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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 */
cpDigitNum_avx2(int bitSize,int digSize)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 */
numofVariable_avx2(int modulusBits)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() */
numofVariableBuff_avx2(int numV)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