1 /******************************************************************************* 2 * Copyright 2010-2018 Intel Corporation 3 * All Rights Reserved. 4 * 5 * If this software was obtained under the Intel Simplified Software License, 6 * the following terms apply: 7 * 8 * The source code, information and material ("Material") contained herein is 9 * owned by Intel Corporation or its suppliers or licensors, and title to such 10 * Material remains with Intel Corporation or its suppliers or licensors. The 11 * Material contains proprietary information of Intel or its suppliers and 12 * licensors. The Material is protected by worldwide copyright laws and treaty 13 * provisions. No part of the Material may be used, copied, reproduced, 14 * modified, published, uploaded, posted, transmitted, distributed or disclosed 15 * in any way without Intel's prior express written permission. No license under 16 * any patent, copyright or other intellectual property rights in the Material 17 * is granted to or conferred upon you, either expressly, by implication, 18 * inducement, estoppel or otherwise. Any license under such intellectual 19 * property rights must be express and approved by Intel in writing. 20 * 21 * Unless otherwise agreed by Intel in writing, you may not remove or alter this 22 * notice or any other notice embedded in Materials by Intel or Intel's 23 * suppliers or licensors in any way. 24 * 25 * 26 * If this software was obtained under the Apache License, Version 2.0 (the 27 * "License"), the following terms apply: 28 * 29 * You may not use this file except in compliance with the License. You may 30 * obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 31 * 32 * 33 * Unless required by applicable law or agreed to in writing, software 34 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 35 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 36 * 37 * See the License for the specific language governing permissions and 38 * limitations under the License. 39 *******************************************************************************/ 40 41 /* 42 // Intel(R) Integrated Performance Primitives. Cryptography Primitives. 43 // EC over GF(p^m) definitinons 44 // 45 // Context: 46 // cpGFpECGetSize() 47 // 48 */ 49 50 #include "owndefs.h" 51 #include "owncp.h" 52 #include "pcpgfpecstuff.h" 53 #include "pcpeccp.h" 54 55 56 int cpGFpECGetSize(int basicDeg, int basicElmBitSize) 57 { 58 int ctxSize = 0; 59 int elemLen = basicDeg*BITS_BNU_CHUNK(basicElmBitSize); 60 61 int maxOrderBits = 1+ basicDeg*basicElmBitSize; 62 #if defined(_LEGACY_ECCP_SUPPORT_) 63 int maxOrderLen = BITS_BNU_CHUNK(maxOrderBits); 64 #endif 65 66 int modEngineCtxSize; 67 if(ippStsNoErr==gsModEngineGetSize(maxOrderBits, MONT_DEFAULT_POOL_LENGTH, &modEngineCtxSize)) { 68 69 ctxSize = sizeof(IppsGFpECState) 70 +elemLen*sizeof(BNU_CHUNK_T) /* EC coeff A */ 71 +elemLen*sizeof(BNU_CHUNK_T) /* EC coeff B */ 72 +elemLen*sizeof(BNU_CHUNK_T) /* generator G.x */ 73 +elemLen*sizeof(BNU_CHUNK_T) /* generator G.y */ 74 +elemLen*sizeof(BNU_CHUNK_T) /* generator G.z */ 75 +modEngineCtxSize /* mont engine (R) */ 76 +elemLen*sizeof(BNU_CHUNK_T) /* cofactor */ 77 #if defined(_LEGACY_ECCP_SUPPORT_) 78 +2*elemLen*3*sizeof(BNU_CHUNK_T) /* regular and ephemeral public keys */ 79 +2*maxOrderLen*sizeof(BNU_CHUNK_T) /* regular and ephemeral private keys */ 80 #endif 81 +elemLen*sizeof(BNU_CHUNK_T)*3*EC_POOL_SIZE; 82 } 83 return ctxSize; 84 } 85
