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- /*
- * Copyright (C) 2011-2017 Intel Corporation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- /**
- * File:
- * ipp_bn.cpp
- *Description:
- * Wrappers for Big number generation and free functions
- *
- */
- #include "ipp_wrapper.h"
- #include <stdlib.h>
- #include <string.h>
- #ifndef _TLIBC_CDECL_
- extern "C" int memset_s(void *s, size_t smax, int c, size_t n);
- #endif
- extern "C" IppStatus
- newBN(const Ipp32u *data, int size_in_bytes, IppsBigNumState **p_new_BN)
- {
- IppsBigNumState *pBN=0;
- int bn_size = 0;
- if(p_new_BN == NULL || size_in_bytes <= 0 || size_in_bytes % sizeof(Ipp32u))
- return ippStsBadArgErr;
- /* Get the size of the IppsBigNumState context in bytes */
- IppStatus error_code = ippsBigNumGetSize(size_in_bytes/(int)sizeof(Ipp32u), &bn_size);
- if(error_code != ippStsNoErr)
- {
- *p_new_BN = 0;
- return error_code;
- }
- pBN = (IppsBigNumState *) malloc(bn_size);
- if(!pBN)
- {
- error_code = ippStsMemAllocErr;
- *p_new_BN = 0;
- return error_code;
- }
- /* Initializes context and partitions allocated buffer */
- error_code = ippsBigNumInit(size_in_bytes/(int)sizeof(Ipp32u), pBN);
- if(error_code != ippStsNoErr)
- {
- SAFE_FREE_MM(pBN);
- *p_new_BN = 0;
- return error_code;
- }
- if(data)
- {
- error_code = ippsSet_BN(IppsBigNumPOS, size_in_bytes/(int)sizeof(Ipp32u), data, pBN);
- if(error_code != ippStsNoErr)
- {
- SAFE_FREE_MM(pBN);
- *p_new_BN = 0;
- return error_code;
- }
- }
- *p_new_BN = pBN;
- return error_code;
- }
- extern "C" void secure_free_BN(IppsBigNumState *pBN, int size_in_bytes)
- {
- if(pBN == NULL || size_in_bytes <= 0 || size_in_bytes % sizeof(Ipp32u))
- {
- if(pBN)
- {
- free(pBN);
- }
- return;
- }
- int bn_size = 0;
- /* Get the size of the IppsBigNumState context in bytes
- * Since we have checked the size_in_bytes before and the &bn_size is not NULL,
- * ippsBigNumGetSize never returns failure
- */
- if(ippsBigNumGetSize(size_in_bytes/(int)sizeof(Ipp32u), &bn_size) != ippStsNoErr)
- {
- free(pBN);
- return;
- }
- /* Clear the buffer before free. */
- memset_s(pBN, bn_size, 0, bn_size);
- free(pBN);
- return;
- }
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