mirror of
https://github.com/intel/linux-sgx
synced 2026-06-08 14:49:32 +00:00
Angie Chinchilla
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>
64 lines
2.7 KiB
C++
64 lines
2.7 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 "arch.h"
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#include "sgx_tcrypto.h"
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#include "pek_pub_key.h"
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#include "pve_qe_common.h"
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#include <string.h>
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#include "peksk_pub.hh"
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//Function to verify the ECDSA signature of a PEK
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//SHA1 value for integrity checking is not verified since the ECDSA verification could make sure the integrity at the sametime.
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sgx_status_t check_pek_signature(const signed_pek_t& signed_pek, uint8_t *result)
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{
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sgx_status_t status = SGX_SUCCESS;
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sgx_ecc_state_handle_t handle= 0;
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sgx_ec256_signature_t ec_signature;
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status = sgx_ecc256_open_context(&handle);
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if(SGX_SUCCESS!=status){
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return status;
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}
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se_static_assert(sizeof(ec_signature)==sizeof(signed_pek.pek_signature));
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memcpy(&ec_signature, signed_pek.pek_signature, sizeof(signed_pek.pek_signature));
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SWAP_ENDIAN_32B(ec_signature.x);
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SWAP_ENDIAN_32B(ec_signature.y);
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status = sgx_ecdsa_verify(reinterpret_cast<const uint8_t *>(&signed_pek),
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static_cast<uint32_t>(sizeof(signed_pek.n)+sizeof(signed_pek.e)),
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const_cast<sgx_ec256_public_t *>(&g_pek_pub_key_little_endian),
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&ec_signature,
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result,
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handle);
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(void)sgx_ecc256_close_context(handle);
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return status;
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}
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