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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpbnarithminv.c')
-rw-r--r-- | ext/ipp/sources/ippcp/pcpbnarithminv.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpbnarithminv.c b/ext/ipp/sources/ippcp/pcpbnarithminv.c new file mode 100644 index 0000000..7405c42 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpbnarithminv.c @@ -0,0 +1,110 @@ +/******************************************************************************* +* Copyright 2002-2018 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. +*******************************************************************************/ + +/* +// Intel(R) Integrated Performance Primitives +// Cryptographic Primitives (ippcp) +// +// Contents: +// ippsModInv_BN() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpbn.h" +#include "pcptool.h" + + +/*F* +// Name: ippsModInv_BN +// +// Purpose: Multiplicative Inversion BigNum. +// +// Returns: Reason: +// ippStsNullPtrErr pA == NULL +// pM == NULL +// pInv == NULL +// ippStsContextMatchErr !BN_VALID_ID(pA) +// !BN_VALID_ID(pM) +// !BN_VALID_ID(pInv) +// ippStsBadArgErr A<=0 +// ippStsBadModulusErr M<=0 +// ippStsScaleRangeErr A>=M +// ippStsOutOfRangeErr pInv can not hold result +// ippStsNoErr no errors +// ippStsBadModulusErr inversion not found +// +// Parameters: +// pA source (value) BigNum +// pM source (modulus) BigNum +// pInv result BigNum +// +*F*/ +IPPFUN(IppStatus, ippsModInv_BN, (IppsBigNumState* pA, IppsBigNumState* pM, IppsBigNumState* pInv) ) +{ + IPP_BAD_PTR3_RET(pA, pM, pInv); + + pA = (IppsBigNumState*)( IPP_ALIGNED_PTR(pA, BN_ALIGNMENT) ); + IPP_BADARG_RET(!BN_VALID_ID(pA), ippStsContextMatchErr); + pM = (IppsBigNumState*)( IPP_ALIGNED_PTR(pM, BN_ALIGNMENT) ); + IPP_BADARG_RET(!BN_VALID_ID(pM), ippStsContextMatchErr); + pInv = (IppsBigNumState*)( IPP_ALIGNED_PTR(pInv, BN_ALIGNMENT) ); + IPP_BADARG_RET(!BN_VALID_ID(pInv), ippStsContextMatchErr); + + IPP_BADARG_RET(BN_ROOM(pInv) < BN_SIZE(pM), ippStsOutOfRangeErr); + IPP_BADARG_RET(BN_NEGATIVE(pA) || (BN_SIZE(pA)==1 && BN_NUMBER(pA)[0]==0), ippStsBadArgErr); + IPP_BADARG_RET(BN_NEGATIVE(pM) || (BN_SIZE(pM)==1 && BN_NUMBER(pM)[0]==0), ippStsBadModulusErr); + IPP_BADARG_RET(cpCmp_BNU(BN_NUMBER(pA), BN_SIZE(pA), BN_NUMBER(pM), BN_SIZE(pM)) >= 0, ippStsScaleRangeErr); + + { + cpSize nsR = cpModInv_BNU(BN_NUMBER(pInv), + BN_NUMBER(pA), BN_SIZE(pA), + BN_NUMBER(pM), BN_SIZE(pM), + BN_BUFFER(pInv), BN_BUFFER(pA), BN_BUFFER(pM)); + if(nsR) { + BN_SIGN(pInv) = ippBigNumPOS; + BN_SIZE(pInv) = nsR; + return ippStsNoErr; + } + else + return ippStsBadModulusErr; + } +} |