linux-sgx-trts-modified/psw/ae/common/pse_pr_common.cpp

/*
 * Copyright (C) 2011-2017 Intel Corporation. All rights reserved.
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 * modification, are permitted provided that the following conditions
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 *     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
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/**
 * File: pse_pr_common.cpp
 * Description: Common code needed between untrusted and enclave
 */

#include "pse_pr_common.h"
#include "pse_pr_sigma_1_1_defs.h"
#include "pse_pr_sigma_common_defs.h"
#include "sgx_tseal.h"
#include "sgx_report.h"
#include "pairing_blob.h"

#include "Epid11_rl.h"

#define MAX_CSR_BYTES   1024


uint32_t NeededBytesForPairingBlob()
{
    return sgx_calc_sealed_data_size(sizeof(se_plaintext_pairing_data_t), sizeof(se_secret_pairing_data_t));
}


uint32_t NeededBytesForREPORT()
{
    return sizeof(sgx_report_t); 
}


uint32_t NeededBytesForS2(uint32_t nCertChain, uint32_t nRL, uint32_t nOcspResp)
{
	uint32_t nRL_VLR = 0;
	
	if (nRL > 0)
	{
        uint32_t nPaddedBytes =  REQUIRED_PADDING_DWORD_ALIGNMENT(nRL);
        nRL_VLR = static_cast<uint32_t>(sizeof(SIGMA_VLR_HEADER)) + nPaddedBytes + nRL;
    }

    uint32_t nFixed = sizeof(SIGMA_S2_MESSAGE);   // Fixed portion of S2
    uint32_t nNeededPr = sizeof(PR_PSE_T);

    return nFixed + nCertChain + nRL_VLR + nOcspResp + nNeededPr; 
}


uint32_t MaxBytesForCSR()
{
    return 1024; 
}