| /*############################################################################ |
| # Copyright 2004-2018 Intel Corporation |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # 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. |
| // Big Number Operations |
| // |
| // Contents: |
| // ippsSetOctString_BN() |
| // ippsGetOctString_BN() |
| // |
| // |
| */ |
| |
| #include "owndefs.h" |
| #include "owncp.h" |
| #include "pcpbn.h" |
| |
| |
| /*F* |
| // Name: ippsSetOctString_BN |
| // |
| // Purpose: Convert octet string into the BN value. |
| // |
| // Returns: Reason: |
| // ippStsNullPtrErr NULL == pOctStr |
| // NULL == pBN |
| // |
| // ippStsLengthErr 0>strLen |
| // |
| // ippStsSizeErr BN_ROOM() is enough for keep actual strLen |
| // |
| // ippStsNoErr no errors |
| // |
| // Parameters: |
| // pOctStr pointer to the source octet string |
| // strLen octet string length |
| // pBN pointer to the target BN |
| // |
| *F*/ |
| IPPFUN(IppStatus, ippsSetOctString_BN,(const Ipp8u* pOctStr, cpSize strLen, |
| IppsBigNumState* pBN)) |
| { |
| IPP_BAD_PTR2_RET(pOctStr, pBN); |
| |
| pBN = (IppsBigNumState*)( IPP_ALIGNED_PTR(pBN, BN_ALIGNMENT) ); |
| IPP_BADARG_RET(!BN_VALID_ID(pBN), ippStsContextMatchErr); |
| |
| IPP_BADARG_RET((0>strLen), ippStsLengthErr); |
| |
| /* remove leading zeros */ |
| while(strLen && (0==pOctStr[0])) { |
| strLen--; |
| pOctStr++; |
| } |
| |
| /* test BN size */ |
| IPP_BADARG_RET((int)(sizeof(BNU_CHUNK_T)*BN_ROOM(pBN))<strLen, ippStsSizeErr); |
| if(strLen) |
| BN_SIZE(pBN) = cpFromOctStr_BNU(BN_NUMBER(pBN), pOctStr, strLen); |
| else { |
| BN_NUMBER(pBN)[0] = (BNU_CHUNK_T)0; |
| BN_SIZE(pBN) = 1; |
| } |
| BN_SIGN(pBN) = ippBigNumPOS; |
| |
| return ippStsNoErr; |
| } |
| |
| |
| /*F* |
| // Name: ippsGetOctString_BN |
| // |
| // Purpose: Convert BN value into the octet string. |
| // |
| // Returns: Reason: |
| // ippStsNullPtrErr NULL == pOctStr |
| // NULL == pBN |
| // |
| // ippStsRangeErr BN <0 |
| // |
| // ippStsLengthErr strLen is enough for keep BN value |
| // |
| // ippStsNoErr no errors |
| // |
| // Parameters: |
| // pBN pointer to the source BN |
| // pOctStr pointer to the target octet string |
| // strLen octet string length |
| *F*/ |
| IPPFUN(IppStatus, ippsGetOctString_BN,(Ipp8u* pOctStr, cpSize strLen, |
| const IppsBigNumState* pBN)) |
| { |
| IPP_BAD_PTR2_RET(pOctStr, pBN); |
| |
| pBN = (IppsBigNumState*)( IPP_ALIGNED_PTR(pBN, BN_ALIGNMENT) ); |
| IPP_BADARG_RET(!BN_VALID_ID(pBN), ippStsContextMatchErr); |
| IPP_BADARG_RET(BN_NEGATIVE(pBN), ippStsRangeErr); |
| IPP_BADARG_RET((0>strLen), ippStsLengthErr); |
| |
| return cpToOctStr_BNU(pOctStr,strLen, BN_NUMBER(pBN),BN_SIZE(pBN))? ippStsNoErr : ippStsLengthErr; |
| } |
