1 /******************************************************************************* 2 * Copyright 2004-2018 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 // Big Number Operations 46 // 47 // Contents: 48 // ippsSetOctString_BN() 49 // 50 */ 51 52 #include "owndefs.h" 53 #include "owncp.h" 54 #include "pcpbn.h" 55 56 57 /*F* 58 // Name: ippsSetOctString_BN 59 // 60 // Purpose: Convert octet string into the BN value. 61 // 62 // Returns: Reason: 63 // ippStsNullPtrErr NULL == pOctStr 64 // NULL == pBN 65 // 66 // ippStsContextMatchErr !BN_VALID_ID(pBN) 67 // 68 // ippStsLengthErr 0 > strLen 69 // 70 // ippStsSizeErr BN_ROOM(pBN) is enough for keep actual strLen 71 // 72 // ippStsNoErr no errors 73 // 74 // Parameters: 75 // pOctStr pointer to the source octet string 76 // strLen octet string length 77 // pBN pointer to the target BN 78 // 79 *F*/ 80 IPPFUN(IppStatus, ippsSetOctString_BN,(const Ipp8u* pOctStr, int strLen, 81 IppsBigNumState* pBN)) 82 { 83 IPP_BAD_PTR2_RET(pOctStr, pBN); 84 85 pBN = (IppsBigNumState*)( IPP_ALIGNED_PTR(pBN, BN_ALIGNMENT) ); 86 IPP_BADARG_RET(!BN_VALID_ID(pBN), ippStsContextMatchErr); 87 88 IPP_BADARG_RET((0>strLen), ippStsLengthErr); 89 90 /* remove leading zeros */ 91 while(strLen && (0==pOctStr[0])) { 92 strLen--; 93 pOctStr++; 94 } 95 96 /* test BN size */ 97 IPP_BADARG_RET((int)(sizeof(BNU_CHUNK_T)*BN_ROOM(pBN))<strLen, ippStsSizeErr); 98 if(strLen) 99 BN_SIZE(pBN) = cpFromOctStr_BNU(BN_NUMBER(pBN), pOctStr, strLen); 100 else { 101 BN_NUMBER(pBN)[0] = (BNU_CHUNK_T)0; 102 BN_SIZE(pBN) = 1; 103 } 104 BN_SIGN(pBN) = ippBigNumPOS; 105 106 return ippStsNoErr; 107 } 108
