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71 lines
3.0 KiB
C++
71 lines
3.0 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 "provision_msg.h"
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#include <sgx_trts.h>
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#include "protocol.h"
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#include "helper.h"
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#include "cipher.h"
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#include <string.h>
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//Function to generate 1 byte selector id for end point selection
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//The End Point Selection is an optional protocol before SGX EPID Provisioning
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// to get the server address and expired date(of the server) for SGX EPID Provisioning
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// a one byte selector id is required for each machine which never changes for any machine
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// First byte of PPID is used currently as the selector id
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static pve_status_t gen_es_selector_id(uint8_t *selector_id)
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{
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ppid_t ppid;
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memset(&ppid, 0, sizeof(ppid));
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pve_status_t ret = get_ppid(&ppid);
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if(ret != PVEC_SUCCESS)
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return ret;
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*selector_id = ppid.ppid[0];
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(void)memset_s(&ppid, sizeof(ppid), 0, sizeof(ppid));//clear the PPID in stack
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return PVEC_SUCCESS;
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}
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//Function to generate End Point Selection id and XID for end point selection msg1
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//@es_selector, output XID and SelectorID
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//@return PVEC_SUCCESS on success or error code otherwise
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pve_status_t gen_es_msg1_data(gen_endpoint_selection_output_t *es_selector)
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{
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//randomly generate xid
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pve_status_t ret = se_read_rand_error_to_pve_error(sgx_read_rand(es_selector->xid, XID_SIZE));
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if(ret != PVEC_SUCCESS)
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return ret;
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//generate selector id which is hash value of Provisioning Base Key
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return gen_es_selector_id(&es_selector->selector_id);
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}
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