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/*******************************************************************************
* Copyright 2002-2018 Intel Corporation
* All Rights Reserved.
*
* If this software was obtained under the Intel Simplified Software License,
* the following terms apply:
*
* The source code, information and material ("Material") contained herein is
* owned by Intel Corporation or its suppliers or licensors, and title to such
* Material remains with Intel Corporation or its suppliers or licensors. The
* Material contains proprietary information of Intel or its suppliers and
* licensors. The Material is protected by worldwide copyright laws and treaty
* provisions. No part of the Material may be used, copied, reproduced,
* modified, published, uploaded, posted, transmitted, distributed or disclosed
* in any way without Intel's prior express written permission. No license under
* any patent, copyright or other intellectual property rights in the Material
* is granted to or conferred upon you, either expressly, by implication,
* inducement, estoppel or otherwise. Any license under such intellectual
* property rights must be express and approved by Intel in writing.
*
* Unless otherwise agreed by Intel in writing, you may not remove or alter this
* notice or any other notice embedded in Materials by Intel or Intel's
* suppliers or licensors in any way.
*
*
* If this software was obtained under the Apache License, Version 2.0 (the
* "License"), the following terms apply:
*
* 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:
// ippsSHA224GetTag()
//
*/
#include "owndefs.h"
#include "owncp.h"
#include "pcphash.h"
#include "pcphash_rmf.h"
#include "pcptool.h"
#include "pcpsha256stuff.h"
/*F*
// Name: ippsSHA224GetTag
//
// Purpose: Compute digest based on current state.
// Note, that futher digest update is possible
//
// Returns: Reason:
// ippStsNullPtrErr pTag == NULL
// pState == NULL
// ippStsContextMatchErr pState->idCtx != idCtxSHA256
// ippStsLengthErr max_SHA_digestLen < tagLen <1
// ippStsNoErr no errors
//
// Parameters:
// pTag address of the output digest
// tagLen length of digest
// pState pointer to the SHA224 state
//
*F*/
IPPFUN(IppStatus, ippsSHA224GetTag,(Ipp8u* pTag, Ipp32u tagLen, const IppsSHA224State* pState))
{
/* test state pointer and ID */
IPP_BAD_PTR1_RET(pState);
pState = (IppsSHA256State*)( IPP_ALIGNED_PTR(pState, SHA256_ALIGNMENT) );
IPP_BADARG_RET(idCtxSHA256 !=HASH_CTX_ID(pState), ippStsContextMatchErr);
/* test digest pointer */
IPP_BAD_PTR1_RET(pTag);
IPP_BADARG_RET((tagLen<1)||(sizeof(DigestSHA224)<tagLen), ippStsLengthErr);
{
DigestSHA256 digest;
CopyBlock(HASH_VALUE(pState), digest, sizeof(DigestSHA256));
cpFinalizeSHA256(digest, HASH_BUFF(pState), HAHS_BUFFIDX(pState), HASH_LENLO(pState));
digest[0] = ENDIANNESS32(digest[0]);
digest[1] = ENDIANNESS32(digest[1]);
digest[2] = ENDIANNESS32(digest[2]);
digest[3] = ENDIANNESS32(digest[3]);
digest[4] = ENDIANNESS32(digest[4]);
digest[5] = ENDIANNESS32(digest[5]);
digest[6] = ENDIANNESS32(digest[6]);
digest[7] = ENDIANNESS32(digest[7]);
CopyBlock(digest, pTag, tagLen);
return ippStsNoErr;
}
}
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