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Diffstat (limited to 'ext/ipp/sources/ippcp/pcpgfpinitarbitrary.c')
-rw-r--r-- | ext/ipp/sources/ippcp/pcpgfpinitarbitrary.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/ext/ipp/sources/ippcp/pcpgfpinitarbitrary.c b/ext/ipp/sources/ippcp/pcpgfpinitarbitrary.c new file mode 100644 index 0000000..809e817 --- /dev/null +++ b/ext/ipp/sources/ippcp/pcpgfpinitarbitrary.c @@ -0,0 +1,108 @@ +/******************************************************************************* +* Copyright 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. Cryptography Primitives. +// Operations over GF(p). +// +// Context: +// ippsGFpInitArbitrary() +// +*/ +#include "owndefs.h" +#include "owncp.h" + +#include "pcpgfpstuff.h" +#include "pcpgfpxstuff.h" +#include "pcptool.h" + + +/*F* +// Name: ippsGFpInitArbitrary +// +// Purpose: initializes prime finite field GF(p) +// +// Returns: Reason: +// ippStsNullPtrErr NULL == pPrime +// NULL == pGFp +// +// ippStsSizeErr !(IPP_MIN_GF_BITSIZE <= primeBitSize <=IPP_MAX_GF_BITSIZE) +// +// ippStsContextMatchErr incorrect pPrime context ID +// +// ippStsBadArgErr prime <0 +// bitsize(prime) != primeBitSize +// prime <IPP_MIN_GF_CHAR +// prime is even +// +// ippStsNoErr no error +// +// Parameters: +// pPrime pointer to the prime context +// primeBitSize length of prime in bits +// pGFp pointer to Finite Field context is being initialized +*F*/ +IPPFUN(IppStatus, ippsGFpInitArbitrary,(const IppsBigNumState* pPrime, int primeBitSize, IppsGFpState* pGFp)) +{ + IPP_BAD_PTR1_RET(pGFp); + pGFp = (IppsGFpState*)( IPP_ALIGNED_PTR(pGFp, GFP_ALIGNMENT) ); + + IPP_BADARG_RET((primeBitSize< IPP_MIN_GF_BITSIZE) || (primeBitSize> IPP_MAX_GF_BITSIZE), ippStsSizeErr); + + IPP_BAD_PTR1_RET(pPrime); + pPrime = (IppsBigNumState*)( IPP_ALIGNED_PTR(pPrime, BN_ALIGNMENT) ); + IPP_BADARG_RET(!BN_VALID_ID(pPrime), ippStsContextMatchErr); + IPP_BADARG_RET(BN_SIGN(pPrime)!= IppsBigNumPOS, ippStsBadArgErr); /* prime is negative */ + IPP_BADARG_RET(BITSIZE_BNU(BN_NUMBER(pPrime),BN_SIZE(pPrime)) != primeBitSize, ippStsBadArgErr); /* primeBitSize == bitsize(prime) */ + IPP_BADARG_RET((BN_SIZE(pPrime)==1) && (BN_NUMBER(pPrime)[0]<IPP_MIN_GF_CHAR), ippStsBadArgErr); /* prime < 3 */ + IPP_BADARG_RET(0==(BN_NUMBER(pPrime)[0] & 1), ippStsBadArgErr); /* prime is even */ + + { + /* init GF */ + IppStatus sts = cpGFpInitGFp(primeBitSize, pGFp); + + /* set up GF engine */ + if(ippStsNoErr==sts) { + cpGFpSetGFp(BN_NUMBER(pPrime), primeBitSize, ippsGFpMethod_pArb(), pGFp); + } + + return sts; + } +} |