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  /* 
  // 
  //  Purpose:
  //     Cryptography Primitive.
  //     Internal ECC (prime) Resource List Function
  // 
  // 
  */
  
  #include "owndefs.h"
  #include "owncp.h"
  #include "pcpbnresource.h"
  #include "pcpbn.h"
  
  
  
  /*F*
  //    Name: cpBigNumListGetSize
  //
  // Purpose: Size of BigNum List Buffer
  //
  // Returns:
  //    Size of List Buffer
  //
  // Parameters:
  //    feBitSize size in bits
  //    nodes     number of nodes
  //
  *F*/
  
  int cpBigNumListGetSize(int feBitSize, int nodes)
  {
     /* size of buffer per single big number */
     int bnSize;
     ippsBigNumGetSize(BITS2WORD32_SIZE(feBitSize), &bnSize);
  
     /* size of buffer for whole list */
     return (ALIGN_VAL-1) + (sizeof(BigNumNode) + bnSize) * nodes;
  }
  
  /*F*
  //    Name: cpBigNumListInit
  //
  // Purpose: Init list
  //
  //
  // Parameters:
  //    feBitSize size in bit
  //    nodes     number of nodes
  //    pList     pointer to list
  //
  // Note: buffer for BN list must have appropriate alignment
  //
  *F*/
  void cpBigNumListInit(int feBitSize, int nodes, BigNumNode* pList)
  {
     int itemSize;
     /* length of Big Num */
     int bnLen = BITS2WORD32_SIZE(feBitSize);
     /* size of buffer per single big number */
     ippsBigNumGetSize(bnLen, &itemSize);
     /* size of list item */
     itemSize += sizeof(BigNumNode);
  
     {
        int n;
        /* init all nodes */
        BigNumNode* pNode = (BigNumNode*)( (Ipp8u*)pList + (nodes-1)*itemSize );
        BigNumNode* pNext = NULL;
        for(n=0; n<nodes; n++) {
           Ipp8u* tbnPtr = (Ipp8u*)pNode + sizeof(BigNumNode);
           pNode->pNext = pNext;
           pNode->pBN = (IppsBigNumState*)( IPP_ALIGNED_PTR(tbnPtr, ALIGN_VAL) );
           ippsBigNumInit(bnLen, pNode->pBN);
           pNext = pNode;
           pNode = (BigNumNode*)( (Ipp8u*)pNode - itemSize);
        }
     }
  }
  
  
  /*F*
  //    Name: cpBigNumListGet
  //
  // Purpose: Get BigNum reference
  //
  // Returns:
  //    BigNum reference
  //
  // Parameters:
  //    ppList pointer to pointer to List
  //
  *F*/
  
  IppsBigNumState* cpBigNumListGet(BigNumNode** ppList)
  {
     if(*ppList) {
        IppsBigNumState* ret = (*ppList)->pBN;
        *ppList = (*ppList)->pNext;
        return ret;
     }
     else
        return NULL;
  }
  