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     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Cryptography Primitive.
     45 //     Internal Definitions of AVX2 Montgomery Exp
     46 //
     47 */
     48 #include "owncp.h"
     49 
     50 #if (_IPP32E>=_IPP32E_L9)
     51 
     52 #include "pcpbnuimpl.h"
     53 #include "pcpngmontexpstuff.h"
     54 
     55 #define RSA_AVX2_MIN_BITSIZE  (1024)
     56 #define RSA_AVX2_MAX_BITSIZE  (13*1024)
     57 
     58 #define NORM_DIGSIZE_AVX2 (BITSIZE(Ipp32u))
     59 #define NORM_BASE_AVX2    ((Ipp64u)1<<NORM_DIGSIZE_AVX2)
     60 #define NORM_MASK_AVX2    (NORM_BASE_AVX2-1)
     61 
     62 #define EXP_DIGIT_SIZE_AVX2   (27)
     63 #define EXP_DIGIT_BASE_AVX2   (1<<EXP_DIGIT_SIZE_AVX2)
     64 #define EXP_DIGIT_MASK_AVX2   (EXP_DIGIT_BASE_AVX2-1)
     65 
     66 
     67 /* number of "diSize" chunks in "bitSize" bit string */
     68 __INLINE int cpDigitNum_avx2(int bitSize, int digSize)
     69 { return (bitSize + digSize-1)/digSize; }
     70 
     71 /* number of "EXP_DIGIT_SIZE_AVX2" chunks in "bitSize" bit string matched for AMM */
     72 __INLINE cpSize numofVariable_avx2(int modulusBits)
     73 {
     74    cpSize ammBitSize = 2 + cpDigitNum_avx2(modulusBits, BITSIZE(BNU_CHUNK_T)) * BITSIZE(BNU_CHUNK_T);
     75    cpSize redNum = cpDigitNum_avx2(ammBitSize, EXP_DIGIT_SIZE_AVX2);
     76    return redNum;
     77 }
     78 
     79 /* buffer corresponding to numofVariable_avx2() */
     80 __INLINE cpSize numofVariableBuff_avx2(int numV)
     81 {
     82    return numV +4;
     83 }
     84 
     85 /* basic operations */
     86 #define cpMontMul1024_avx2 OWNAPI(cpMontMul1024_avx2)
     87 void    cpMontMul1024_avx2(Ipp64u* pR, const Ipp64u* pA, const Ipp64u* pB, const Ipp64u* pModulus, int mLen, Ipp64u m0);
     88 #define cpMontMul4n_avx2 OWNAPI(cpMontMul4n_avx2)
     89 void    cpMontMul4n_avx2  (Ipp64u* pR, const Ipp64u* pA, const Ipp64u* pB, const Ipp64u* pModulus, int mLen, Ipp64u m0, Ipp64u* pScratchBuffer);
     90 #define cpMontMul4n1_avx2 OWNAPI(cpMontMul4n1_avx2)
     91 void    cpMontMul4n1_avx2 (Ipp64u* pR, const Ipp64u* pA, const Ipp64u* pB, const Ipp64u* pModulus, int mLen, Ipp64u m0, Ipp64u* pScratchBuffer);
     92 #define cpMontMul4n2_avx2 OWNAPI(cpMontMul4n2_avx2)
     93 void    cpMontMul4n2_avx2 (Ipp64u* pR, const Ipp64u* pA, const Ipp64u* pB, const Ipp64u* pModulus, int mLen, Ipp64u m0, Ipp64u* pScratchBuffer);
     94 #define cpMontMul4n3_avx2 OWNAPI(cpMontMul4n3_avx2)
     95 void    cpMontMul4n3_avx2 (Ipp64u* pR, const Ipp64u* pA, const Ipp64u* pB, const Ipp64u* pModulus, int mLen, Ipp64u m0, Ipp64u* pScratchBuffer);
     96 
     97 #define cpMontSqr1024_avx2 OWNAPI(cpMontSqr1024_avx2)
     98 void    cpMontSqr1024_avx2(Ipp64u* pR, const Ipp64u* pA, const Ipp64u* pModulus, int mLen, Ipp64u k0, Ipp64u* pBuffer);
     99 #define cpSqr1024_avx2 OWNAPI(cpSqr1024_avx2)
    100 void    cpSqr1024_avx2 (Ipp64u* pR, const Ipp64u* pA, int aLen, Ipp64u* pBuffer);
    101 #define cpSqr_avx2 OWNAPI(cpSqr_avx2)
    102 void    cpSqr_avx2 (Ipp64u* pR, const Ipp64u* pA, int aLen, Ipp64u* pBuffer);
    103 
    104 #define cpMontRed_avx2 OWNAPI(cpMontRed_avx2)
    105 void    cpMontRed_avx2(Ipp64u* pR, Ipp64u* pProduct, const Ipp64u* pModulus, int mLen, Ipp64u k0);
    106 
    107 /* exponentiation buffer size */
    108 #define gsMontExpBinBuffer_avx2 OWNAPI(gsMontExpBinBuffer_avx2)
    109 #define gsMontExpWinBuffer_avx2 OWNAPI(gsMontExpWinBuffer_avx2)
    110 cpSize  gsMontExpBinBuffer_avx2(int modulusBits);
    111 cpSize  gsMontExpWinBuffer_avx2(int modulusBits);
    112 
    113 /* AVX2 exponentiations */
    114 #define gsMontExpBin_BNU_avx2 OWNAPI(gsMontExpBin_BNU_avx2)
    115 cpSize  gsMontExpBin_BNU_avx2(BNU_CHUNK_T* dataY,
    116                         const BNU_CHUNK_T* dataX, cpSize nsX,
    117                         const BNU_CHUNK_T* dataE, cpSize nsE,
    118                               gsModEngine* pMont,
    119                               BNU_CHUNK_T* pBuffer);
    120 
    121 #define gsMontExpBin_BNU_sscm_avx2 OWNAPI(gsMontExpBin_BNU_sscm_avx2)
    122 cpSize  gsMontExpBin_BNU_sscm_avx2(BNU_CHUNK_T* dataY,
    123                              const BNU_CHUNK_T* dataX, cpSize nsX,
    124                              const BNU_CHUNK_T* dataE, cpSize nsE,
    125                                    gsModEngine* pMont,
    126                                    BNU_CHUNK_T* pBuffer);
    127 
    128 #define gsMontExpWin_BNU_avx2 OWNAPI(gsMontExpWin_BNU_avx2)
    129 cpSize  gsMontExpWin_BNU_avx2(BNU_CHUNK_T* dataY,
    130                         const BNU_CHUNK_T* dataX, cpSize nsX,
    131                         const BNU_CHUNK_T* dataE, cpSize nsE,
    132                               gsModEngine* pMont,
    133                               BNU_CHUNK_T* pBuffer);
    134 
    135 #define gsMontExpWin_BNU_sscm_avx2 OWNAPI(gsMontExpWin_BNU_sscm_avx2)
    136 cpSize  gsMontExpWin_BNU_sscm_avx2(BNU_CHUNK_T* dataY,
    137                              const BNU_CHUNK_T* dataX, cpSize nsX,
    138                              const BNU_CHUNK_T* dataE, cpSize nsE,
    139                                    gsModEngine* pMont,
    140                                    BNU_CHUNK_T* pBuffer);
    141 
    142 #endif /* _IPP32E_L9 */
    143