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/*******************************************************************************
* Copyright 2016-2018 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.
// Internal Definitions of SSE Montgomery Exp
//
*/
#include "owncp.h"
#if (_IPP>=_IPP_W7)
#include "pcpbnuimpl.h"
#include "pcpngmontexpstuff.h"
#define RSA_SSE2_MIN_BITSIZE (256)
#define RSA_SSE2_MAX_BITSIZE (13*1024)
#define NORM_DIGSIZE_SSE2 (BITSIZE(Ipp32u))
#define NORM_BASE_SSE2 ((Ipp64u)1<<NORM_DIGSIZE_SSE2)
#define NORM_MASK_SSE2 (NORM_BASE_SSE2-1)
#define EXP_DIGIT_SIZE_SSE2 (27)
#define EXP_DIGIT_BASE_SSE2 (1<<EXP_DIGIT_SIZE_SSE2)
#define EXP_DIGIT_MASK_SSE2 (EXP_DIGIT_BASE_SSE2-1)
/* number of "diSize" chunks in "bitSize" bit string */
__INLINE int cpDigitNum_sse2(int bitSize, int digSize)
{ return (bitSize + digSize-1)/digSize; }
/* number of "RSA_SSE2_DIGIT_SIZE" chunks in "bitSize" bit string matched for AMM */
__INLINE cpSize numofVariable_sse2(int modulusBits)
{
cpSize ammBitSize = 2 + cpDigitNum_sse2(modulusBits, BITSIZE(BNU_CHUNK_T)) * BITSIZE(BNU_CHUNK_T);
cpSize redNum = cpDigitNum_sse2(ammBitSize, EXP_DIGIT_SIZE_SSE2);
return redNum;
}
/* buffer corresponding to numofVariable_sse2() */
__INLINE cpSize numofVariableBuff_sse2(int numV)
{
return numV +4 +(numV&1);
}
/* exponentiation buffer size */
#define gsMontExpBinBuffer_sse2 OWNAPI(gsMontExpBinBuffer_sse2)
#define gsMontExpWinBuffer_sse2 OWNAPI(gsMontExpWinBuffer_sse2)
cpSize gsMontExpBinBuffer_sse2(int modulusBits);
cpSize gsMontExpWinBuffer_sse2(int modulusBits);
/* exponentiations */
#define gsMontExpBin_BNU_sse2 OWNAPI(gsMontExpBin_BNU_sse2)
cpSize gsMontExpBin_BNU_sse2(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBufferT);
#define gsMontExpBin_BNU_sscm_sse2 OWNAPI(gsMontExpBin_BNU_sscm_sse2)
cpSize gsMontExpBin_BNU_sscm_sse2(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBufferT);
#define gsMontExpWin_BNU_sse2 OWNAPI(gsMontExpWin_BNU_sse2)
cpSize gsMontExpWin_BNU_sse2(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBufferT);
#define gsMontExpWin_BNU_sscm_sse2 OWNAPI(gsMontExpWin_BNU_sscm_sse2)
cpSize gsMontExpWin_BNU_sscm_sse2(BNU_CHUNK_T* dataY,
const BNU_CHUNK_T* dataX, cpSize nsX,
const BNU_CHUNK_T* dataE, cpSize nsE,
gsModEngine* pMont,
BNU_CHUNK_T* pBuffer);
#endif /* _IPP_W7 */
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