mirror of
https://github.com/intel/linux-sgx
synced 2026-06-08 14:49:32 +00:00
Li, Xun
114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
/*
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* Copyright (C) 2011-2018 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 "stdlib.h"
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#include "string.h"
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#include "pve_qe_common.h"
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#include "assert.h"
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#include "util.h"
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#include "sgx_trts.h"
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#include "isk_pub.hh"
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/*
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* Function used to get ECP context.
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*
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* @param pp_new_ecp[out] Used to get the pointer of ECP context.
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* @return IppStatus ippStsNoErr or other error cases.
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*/
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IppStatus new_std_256_ecp(IppsECCPState **pp_new_ecp)
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{
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int ctx_size = 0;
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IppStatus ipp_ret = ippStsNoErr;
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IppsECCPState* p_ctx = NULL;
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ipp_ret = ippsECCPGetSize(256, &ctx_size);
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if(ippStsNoErr != ipp_ret)
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return ipp_ret;
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p_ctx = (IppsECCPState*)malloc(ctx_size);
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if(NULL == p_ctx)
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return ippStsNoMemErr;
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ipp_ret = ippsECCPInit(256, p_ctx);
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if(ippStsNoErr != ipp_ret)
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{
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free(p_ctx);
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return ipp_ret;
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}
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ipp_ret = ippsECCPSetStd(IppECCPStd256r1, p_ctx);
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if(ippStsNoErr != ipp_ret)
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{
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free(p_ctx);
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return ipp_ret;
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}
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*pp_new_ecp = p_ctx;
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return ipp_ret;
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}
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/*
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* Function used to free ECP context.
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*
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* @param p_ecp[out] Pointer of ECP context.
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*/
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void secure_free_std_256_ecp(IppsECCPState *p_ecp)
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{
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int ctx_size = 0;
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IppStatus ipp_ret = ippStsNoErr;
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if(p_ecp)
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{
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ipp_ret = ippsECCPGetSize(256, &ctx_size);
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if(ippStsNoErr == ipp_ret)
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memset_s(p_ecp, ctx_size, 0, ctx_size);
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free(p_ecp);
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}
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return;
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}
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int __STDCALL epid_random_func(
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unsigned int *p_random_data,
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int bits,
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void* p_user_data)
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{
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UNUSED(p_user_data);
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assert(!(bits % 8));
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if(SGX_SUCCESS != sgx_read_rand((uint8_t *)p_random_data,
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ROUND_TO(bits, 8) / 8))
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return ippStsErr;
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return ippStsNoErr;
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}
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