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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>
129 lines
4.2 KiB
C++
129 lines
4.2 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 <string.h>
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#include "se_memcpy.h"
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#include "se_error_internal.h"
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#include "uae_service_internal.h"
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#include "launch_checker.h"
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static unsigned int chk_launch_token(
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const enclave_css_t *css,
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const sgx_attributes_t *secs_attr,
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const sgx_launch_token_t *tok)
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{
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const token_t *launch = reinterpret_cast<const token_t *>(tok);
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// Is it a valid launch_token? 0 = Invalid, 1 = Valid.
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if(!launch->body.valid)
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{
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// For Non-Architectural Enclaves: HWVERSION = 0
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// Anyway, EINIT will return SE_INVALID_LAUNCH_TOKEN if the Enclave
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// is not signed by intel key.
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if(0 == css->header.hw_version)
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{
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// If the licese token is invalid, only intel key signed
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// enclave can be lauched.
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return (unsigned int)SE_ERROR_INVALID_LAUNCH_TOKEN;
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}
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else
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{
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// Don't need launch token for intel key signed enclave.
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return (unsigned int)SGX_SUCCESS;
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}
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}
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// The MRENCLAVE should match the one in SIGSTRUCT. We must check
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// it here, becaue EINIT will return SE_INVALID_MEASUREMENT for
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// this case.
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if(memcmp(&launch->body.mr_enclave, &css->body.enclave_hash, sizeof(sgx_measurement_t)))
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{
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return (unsigned int)SE_ERROR_INVALID_LAUNCH_TOKEN;
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}
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// The ATTRIBUTES should match the attributes in SECS.
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if(memcmp(&launch->body.attributes, secs_attr, sizeof(sgx_attributes_t)))
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{
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return (unsigned int)SE_ERROR_INVALID_LAUNCH_TOKEN;
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}
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// Other checks are done in get_secs_attr later.
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return SGX_SUCCESS;
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}
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SGXLaunchToken::SGXLaunchToken(
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const enclave_css_t *css,
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const sgx_attributes_t *secs_attr,
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const sgx_launch_token_t *launch)
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:m_css(css), m_secs_attr(secs_attr), m_launch_updated(false)
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{
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memcpy_s(m_launch, sizeof(m_launch), launch, sizeof(m_launch));
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}
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bool SGXLaunchToken::is_launch_updated() const
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{
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return m_launch_updated;
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}
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sgx_status_t SGXLaunchToken::get_launch_token(sgx_launch_token_t *tok) const
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{
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if (memcpy_s(tok, sizeof(m_launch), &m_launch, sizeof(m_launch)))
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return SGX_ERROR_UNEXPECTED;
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return SGX_SUCCESS;
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}
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sgx_status_t SGXLaunchToken::update_launch_token(
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bool force_update_tok)
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{
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sgx_status_t status = SGX_SUCCESS;
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if (force_update_tok ||
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SE_ERROR_INVALID_LAUNCH_TOKEN == chk_launch_token(m_css, m_secs_attr, &m_launch))
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{
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status = ::get_launch_token(m_css, m_secs_attr, &m_launch);
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if (status == SGX_SUCCESS)
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m_launch_updated = true;
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else
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return status;
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}
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return status;
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}
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