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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfp.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpgfp.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfp.c b/ext/ipp/sources/ippcp/pcpgfp.c new file mode 100644 index 0000000..7e9ba57 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfp.c @@ -0,0 +1,133 @@ +/******************************************************************************* +* Copyright 2010-2018 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. +*******************************************************************************/ + +/* +// Intel(R) Integrated Performance Primitives. Cryptography Primitives. +// Operations over GF(p). +// +// Context: +// cpGFpGetSize() +// cpGFpInitGFp() +// +// +*/ +#include "owndefs.h" +#include "owncp.h" + +#include "pcpgfpstuff.h" +#include "pcpgfpxstuff.h" +#include "pcptool.h" + + +/* +// size of GFp engine context (Montgomery) +*/ +int cpGFpGetSize(int feBitSize, int peBitSize, int numpe) +{ + int ctxSize = 0; + int elemLen = BITS_BNU_CHUNK(feBitSize); + int pelmLen = BITS_BNU_CHUNK(peBitSize); + + /* size of GFp engine */ + ctxSize = sizeof(gsModEngine) + + elemLen*sizeof(BNU_CHUNK_T) /* modulus */ + + elemLen*sizeof(BNU_CHUNK_T) /* mont_R */ + + elemLen*sizeof(BNU_CHUNK_T) /* mont_R^2 */ + + elemLen*sizeof(BNU_CHUNK_T) /* half of modulus */ + + elemLen*sizeof(BNU_CHUNK_T) /* quadratic non-residue */ + + pelmLen*sizeof(BNU_CHUNK_T)*numpe; /* pool */ + + ctxSize += sizeof(IppsGFpState); /* size of IppsGFPState */ + return ctxSize; +} + +/* +// init GFp engine context (Montgomery) +*/ +static void cpGFEInit(gsModEngine* pGFE, int modulusBitSize, int peBitSize, int numpe) +{ + int modLen = BITS_BNU_CHUNK(modulusBitSize); + int pelmLen = BITS_BNU_CHUNK(peBitSize); + + Ipp8u* ptr = (Ipp8u*)pGFE; + + /* clear whole context */ + PaddBlock(0, ptr, sizeof(gsModEngine)); + ptr += sizeof(gsModEngine); + + GFP_PARENT(pGFE) = NULL; + GFP_EXTDEGREE(pGFE) = 1; + GFP_FEBITLEN(pGFE) = modulusBitSize; + GFP_FELEN(pGFE) = modLen; + GFP_FELEN32(pGFE) = BITS2WORD32_SIZE(modulusBitSize); + GFP_PELEN(pGFE) = pelmLen; + //GFP_METHOD(pGFE) = method; + GFP_MODULUS(pGFE) = (BNU_CHUNK_T*)(ptr); ptr += modLen*sizeof(BNU_CHUNK_T); + GFP_MNT_R(pGFE) = (BNU_CHUNK_T*)(ptr); ptr += modLen*sizeof(BNU_CHUNK_T); + GFP_MNT_RR(pGFE) = (BNU_CHUNK_T*)(ptr); ptr += modLen*sizeof(BNU_CHUNK_T); + GFP_HMODULUS(pGFE) = (BNU_CHUNK_T*)(ptr); ptr += modLen*sizeof(BNU_CHUNK_T); + GFP_QNR(pGFE) = (BNU_CHUNK_T*)(ptr); ptr += modLen*sizeof(BNU_CHUNK_T); + GFP_POOL(pGFE) = (BNU_CHUNK_T*)(ptr);/* ptr += modLen*sizeof(BNU_CHUNK_T);*/ + GFP_MAXPOOL(pGFE) = numpe; + GFP_USEDPOOL(pGFE) = 0; + + cpGFpElementPadd(GFP_MODULUS(pGFE), modLen, 0); + cpGFpElementPadd(GFP_MNT_R(pGFE), modLen, 0); + cpGFpElementPadd(GFP_MNT_RR(pGFE), modLen, 0); + cpGFpElementPadd(GFP_HMODULUS(pGFE), modLen, 0); + cpGFpElementPadd(GFP_QNR(pGFE), modLen, 0); +} + +IppStatus cpGFpInitGFp(int primeBitSize, IppsGFpState* pGF) +{ + IPP_BADARG_RET((primeBitSize< IPP_MIN_GF_BITSIZE) || (primeBitSize> IPP_MAX_GF_BITSIZE), ippStsSizeErr); + IPP_BAD_PTR1_RET(pGF); + pGF = (IppsGFpState*)( IPP_ALIGNED_PTR(pGF, GFP_ALIGNMENT) ); + + { + Ipp8u* ptr = (Ipp8u*)pGF; + + GFP_ID(pGF) = idCtxGFP; + GFP_PMA(pGF) = (gsModEngine*)(ptr+sizeof(IppsGFpState)); + cpGFEInit(GFP_PMA(pGF), primeBitSize, primeBitSize+BITSIZE(BNU_CHUNK_T), GFP_POOL_SIZE); + + return ippStsNoErr; + } +} |