mirror of
https://github.com/intel/linux-sgx
synced 2026-06-08 14:49:32 +00:00
Li, Xun
114 lines
4.0 KiB
C++
114 lines
4.0 KiB
C++
/*
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* Copyright (C) 2011-2020 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 "stdint.h"
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#include "se_sig_rl.h"
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#include "byte_order.h"
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#include "sgx_quote.h"
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#include "se_quote_internal.h"
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uint64_t se_get_sig_rl_size(const se_sig_rl_t *p_sig_rl)
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{
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uint64_t n2 = (p_sig_rl) ? lv_ntohl(p_sig_rl->sig_rl.n2) : 0;
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return(sizeof(se_sig_rl_t) - sizeof(p_sig_rl->sig_rl.bk[0])
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+ n2 * sizeof(p_sig_rl->sig_rl.bk[0]) + 2 * SE_ECDSA_SIGN_SIZE);
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}
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sgx_status_t sgx_calc_quote_size(const uint8_t *sig_rl, uint32_t sig_rl_size, uint32_t* p_quote_size)
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{
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if (!p_quote_size)
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return SGX_ERROR_INVALID_PARAMETER;
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uint64_t quote_size = 0;
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uint64_t sign_size = 0;
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uint64_t n2 = 0;
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const se_sig_rl_t *p_sig_rl = reinterpret_cast<const se_sig_rl_t *>(sig_rl);
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if (sig_rl)
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{
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if (sig_rl_size < sizeof(se_sig_rl_t) ||
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se_get_sig_rl_size(p_sig_rl) != sig_rl_size)
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{
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return SGX_ERROR_INVALID_PARAMETER;
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}
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if (p_sig_rl->protocol_version != SE_EPID_SIG_RL_VERSION
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|| p_sig_rl->epid_identifier != SE_EPID_SIG_RL_ID)
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{
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return SGX_ERROR_INVALID_PARAMETER;
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}
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}
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else if (sig_rl_size != 0)
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return SGX_ERROR_INVALID_PARAMETER;
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n2 = (sig_rl) ? lv_ntohl(p_sig_rl->sig_rl.n2) : 0;
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sign_size = sizeof(EpidSignature) - sizeof(NrProof) + n2 * sizeof(NrProof);
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quote_size = SE_QUOTE_LENGTH_WITHOUT_SIG + sign_size;
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if (quote_size >= 1ull << 32)
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{
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return SGX_ERROR_INVALID_PARAMETER;
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}
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*p_quote_size = static_cast<uint32_t>(quote_size);
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return SGX_SUCCESS;
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}
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sgx_status_t sgx_get_quote_size(const uint8_t *sig_rl, uint32_t* p_quote_size)
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{
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if(!p_quote_size)
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return SGX_ERROR_INVALID_PARAMETER;
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uint64_t quote_size = 0;
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uint64_t sign_size = 0;
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uint64_t n2 = 0;
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const se_sig_rl_t *p_sig_rl = reinterpret_cast<const se_sig_rl_t *>(sig_rl);
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if(sig_rl)
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{
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if(p_sig_rl->protocol_version != SE_EPID_SIG_RL_VERSION
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|| p_sig_rl->epid_identifier != SE_EPID_SIG_RL_ID)
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{
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return SGX_ERROR_INVALID_PARAMETER;
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}
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}
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n2 = (sig_rl) ? lv_ntohl(p_sig_rl->sig_rl.n2) : 0;
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sign_size = sizeof(EpidSignature) - sizeof(NrProof) + n2*sizeof(NrProof);
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quote_size = SE_QUOTE_LENGTH_WITHOUT_SIG + sign_size;
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if (quote_size >= 1ull<<32)
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{
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return SGX_ERROR_INVALID_PARAMETER;
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}
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*p_quote_size = static_cast<uint32_t>(quote_size);
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return SGX_SUCCESS;
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}
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