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| |
| /* |
| // Purpose: |
| // Intel(R) Integrated Performance Primitives. Cryptography Primitives. |
| // Internal Unsigned arithmetic |
| // |
| // Contents: |
| // cpMulAdc_BNU_school() |
| // |
| */ |
| |
| #include "owncp.h" |
| #include "pcpbnuarith.h" |
| #include "pcpbnumisc.h" |
| |
| |
| /*F* |
| // Name: cpMulAdc_BNU_school |
| // |
| // Purpose: Multiply 2 BigNums. |
| // |
| // Returns: |
| // extention of result of multiply 2 BigNums |
| // Parameters: |
| // pA source BigNum |
| // pB source BigNum |
| // nsA size of A |
| // nsB size of B |
| // pR resultant BigNum |
| // |
| *F*/ |
| #if defined(_USE_C_cpMulAdc_BNU_school_) |
| #pragma message ("C version of cpMulAdc_BNU_school: ON") |
| #else |
| #pragma message ("C version of cpMulAdc_BNU_school: OFF") |
| #endif |
| |
| #if !((_IPP==_IPP_V8) || \ |
| (_IPP==_IPP_P8) || \ |
| (_IPP>=_IPP_G9) || \ |
| (_IPP==_IPP_S8) || \ |
| (_IPP32E==_IPP32E_M7) || \ |
| (_IPP32E==_IPP32E_U8) || \ |
| (_IPP32E==_IPP32E_Y8) || \ |
| (_IPP32E>=_IPP32E_E9) || \ |
| (_IPP32E==_IPP32E_N8)) || \ |
| defined(_USE_C_cpMulAdc_BNU_school_) |
| BNU_CHUNK_T cpMulAdc_BNU_school(BNU_CHUNK_T* pR, |
| const BNU_CHUNK_T* pA, cpSize nsA, |
| const BNU_CHUNK_T* pB, cpSize nsB) |
| { |
| const BNU_CHUNK_T* pa = (BNU_CHUNK_T*)pA; |
| const BNU_CHUNK_T* pb = (BNU_CHUNK_T*)pB; |
| BNU_CHUNK_T* pr = (BNU_CHUNK_T*)pR; |
| |
| BNU_CHUNK_T extension = 0; |
| cpSize i, j; |
| |
| ZEXPAND_BNU(pr, 0, nsA+nsB); |
| |
| for(i=0; i<nsB; i++ ) { |
| BNU_CHUNK_T b = pb[i]; |
| |
| for(j=0, extension=0; j<nsA; j++ ) { |
| BNU_CHUNK_T rH, rL; |
| |
| MUL_AB(rH, rL, pa[j], b); |
| ADD_ABC(extension, pr[i+j], pr[i+j], rL, extension); |
| extension += rH; |
| } |
| pr[i+j] = extension; |
| } |
| return extension; |
| } |
| #endif |