1 /******************************************************************************* 2 * Copyright 2003-2018 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 // 43 // Purpose: 44 // Cryptography Primitive. 45 // EC over Prime Finite Field (EC Key Ecxhange, Diffie-Hellman version with cofactor) 46 // 47 // Contents: 48 // ippsECCPSharedSecretDHC() 49 // 50 // 51 */ 52 53 #include "owndefs.h" 54 #include "owncp.h" 55 #include "pcpeccp.h" 56 57 58 /*F* 59 // Name: ippsECCPSharedSecretDHC 60 // 61 // Purpose: Shared Secret Value Derivation 62 // (Diffie-Hellman version with cofactor). 63 // 64 // Returns: Reason: 65 // ippStsNullPtrErr NULL == pEC 66 // NULL == pPrivateA 67 // NULL == pPublicB 68 // NULL == pShare 69 // 70 // ippStsContextMatchErr illegal pEC->idCtx 71 // illegal pPrivateA->idCtx 72 // illegal pPublicB->idCtx 73 // illegal pShare->idCtx 74 // 75 // ippStsRangeErr not enough room for share key 76 // 77 // ippStsShareKeyErr (infinity) => z 78 // 79 // ippStsNoErr no errors 80 // 81 // Parameters: 82 // pPrivateA pointer to own private key 83 // pPublicB pointer to alien public key 84 // pShare pointer to the shared secret value 85 // pEC pointer to the ECCP context 86 // 87 *F*/ 88 IPPFUN(IppStatus, ippsECCPSharedSecretDHC,(const IppsBigNumState* pPrivateA, 89 const IppsECCPPointState* pPublicB, 90 IppsBigNumState* pShare, 91 IppsECCPState* pEC)) 92 { 93 IPP_BAD_PTR1_RET(pEC); 94 /* use aligned EC context */ 95 pEC = (IppsGFpECState*)( IPP_ALIGNED_PTR(pEC, ECGFP_ALIGNMENT) ); 96 IPP_BADARG_RET(!ECP_TEST_ID(pEC), ippStsContextMatchErr); 97 98 return ippsGFpECSharedSecretDHC(pPrivateA, pPublicB, pShare, pEC, (Ipp8u*)ECP_SBUFFER(pEC)); 99 } 100
