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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpbninit.c')
| -rw-r--r-- | ext/ipp/sources/ippcp/pcpbninit.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpbninit.c b/ext/ipp/sources/ippcp/pcpbninit.c new file mode 100644 index 0000000..a2047cb --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpbninit.c @@ -0,0 +1,104 @@ +/******************************************************************************* +* 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: +// ippsBigNumGetSize() +// ippsBigNumInit() +// +*/ + +#include "owndefs.h" +#include "owncp.h" +#include "pcpbn.h" +#include "pcptool.h" + +/*F* +// Name: ippsBigNumInit +// +// Purpose: Init BigNum spec for future usage. +// +// Returns: Reason: +// ippStsNullPtrErr pBN == NULL +// ippStsLengthErr length<1 +// length > BITS2WORD32_SIZE(BN_MAXBITSIZE) +// ippStsNoErr no errors +// +// Parameters: +// length max BN length (32-bits segments) +// pBN BigNum ctx +// +*F*/ +IPPFUN(IppStatus, ippsBigNumInit, (int length, IppsBigNumState* pBN)) +{ + IPP_BADARG_RET(length<1 || length>BITS2WORD32_SIZE(BN_MAXBITSIZE), ippStsLengthErr); + IPP_BAD_PTR1_RET(pBN); + pBN = (IppsBigNumState*)(IPP_ALIGNED_PTR(pBN, BN_ALIGNMENT)); + + { + Ipp8u* ptr = (Ipp8u*)pBN; + + /* convert length to the number of BNU_CHUNK_T */ + cpSize len = INTERNAL_BNU_LENGTH(length); + + BN_ID(pBN) = idCtxUnknown; + BN_SIGN(pBN) = ippBigNumPOS; + BN_SIZE(pBN) = 1; /* initial valie is zero */ + BN_ROOM(pBN) = len; /* close to what has been passed by user */ + + /* reserve one BNU_CHUNK_T more for cpDiv_BNU, + mul, mont exp operations */ + len++; + + /* allocate buffers */ + BN_NUMBER(pBN) = (BNU_CHUNK_T*)(ptr += sizeof(IppsBigNumState)); + BN_BUFFER(pBN) = (BNU_CHUNK_T*)(ptr += len * sizeof(BNU_CHUNK_T)); /* use expanded length here */ + + /* set BN value and buffer to zero */ + ZEXPAND_BNU(BN_NUMBER(pBN), 0, len); + ZEXPAND_BNU(BN_BUFFER(pBN), 0, len); + + BN_ID(pBN) = idCtxBigNum; + return ippStsNoErr; + } +}
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