/*************************************************************************
* Copyright (C) 2016 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.
//     Security Hash Standard
//     Generalized Functionality
// 
//  Contents:
//     cpFinalize_rmf()
// 
*/

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


IPP_OWN_DEFN (void, cpFinalize_rmf, (DigestSHA512 pHash, const Ipp8u* inpBuffer, int inpLen, Ipp64u lenLo, Ipp64u lenHi, const IppsHashMethod* method))
{
   int mbs = method->msgBlkSize;    /* message block size */
   int mrl = method->msgLenRepSize; /* processed length representation size */

   /* local buffer and it length */
   Ipp8u buffer[MBS_SHA512*2];
   int bufferLen = inpLen < (mbs-mrl)? mbs : mbs*2; 

   /* copy rest of message into internal buffer */
   CopyBlock(inpBuffer, buffer, inpLen);

   /* pad message */
   buffer[inpLen++] = 0x80;
   PadBlock(0, buffer+inpLen, bufferLen-inpLen-mrl);

   /* message length representation */
   method->msgLenRep(buffer+bufferLen-mrl, lenLo, lenHi);

   /* copmplete hash computation */
   method->hashUpdate(pHash, buffer, bufferLen);
}
