Home | History | Annotate | Download | only in ippcp
      1 /*******************************************************************************
      2 * Copyright 2002-2018 Intel Corporation
      3 * All Rights Reserved.
      4 *
      5 * If this  software was obtained  under the  Intel Simplified  Software License,
      6 * the following terms apply:
      7 *
      8 * The source code,  information  and material  ("Material") contained  herein is
      9 * owned by Intel Corporation or its  suppliers or licensors,  and  title to such
     10 * Material remains with Intel  Corporation or its  suppliers or  licensors.  The
     11 * Material  contains  proprietary  information  of  Intel or  its suppliers  and
     12 * licensors.  The Material is protected by  worldwide copyright  laws and treaty
     13 * provisions.  No part  of  the  Material   may  be  used,  copied,  reproduced,
     14 * modified, published,  uploaded, posted, transmitted,  distributed or disclosed
     15 * in any way without Intel's prior express written permission.  No license under
     16 * any patent,  copyright or other  intellectual property rights  in the Material
     17 * is granted to  or  conferred  upon  you,  either   expressly,  by implication,
     18 * inducement,  estoppel  or  otherwise.  Any  license   under such  intellectual
     19 * property rights must be express and approved by Intel in writing.
     20 *
     21 * Unless otherwise agreed by Intel in writing,  you may not remove or alter this
     22 * notice or  any  other  notice   embedded  in  Materials  by  Intel  or Intel's
     23 * suppliers or licensors in any way.
     24 *
     25 *
     26 * If this  software  was obtained  under the  Apache License,  Version  2.0 (the
     27 * "License"), the following terms apply:
     28 *
     29 * You may  not use this  file except  in compliance  with  the License.  You may
     30 * obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
     31 *
     32 *
     33 * Unless  required  by   applicable  law  or  agreed  to  in  writing,  software
     34 * distributed under the License  is distributed  on an  "AS IS"  BASIS,  WITHOUT
     35 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     36 *
     37 * See the   License  for the   specific  language   governing   permissions  and
     38 * limitations under the License.
     39 *******************************************************************************/
     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Cryptography Primitive.
     45 //     Digesting message according to SHA256
     46 //
     47 //  Contents:
     48 //        ippsSHA256Final()
     49 //
     50 */
     51 
     52 #include "owndefs.h"
     53 #include "owncp.h"
     54 #include "pcphash.h"
     55 #include "pcphash_rmf.h"
     56 #include "pcptool.h"
     57 #include "pcpsha256stuff.h"
     58 
     59 
     60 /*F*
     61 //    Name: ippsSHA256Final
     62 //
     63 // Purpose: Stop message digesting and return digest.
     64 //
     65 // Returns:                Reason:
     66 //    ippStsNullPtrErr        pMD == NULL
     67 //                            pState == NULL
     68 //    ippStsContextMatchErr   pState->idCtx != idCtxSHA256
     69 //    ippStsNoErr             no errors
     70 //
     71 // Parameters:
     72 //    pMD         address of the output digest
     73 //    pState      pointer to the SHA256 state
     74 //
     75 *F*/
     76 IPPFUN(IppStatus, ippsSHA256Final,(Ipp8u* pMD, IppsSHA256State* pState))
     77 {
     78    /* test state pointer and ID */
     79    IPP_BAD_PTR1_RET(pState);
     80    pState = (IppsSHA256State*)( IPP_ALIGNED_PTR(pState, SHA256_ALIGNMENT) );
     81    IPP_BADARG_RET(idCtxSHA256 !=HASH_CTX_ID(pState), ippStsContextMatchErr);
     82 
     83    /* test digest pointer */
     84    IPP_BAD_PTR1_RET(pMD);
     85 
     86    cpFinalizeSHA256(HASH_VALUE(pState), HASH_BUFF(pState), HAHS_BUFFIDX(pState), HASH_LENLO(pState));
     87    /* convert hash into big endian */
     88    ((Ipp32u*)pMD)[0] = ENDIANNESS32(HASH_VALUE(pState)[0]);
     89    ((Ipp32u*)pMD)[1] = ENDIANNESS32(HASH_VALUE(pState)[1]);
     90    ((Ipp32u*)pMD)[2] = ENDIANNESS32(HASH_VALUE(pState)[2]);
     91    ((Ipp32u*)pMD)[3] = ENDIANNESS32(HASH_VALUE(pState)[3]);
     92    ((Ipp32u*)pMD)[4] = ENDIANNESS32(HASH_VALUE(pState)[4]);
     93    ((Ipp32u*)pMD)[5] = ENDIANNESS32(HASH_VALUE(pState)[5]);
     94    ((Ipp32u*)pMD)[6] = ENDIANNESS32(HASH_VALUE(pState)[6]);
     95    ((Ipp32u*)pMD)[7] = ENDIANNESS32(HASH_VALUE(pState)[7]);
     96 
     97    /* re-init hash value */
     98    HAHS_BUFFIDX(pState) = 0;
     99    HASH_LENLO(pState) = 0;
    100    sha256_hashInit(HASH_VALUE(pState));
    101 
    102    return ippStsNoErr;
    103 }
    104