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     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Cryptography Primitive. Modular Arithmetic Engine. General Functionality
     45 //
     46 //  Contents:
     47 //        gsUnpackModEngineCtx()
     48 //
     49 */
     50 
     51 #include "owndefs.h"
     52 #include "owncp.h"
     53 #include "pcpbnumisc.h"
     54 #include "pcpbnuarith.h"
     55 #include "gsmodstuff.h"
     56 #include "pcptool.h"
     57 
     58 void gsUnpackModEngineCtx(const Ipp8u* pBuffer, gsModEngine* pCtx)
     59 {
     60    gsModEngine* pAlignedBuffer = (gsModEngine*)pBuffer;
     61 
     62    /* max modulus length */
     63    int modSize = MOD_LEN(pAlignedBuffer);
     64    /* size of context (bytes) without cube and pool buffers */
     65    int ctxSize = sizeof(gsModEngine)
     66                 +sizeof(BNU_CHUNK_T)*(modSize*3);
     67 
     68    CopyBlock(pAlignedBuffer, pCtx, ctxSize);
     69    MOD_MODULUS(pCtx)  = (BNU_CHUNK_T*)((Ipp8u*)pCtx + IPP_UINT_PTR(MOD_MODULUS(pAlignedBuffer)));
     70    MOD_MNT_R(pCtx)    = (BNU_CHUNK_T*)((Ipp8u*)pCtx + IPP_UINT_PTR(MOD_MNT_R(pAlignedBuffer)));
     71    MOD_MNT_R2(pCtx)   = (BNU_CHUNK_T*)((Ipp8u*)pCtx + IPP_UINT_PTR(MOD_MNT_R2(pAlignedBuffer)));
     72    MOD_POOL_BUF(pCtx) = MOD_MNT_R2(pCtx) + modSize;
     73 }
     74