/*************************************************************************
* Copyright (C) 2002 Intel Corporation
*
* Licensed under the Apache License,  Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* 	http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law  or agreed  to  in  writing,  software
* distributed under  the License  is  distributed  on  an  "AS IS"  BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the  specific  language  governing  permissions  and
* limitations under the License.
*************************************************************************/

/* 
// 
//  Purpose:
//     Cryptography Primitive.
//     Digesting message according to SHA256
// 
//  Contents:
//        ippsSHA256MessageDigest()
//
*/

#include "owndefs.h"
#include "owncp.h"
#include "pcphash.h"
#include "pcphash_rmf.h"
#include "pcptool.h"
#include "pcpsha256stuff.h"

/*F*
//    Name: ippsSHA256MessageDigest
//
// Purpose: Digest of the whole message.
//
// Returns:                Reason:
//    ippStsNullPtrErr        pMsg == NULL
//                            pMD == NULL
//    ippStsLengthErr         len <0
//    ippStsNoErr             no errors
//
// Parameters:
//    pMsg        pointer to the input message
//    len         input message length
//    pMD         address of the output digest
//
*F*/
IPPFUN(IppStatus, ippsSHA256MessageDigest,(const Ipp8u* pMsg, int len, Ipp8u* pMD))
{
   /* test digest pointer */
   IPP_BAD_PTR1_RET(pMD);

   {
      DigestSHA256 hash;
      IppStatus sts = cpSHA256MessageDigest(hash, pMsg, len, sha256_iv);
      if(ippStsNoErr==sts)
         CopyBlock(hash, pMD, IPP_SHA256_DIGEST_BITSIZE/BYTESIZE);
      return sts;
   }
}
