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- /*
- * Copyright (C) 2011-2017 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.
- *
- */
- #include "../TrustedInclude/LA.h"
- dh_session_t LA::global_session_info;
- //Handle the request from Source Enclave for a session
- uint32_t LA::session_request(sgx_dh_msg1_t *dh_msg1, uint32_t *session_id)
- {
- sgx_dh_session_t sgx_dh_session;
- sgx_status_t status = SGX_SUCCESS;
- if(!session_id || !dh_msg1)
- {
- return INVALID_PARAMETER_ERROR;
- }
- //Intialize the session as a session responder
- status = sgx_dh_init_session(SGX_DH_SESSION_RESPONDER, &sgx_dh_session);
- if(SGX_SUCCESS != status)
- {
- return status;
- }
- *session_id=1;
- LA::global_session_info.status = IN_PROGRESS;
- //Generate Message1 that will be returned to Source Enclave
- status = sgx_dh_responder_gen_msg1((sgx_dh_msg1_t*)dh_msg1, &sgx_dh_session);
- if(SGX_SUCCESS != status)
- return status;
- memcpy(&global_session_info.in_progress.dh_session, &sgx_dh_session, sizeof(sgx_dh_session_t));
- return 0;
- }
- //Verify Message 2, generate Message3 and exchange Message 3 with Source Enclave
- uint32_t LA::exchange_report(sgx_dh_msg2_t *dh_msg2, sgx_dh_msg3_t *dh_msg3, uint32_t* session_id,
- sgx_key_128bit_t* dh_aek,
- sgx_dh_session_enclave_identity_t* initiator_identity
- )
- {
- uint32_t status = 0;
- sgx_dh_session_t sgx_dh_session;
- memset(dh_aek,0, sizeof(sgx_key_128bit_t));
- if(!dh_msg2 || !dh_msg3)
- return INVALID_PARAMETER_ERROR;
- if(global_session_info.status != IN_PROGRESS)
- return INVALID_SESSION;
- memcpy(&sgx_dh_session, &global_session_info.in_progress.dh_session, sizeof(sgx_dh_session_t));
- dh_msg3->msg3_body.additional_prop_length = 0;
- //Process message 2 from source enclave and obtain message 3
- if(dh_aek == nullptr)
- return 0xff;
- if(initiator_identity != nullptr && dh_msg2 != nullptr && dh_msg3 != nullptr)
- status = sgx_dh_responder_proc_msg2(dh_msg2, dh_msg3, &sgx_dh_session, dh_aek, initiator_identity);
- return status;
- /*
- //save the session ID, status and initialize the session nonce
- global_session_info.session_id = *session_id;
- global_session_info.status = ACTIVE; // This means that you can't keep calling exchange_report over and over again.
- global_session_info.active.counter = 0;
- memcpy(&global_session_info.active.AEK, &dh_aek, sizeof(sgx_key_128bit_t));
- memset(&dh_aek,0, sizeof(sgx_key_128bit_t));
- */
- }
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