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Diffstat (limited to 'ext/ipp/sources/ippcp/gsmod_enginegetsize.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/gsmod_enginegetsize.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/gsmod_enginegetsize.c b/ext/ipp/sources/ippcp/gsmod_enginegetsize.c new file mode 100644 index 0000000..89078fa --- /dev/null +++ b/ext/ipp/sources/ippcp/gsmod_enginegetsize.c @@ -0,0 +1,91 @@ +/******************************************************************************* +* Copyright 2017-2018 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. Modular Arithmetic Engine. General Functionality +// +// Contents: +// gsModEngineGetSize() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpbnumisc.h" +#include "pcpbnuarith.h" +#include "gsmodstuff.h" +#include "pcptool.h" + +/*F* +// Name: gsModEngineGetSize +// +// Purpose: Specifies size of size of ModEngine context (Montgomery). +// +// Returns: Reason: +// ippStsLengthErr modulusBitSize < 1 +// numpe < MOD_ENGINE_MIN_POOL_SIZE +// ippStsNoErr no errors +// +// Parameters: +// numpe length of pool +// modulusBitSize max modulus length (in bits) +// pSize pointer to size +// +*F*/ + +IppStatus gsModEngineGetSize(int modulusBitSize, int numpe, int* pSize) +{ + int modLen = BITS_BNU_CHUNK(modulusBitSize); + int pelmLen = BITS_BNU_CHUNK(modulusBitSize); + + IPP_BADARG_RET(modulusBitSize<1, ippStsLengthErr); + IPP_BADARG_RET(numpe<MOD_ENGINE_MIN_POOL_SIZE, ippStsLengthErr); + + /* allocates mimimal necessary to Montgomery based methods */ + *pSize = sizeof(gsModEngine) + + modLen*sizeof(BNU_CHUNK_T) /* modulus */ + + modLen*sizeof(BNU_CHUNK_T) /* mont_R */ + + modLen*sizeof(BNU_CHUNK_T) /* mont_R^2 */ + + pelmLen*sizeof(BNU_CHUNK_T)*numpe; /* buffers */ + + return ippStsNoErr; +} |