mirror of
https://github.com/corda/corda.git
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9441de4c38
This release is used in conjunction with the linux-sgx-driver Intial release: https://github.com/01org/linux-sgx-driver commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7 Intel-id: 33399 Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
/*
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* Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "sgx_ecc256_common.h"
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IppStatus sgx_ipp_newBN(const Ipp32u *p_data, int size_in_bytes, IppsBigNumState **p_new_BN)
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{
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IppsBigNumState *pBN = 0;
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int bn_size = 0;
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if (p_new_BN == NULL || (size_in_bytes <= 0) || ((size_in_bytes % sizeof(Ipp32u)) != 0))
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return ippStsBadArgErr;
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// Get the size of the IppsBigNumState context in bytes
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IppStatus error_code = ippsBigNumGetSize(size_in_bytes/(int)sizeof(Ipp32u), &bn_size);
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if (error_code != ippStsNoErr)
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{
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*p_new_BN = 0;
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return error_code;
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}
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pBN = (IppsBigNumState *)malloc(bn_size);
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if (!pBN)
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{
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error_code = ippStsMemAllocErr;
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*p_new_BN = 0;
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return error_code;
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}
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// Initialize context and partition allocated buffer
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error_code = ippsBigNumInit(size_in_bytes/(int)sizeof(Ipp32u), pBN);
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if (error_code != ippStsNoErr)
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{
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free(pBN);
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*p_new_BN = 0;
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return error_code;
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}
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if (p_data)
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{
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error_code = ippsSet_BN(IppsBigNumPOS, size_in_bytes/(int)sizeof(Ipp32u), p_data, pBN);
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if (error_code != ippStsNoErr)
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{
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*p_new_BN = 0;
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free(pBN);
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return error_code;
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}
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}
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*p_new_BN = pBN;
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return error_code;
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}
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void sgx_ipp_secure_free_BN(IppsBigNumState *pBN, int size_in_bytes)
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{
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if (pBN == NULL || size_in_bytes <= 0 || ((size_in_bytes % sizeof(Ipp32u)) != 0))
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{
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if (pBN)
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{
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free(pBN);
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}
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return;
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}
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int bn_size = 0;
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// Get the size of the IppsBigNumState context in bytes
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// Since we have checked the size_in_bytes before and the &bn_size is not NULL, ippsBigNumGetSize never returns failure
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IppStatus error_code = ippsBigNumGetSize(size_in_bytes/(int)sizeof(Ipp32u), &bn_size);
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if (error_code != ippStsNoErr)
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{
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free(pBN);
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return;
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}
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// Clear the buffer before free.
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memset_s(pBN, bn_size, 0, bn_size);
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free(pBN);
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return;
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}
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IppStatus __STDCALL sgx_ipp_DRNGen(Ipp32u* pRandBNU, int nBits, void* pCtx)
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{
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sgx_status_t sgx_ret;
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UNUSED(pCtx);
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if (0 != nBits % 8)
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{
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// Must be byte aligned
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return ippStsSizeErr;
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}
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if (!pRandBNU)
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{
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return ippStsNullPtrErr;
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}
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sgx_ret = sgx_read_rand((uint8_t*)pRandBNU, (uint32_t)nBits / 8);
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if (SGX_SUCCESS != sgx_ret)
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{
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return ippStsErr;
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}
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return ippStsNoErr;
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}
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