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/* 
// 
//  Purpose:
//     Cryptography Primitive.
//     Security Hash Standard
//     General Functionality
// 
//  Contents:
//        cpInitHash()
//
*/

#include "owndefs.h"
#include "owncp.h"
#include "pcphash.h"
#include "pcphash_func.h"
#include "pcptool.h"

int cpInitHash(IppsHashState* pCtx, IppHashAlgId algID)
{
   /* setup default processing function */
   HASH_FUNC(pCtx) = cpHashProcFunc[algID];

   /* update default processing function if SHA-NI enabled */
   #if (_IPP>=_IPP_P8) || (_IPP32E>=_IPP32E_Y8)
   if( IsFeatureEnabled(ippCPUID_SHA) ) {

      #if defined(_ENABLE_ALG_SHA1_)
      if(ippHashAlg_SHA1==algID)
         HASH_FUNC(pCtx) = UpdateSHA1ni;
      #endif

      #if defined(_ENABLE_ALG_SHA256_) || defined(_ENABLE_ALG_SHA224_)
      if(ippHashAlg_SHA256==algID || ippHashAlg_SHA224==algID)
         HASH_FUNC(pCtx) = UpdateSHA256ni;
      #endif
   }
   #endif

   /* setup optional agr of processing function */
   HASH_FUNC_PAR(pCtx) = cpHashProcFuncOpt[algID];

   return cpReInitHash(pCtx, algID);
}