitives. Cryptography Primitives.
43 //     Operations over GF(p).
44 //
45 //     Context:
46 //        ippsGFpGetSize()
47 //
48 */
49 #include "owndefs.h"
50 #include "owncp.h"
51 
52 #include "pcpgfpstuff.h"
53 #include "pcpgfpxstuff.h"
54 #include "pcptool.h"
55 
56 
57 /*F*
58 // Name: ippsGFpGetSize
59 //
60 // Purpose: Gets the size of the context of a GF(q) field
61 //
62 // Returns:                   Reason:
63 //     ippStsNullPtrErr        pSize == NULL.
64 //     ippStsSizeErr           bitSize is less than 2 or greater than 1024.
65 //     ippStsNoErr             no error
66 //
67 // Parameters:
68 //     feBitSize        Size, in bytes, of the odd prime number q (modulus of GF(q)).
69 //     pSize            Pointer to the buffer size, in bytes, needed for the IppsGFpState
70 //                      context.
71 //
72 *F*/
73 
74 IPPFUN(IppStatus, ippsGFpGetSize,(int feBitSize, int* pSize))
75 {
76    IPP_BAD_PTR1_RET(pSize);
77    IPP_BADARG_RET((feBitSize < 2) || (feBitSize > GFP_MAX_BITSIZE), ippStsSizeErr);
78 
79    *pSize = cpGFpGetSize(feBitSize, feBitSize+BITSIZE(BNU_CHUNK_T), GFP_POOL_SIZE)
80           + GFP_ALIGNMENT;
81    return ippStsNoErr;
82 }
83