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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpec.c')
-rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpec.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpec.c b/ext/ipp/sources/ippcp/pcpgfpec.c new file mode 100644 index 0000000..a0307dd --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpec.c @@ -0,0 +1,84 @@ +/******************************************************************************* +* 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. +// EC over GF(p^m) definitinons +// +// Context: +// cpGFpECGetSize() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpgfpecstuff.h" +#include "pcpeccp.h" + + +int cpGFpECGetSize(int basicDeg, int basicElmBitSize) +{ + int ctxSize = 0; + int elemLen = basicDeg*BITS_BNU_CHUNK(basicElmBitSize); + + int maxOrderBits = 1+ basicDeg*basicElmBitSize; + #if defined(_LEGACY_ECCP_SUPPORT_) + int maxOrderLen = BITS_BNU_CHUNK(maxOrderBits); + #endif + + int modEngineCtxSize; + if(ippStsNoErr==gsModEngineGetSize(maxOrderBits, MONT_DEFAULT_POOL_LENGTH, &modEngineCtxSize)) { + + ctxSize = sizeof(IppsGFpECState) + +elemLen*sizeof(BNU_CHUNK_T) /* EC coeff A */ + +elemLen*sizeof(BNU_CHUNK_T) /* EC coeff B */ + +elemLen*sizeof(BNU_CHUNK_T) /* generator G.x */ + +elemLen*sizeof(BNU_CHUNK_T) /* generator G.y */ + +elemLen*sizeof(BNU_CHUNK_T) /* generator G.z */ + +modEngineCtxSize /* mont engine (R) */ + +elemLen*sizeof(BNU_CHUNK_T) /* cofactor */ + #if defined(_LEGACY_ECCP_SUPPORT_) + +2*elemLen*3*sizeof(BNU_CHUNK_T) /* regular and ephemeral public keys */ + +2*maxOrderLen*sizeof(BNU_CHUNK_T) /* regular and ephemeral private keys */ + #endif + +elemLen*sizeof(BNU_CHUNK_T)*3*EC_POOL_SIZE; + } + return ctxSize; +} |