Home | History | Annotate | Download | only in ippcp 
      1 /*******************************************************************************
      2 * Copyright 2016-2018 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 //
     43 //  Purpose:
     44 //     Cryptography Primitive.
     45 //     Internal Definitions of SSE Montgomery Exp
     46 //
     47 */
     48 #include "owncp.h"
     49 
     50 #if (_IPP>=_IPP_W7)
     51 
     52 #include "pcpbnuimpl.h"
     53 #include "pcpngmontexpstuff.h"
     54 
     55 #define RSA_SSE2_MIN_BITSIZE  (256)
     56 #define RSA_SSE2_MAX_BITSIZE  (13*1024)
     57 
     58 #define NORM_DIGSIZE_SSE2 (BITSIZE(Ipp32u))
     59 #define NORM_BASE_SSE2   ((Ipp64u)1<<NORM_DIGSIZE_SSE2)
     60 #define NORM_MASK_SSE2 (NORM_BASE_SSE2-1)
     61 
     62 #define EXP_DIGIT_SIZE_SSE2   (27)
     63 #define EXP_DIGIT_BASE_SSE2   (1<<EXP_DIGIT_SIZE_SSE2)
     64 #define EXP_DIGIT_MASK_SSE2   (EXP_DIGIT_BASE_SSE2-1)
     65 
     66 
     67 /* number of "diSize" chunks in "bitSize" bit string */
     68 __INLINE int cpDigitNum_sse2(int bitSize, int digSize)
     69 { return (bitSize + digSize-1)/digSize; }
     70 
     71 /* number of "RSA_SSE2_DIGIT_SIZE" chunks in "bitSize" bit string matched for AMM */
     72 __INLINE cpSize numofVariable_sse2(int modulusBits)
     73 {
     74    cpSize ammBitSize = 2 + cpDigitNum_sse2(modulusBits, BITSIZE(BNU_CHUNK_T)) * BITSIZE(BNU_CHUNK_T);
     75    cpSize redNum = cpDigitNum_sse2(ammBitSize, EXP_DIGIT_SIZE_SSE2);
     76    return redNum;
     77 }
     78 
     79 /* buffer corresponding to numofVariable_sse2() */
     80 __INLINE cpSize numofVariableBuff_sse2(int numV)
     81 {
     82    return numV +4 +(numV&1);
     83 }
     84 
     85 /* exponentiation buffer size */
     86 #define gsMontExpBinBuffer_sse2 OWNAPI(gsMontExpBinBuffer_sse2)
     87 #define gsMontExpWinBuffer_sse2 OWNAPI(gsMontExpWinBuffer_sse2)
     88 cpSize  gsMontExpBinBuffer_sse2(int modulusBits);
     89 cpSize  gsMontExpWinBuffer_sse2(int modulusBits);
     90 
     91 /* exponentiations */
     92 #define gsMontExpBin_BNU_sse2 OWNAPI(gsMontExpBin_BNU_sse2)
     93 cpSize  gsMontExpBin_BNU_sse2(BNU_CHUNK_T* dataY,
     94                         const BNU_CHUNK_T* dataX, cpSize nsX,
     95                         const BNU_CHUNK_T* dataE, cpSize nsE,
     96                               gsModEngine* pMont,
     97                               BNU_CHUNK_T* pBufferT);
     98 
     99 #define gsMontExpBin_BNU_sscm_sse2 OWNAPI(gsMontExpBin_BNU_sscm_sse2)
    100 cpSize  gsMontExpBin_BNU_sscm_sse2(BNU_CHUNK_T* dataY,
    101                         const BNU_CHUNK_T* dataX, cpSize nsX,
    102                         const BNU_CHUNK_T* dataE, cpSize nsE,
    103                               gsModEngine* pMont,
    104                               BNU_CHUNK_T* pBufferT);
    105 
    106 #define gsMontExpWin_BNU_sse2 OWNAPI(gsMontExpWin_BNU_sse2)
    107 cpSize  gsMontExpWin_BNU_sse2(BNU_CHUNK_T* dataY,
    108                              const BNU_CHUNK_T* dataX, cpSize nsX,
    109                              const BNU_CHUNK_T* dataE, cpSize nsE,
    110                                    gsModEngine* pMont,
    111                                    BNU_CHUNK_T* pBufferT);
    112 
    113 #define gsMontExpWin_BNU_sscm_sse2 OWNAPI(gsMontExpWin_BNU_sscm_sse2)
    114 cpSize  gsMontExpWin_BNU_sscm_sse2(BNU_CHUNK_T* dataY,
    115                              const BNU_CHUNK_T* dataX, cpSize nsX,
    116                              const BNU_CHUNK_T* dataE, cpSize nsE,
    117                                    gsModEngine* pMont,
    118                                    BNU_CHUNK_T* pBuffer);
    119 
    120 #endif /* _IPP_W7 */
    121