mirror of
https://github.com/intel/linux-sgx
synced 2026-06-08 14:49:32 +00:00
Li, Xun
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/*
|
|
* Copyright (C) 2011-2018 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: sgx_verify_report.cpp
|
|
* Description:
|
|
* API for report verification
|
|
*/
|
|
|
|
#include "sgx_utils.h"
|
|
#include "util.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "se_memcpy.h"
|
|
#include "sgx_trts.h"
|
|
#include "sgx_tcrypto.h"
|
|
#include "se_cdefs.h"
|
|
|
|
// add a version to tservice.
|
|
SGX_ACCESS_VERSION(tservice, 3)
|
|
|
|
sgx_status_t sgx_verify_report(const sgx_report_t *report)
|
|
{
|
|
sgx_mac_t mac;
|
|
sgx_key_request_t key_request;
|
|
sgx_key_128bit_t key;
|
|
sgx_status_t err = SGX_ERROR_UNEXPECTED;
|
|
//check parameter
|
|
if(!report||!sgx_is_within_enclave(report, sizeof(*report)))
|
|
{
|
|
return SGX_ERROR_INVALID_PARAMETER;
|
|
}
|
|
|
|
memset(&mac, 0, sizeof(sgx_mac_t));
|
|
memset(&key_request, 0, sizeof(sgx_key_request_t));
|
|
memset(&key, 0, sizeof(sgx_key_128bit_t));
|
|
|
|
//prepare the key_request
|
|
key_request.key_name = SGX_KEYSELECT_REPORT;
|
|
memcpy_s(&key_request.key_id, sizeof(key_request.key_id), &report->key_id, sizeof(report->key_id));
|
|
|
|
//get the report key
|
|
// Since the key_request is not an input parameter by caller,
|
|
// we suppose sgx_get_key would never return the following error code:
|
|
// SGX_ERROR_INVALID_PARAMETER
|
|
// SGX_ERROR_INVALID_ATTRIBUTE
|
|
// SGX_ERROR_INVALID_CPUSVN
|
|
// SGX_ERROR_INVALID_ISVSVN
|
|
// SGX_ERROR_INVALID_KEYNAME
|
|
err = sgx_get_key(&key_request, &key);
|
|
if(err != SGX_SUCCESS)
|
|
{
|
|
return err; // err must be SGX_ERROR_OUT_OF_MEMORY or SGX_ERROR_UNEXPECTED
|
|
}
|
|
//get the report mac
|
|
err = sgx_rijndael128_cmac_msg((sgx_cmac_128bit_key_t*)&key, (const uint8_t *)(&report->body), sizeof(sgx_report_body_t), &mac);
|
|
memset_s (&key, sizeof(sgx_key_128bit_t), 0, sizeof(sgx_key_128bit_t));
|
|
if (SGX_SUCCESS != err)
|
|
{
|
|
if(err != SGX_ERROR_OUT_OF_MEMORY)
|
|
err = SGX_ERROR_UNEXPECTED;
|
|
return err;
|
|
}
|
|
if(consttime_memequal(mac, report->mac, sizeof(sgx_mac_t)) == 0)
|
|
{
|
|
return SGX_ERROR_MAC_MISMATCH;
|
|
}
|
|
else
|
|
{
|
|
return SGX_SUCCESS;
|
|
}
|
|
}
|