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| |
| /* |
| // Intel(R) Integrated Performance Primitives |
| // Cryptographic Primitives (ippcp) |
| // |
| // Contents: |
| // ippsSet_BN() |
| */ |
| |
| #include "owndefs.h" |
| #include "owncp.h" |
| #include "pcpbn.h" |
| #include "pcptool.h" |
| |
| |
| /*F* |
| // Name: ippsSet_BN |
| // |
| // Purpose: Set BigNum. |
| // |
| // Returns: Reason: |
| // ippStsNullPtrErr pBN == NULL |
| // pData == NULL |
| // ippStsContextMatchErr !BN_VALID_ID(pBN) |
| // ippStsLengthErr length < 1 |
| // ippStsOutOfRangeErr length > BN_ROOM(pBN) |
| // ippStsNoErr no errors |
| // |
| // Parameters: |
| // sgn sign |
| // length data size (in Ipp32u chunks) |
| // pData source data pointer |
| // pBN BigNum ctx |
| // |
| *F*/ |
| IPPFUN(IppStatus, ippsSet_BN, (IppsBigNumSGN sgn, int length, const Ipp32u* pData, |
| IppsBigNumState* pBN)) |
| { |
| IPP_BAD_PTR2_RET(pData, pBN); |
| |
| pBN = (IppsBigNumState*)( IPP_ALIGNED_PTR(pBN, BN_ALIGNMENT) ); |
| IPP_BADARG_RET(!BN_VALID_ID(pBN), ippStsContextMatchErr); |
| |
| IPP_BADARG_RET(length<1, ippStsLengthErr); |
| |
| /* compute real size */ |
| FIX_BNU(pData, length); |
| |
| { |
| cpSize len = INTERNAL_BNU_LENGTH(length); |
| IPP_BADARG_RET(len > BN_ROOM(pBN), ippStsOutOfRangeErr); |
| |
| ZEXPAND_COPY_BNU((Ipp32u*)BN_NUMBER(pBN), BN_ROOM(pBN)*(int)(sizeof(BNU_CHUNK_T)/sizeof(Ipp32u)), pData, length); |
| |
| BN_SIZE(pBN) = len; |
| |
| if(length==1 && pData[0] == 0) |
| sgn = ippBigNumPOS; /* consider zero value as positive */ |
| BN_SIGN(pBN) = sgn; |
| |
| return ippStsNoErr; |
| } |
| } |