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437 lines
15 KiB
C++
437 lines
15 KiB
C++
#ifndef libhis_quote_hpp
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#define libhis_quote_hpp
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#ifdef WINDOWS
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#include "tspi.h"
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#include "tss_error.h"
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#include "tss_defines.h"
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#endif
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#ifdef LINUX
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#include <tss/tspi.h>
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#include <tss/tss_error.h>
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#include <tss/tss_defines.h>
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#endif
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#include "libhis_exception.hpp"
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#include "libhis_utils.hpp"
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class libhis_quote
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{
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public:
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libhis_quote()
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{
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//set default values
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init_ik_size = TSS_KEY_SIZE_DEFAULT;
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init_ik_type = TSS_KEY_TYPE_IDENTITY;
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init_ik_authorized = TSS_KEY_AUTHORIZATION;
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init_ik_migratable = TSS_KEY_NOT_MIGRATABLE;
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init_ik_volatile = TSS_KEY_VOLATILE;
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binitialized = false;
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//create a context object
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result = Tspi_Context_Create(&hcontext);
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if(result != TSS_SUCCESS) throw libhis_exception("Create Conntext", result);
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//create an SRK object
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result = Tspi_Context_CreateObject(hcontext, TSS_OBJECT_TYPE_RSAKEY, TSS_KEY_TSP_SRK, &hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Create SRK", result);
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//Create SRK policy
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result = Tspi_Context_CreateObject(hcontext, TSS_OBJECT_TYPE_POLICY, TSS_POLICY_USAGE, &hpolicy_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Create SRK Policy", result);
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//Create IK policy
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result = Tspi_Context_CreateObject(hcontext, TSS_OBJECT_TYPE_POLICY, TSS_POLICY_USAGE, &hpolicy_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Create IK Policy", result);
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}
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void init(bool bshort)
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{
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if(bshort)
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{
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//Create PCRS object
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result = Tspi_Context_CreateObject(hcontext, TSS_OBJECT_TYPE_PCRS, TSS_PCRS_STRUCT_INFO_SHORT, &hpcrs);
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if(result != TSS_SUCCESS) throw libhis_exception("Create PCRS", result);
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}
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else
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{
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//Create PCRS object
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result = Tspi_Context_CreateObject(hcontext, TSS_OBJECT_TYPE_PCRS, TSS_PCRS_STRUCT_INFO, &hpcrs);
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if(result != TSS_SUCCESS) throw libhis_exception("Create PCRS", result);
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}
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//combine the init flags
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init_ik = init_ik_size | init_ik_type | init_ik_authorized | init_ik_migratable | init_ik_volatile;
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//Create IK object
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result = Tspi_Context_CreateObject(hcontext, TSS_OBJECT_TYPE_RSAKEY, init_ik, &hkey_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Create IK", result);
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binitialized = true;
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}
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void quote(
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unsigned char *auth_srk_value,
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unsigned long auth_srk_size,
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bool auth_srk_sha1,
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unsigned char *auth_ik_value,
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unsigned long auth_ik_size,
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bool auth_ik_sha1,
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unsigned char *nonce,
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unsigned char *uuid_ik_value,
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unsigned char *mask,
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unsigned char *&output_pcrs_value,
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unsigned long &output_pcrs_size,
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unsigned char *&output_quote_value,
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unsigned long &output_quote_size,
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unsigned char *&output_sig_value,
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unsigned long &output_sig_size)
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{
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//establish a session
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result = Tspi_Context_Connect(hcontext, 0);
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if(result != TSS_SUCCESS) throw libhis_exception("Connect Context", result);
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//get the TPM object
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result = Tspi_Context_GetTpmObject(hcontext, &htpm);
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if(result != TSS_SUCCESS) throw libhis_exception("Get TPM Object", result);
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//load the SRK
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TSS_UUID uuid_srk = TSS_UUID_SRK;
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result = Tspi_Context_LoadKeyByUUID(hcontext, TSS_PS_TYPE_SYSTEM, uuid_srk, &hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Load SRK", result);
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//set up SRK auth
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if(auth_srk_sha1)
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{
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result = Tspi_Policy_SetSecret(hpolicy_srk, TSS_SECRET_MODE_SHA1, auth_srk_size, auth_srk_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set SRK Secret SHA1", result);
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}
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else
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{
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result = Tspi_Policy_SetSecret(hpolicy_srk, TSS_SECRET_MODE_PLAIN, auth_srk_size, auth_srk_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set SRK Secret Plain", result);
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}
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//assign the SRK auth
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result = Tspi_Policy_AssignToObject(hpolicy_srk, hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Assign SRK Secret", result);
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//Set up the IK UUID
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hextouuid(uuid_ik_value, uuid_ik);
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//Get the IK by UUID
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result = Tspi_Context_GetKeyByUUID(hcontext, TSS_PS_TYPE_SYSTEM, uuid_ik, &hkey_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Get IK by UUID", result);
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//set up IK auth
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if(auth_ik_sha1)
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{
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result = Tspi_Policy_SetSecret(hpolicy_ik, TSS_SECRET_MODE_SHA1, auth_ik_size, auth_ik_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set IK Secret SHA1", result);
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}
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else
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{
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result = Tspi_Policy_SetSecret(hpolicy_ik, TSS_SECRET_MODE_PLAIN, auth_ik_size, auth_ik_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set IK Secret Plain", result);
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}
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//assign the IK auth
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result = Tspi_Policy_AssignToObject(hpolicy_ik, hkey_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Assign IK Secret", result);
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//Unwrap the IK
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result = Tspi_Key_LoadKey(hkey_ik, hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Unwrap IK", result);
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//set up nonce
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validation.ulExternalDataLength = 20;
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validation.rgbExternalData = nonce;
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//set up mask
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bool bitmask[24];
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for(short i = 0; i < 24; i++)
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bitmask[i] = 0;
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masktobitmask(mask, bitmask);
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//prepare the PCR output array
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short counter = 0;
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for(short i = 0; i < 24; i++)
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if(bitmask[i]) counter++;
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output_pcrs_size = counter * 20;
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output_pcrs_value = new unsigned char[counter * 20];
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//collect the PCR values
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UINT32 temp_size;
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BYTE *temp_value;
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counter = 0;
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for(unsigned long i = 0; i < 24; i++)
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{
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if(bitmask[i])
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{
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result = Tspi_TPM_PcrRead(htpm, i, &temp_size, &temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("PCR value read", result);
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result = Tspi_PcrComposite_SelectPcrIndex(hpcrs, i);
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if(result != TSS_SUCCESS) throw libhis_exception("Set PCR composite index", result);
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result = Tspi_PcrComposite_SetPcrValue(hpcrs, i, temp_size, temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Store PCR value in composite", result);
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for(unsigned long j = 0; j < 20; j++)
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output_pcrs_value[counter * 20 + j] = temp_value[j];
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counter++;
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result = Tspi_Context_FreeMemory(hcontext, temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Clear temporary memory", result);
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}
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}
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//quote
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result = Tspi_TPM_Quote(htpm, hkey_ik, hpcrs, &validation);
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if(result != TSS_SUCCESS) throw libhis_exception("Quote", result);
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//copy values
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output_quote_size = validation.ulDataLength;
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output_quote_value = new unsigned char[validation.ulDataLength];
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for(unsigned long i = 0; i < validation.ulDataLength; i++)
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output_quote_value[i] = validation.rgbData[i];
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result = Tspi_Context_FreeMemory(hcontext, validation.rgbData);
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if(result != TSS_SUCCESS) throw libhis_exception("Clean up digest", result);
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output_sig_size = validation.ulValidationDataLength;
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output_sig_value = new unsigned char [validation.ulValidationDataLength];
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for(unsigned long i = 0; i < validation.ulValidationDataLength; i++)
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output_sig_value[i] = validation.rgbValidationData[i];
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result = Tspi_Context_FreeMemory(hcontext, validation.rgbValidationData);
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if(result != TSS_SUCCESS) throw libhis_exception("Clean up signature", result);
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return;
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}
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void quote2(
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unsigned char *auth_srk_value,
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unsigned long auth_srk_size,
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bool auth_srk_sha1,
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unsigned char *auth_ik_value,
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unsigned long auth_ik_size,
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bool auth_ik_sha1,
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unsigned char *nonce,
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unsigned char *uuid_ik_value,
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unsigned char *mask,
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unsigned char *&output_pcrs_value,
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unsigned long &output_pcrs_size,
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unsigned char *&output_quote_value,
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unsigned long &output_quote_size,
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unsigned char *&output_sig_value,
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unsigned long &output_sig_size,
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bool bCapVersion)
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{
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//establish a session
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result = Tspi_Context_Connect(hcontext, 0);
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if(result != TSS_SUCCESS) throw libhis_exception("Connect Context", result);
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//get the TPM object
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result = Tspi_Context_GetTpmObject(hcontext, &htpm);
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if(result != TSS_SUCCESS) throw libhis_exception("Get TPM Object", result);
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//load the SRK
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TSS_UUID uuid_srk = TSS_UUID_SRK;
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result = Tspi_Context_LoadKeyByUUID(hcontext, TSS_PS_TYPE_SYSTEM, uuid_srk, &hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Load SRK", result);
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//set up SRK auth
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if(auth_srk_sha1)
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{
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result = Tspi_Policy_SetSecret(hpolicy_srk, TSS_SECRET_MODE_SHA1, auth_srk_size, auth_srk_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set SRK Secret SHA1", result);
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}
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else
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{
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result = Tspi_Policy_SetSecret(hpolicy_srk, TSS_SECRET_MODE_PLAIN, auth_srk_size, auth_srk_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set SRK Secret Plain", result);
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}
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//assign the SRK auth
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result = Tspi_Policy_AssignToObject(hpolicy_srk, hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Assign SRK Secret", result);
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//Set up the IK UUID
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hextouuid(uuid_ik_value, uuid_ik);
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//Get the IK by UUID
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result = Tspi_Context_GetKeyByUUID(hcontext, TSS_PS_TYPE_SYSTEM, uuid_ik, &hkey_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Get IK by UUID", result);
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//set up IK auth
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if(auth_ik_sha1)
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{
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result = Tspi_Policy_SetSecret(hpolicy_ik, TSS_SECRET_MODE_SHA1, auth_ik_size, auth_ik_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set IK Secret SHA1", result);
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}
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else
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{
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result = Tspi_Policy_SetSecret(hpolicy_ik, TSS_SECRET_MODE_PLAIN, auth_ik_size, auth_ik_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Set IK Secret Plain", result);
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}
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//assign the IK auth
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result = Tspi_Policy_AssignToObject(hpolicy_ik, hkey_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Assign IK Secret", result);
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//Unwrap the IK
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result = Tspi_Key_LoadKey(hkey_ik, hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Unwrap IK", result);
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//set up nonce
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validation.ulExternalDataLength = 20;
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validation.rgbExternalData = nonce;
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//set up mask
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bool bitmask[24];
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for(short i = 0; i < 24; i++)
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bitmask[i] = 0;
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masktobitmask(mask, bitmask);
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//prepare the PCR output array
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short counter = 0;
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for(short i = 0; i < 24; i++)
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if(bitmask[i]) counter++;
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output_pcrs_size = counter * 20;
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output_pcrs_value = new unsigned char[counter * 20];
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//collect the PCR values
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UINT32 temp_size;
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BYTE *temp_value;
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counter = 0;
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for(unsigned long i = 0; i < 24; i++)
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{
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if(bitmask[i])
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{
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result = Tspi_TPM_PcrRead(htpm, i, &temp_size, &temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("PCR value read", result);
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result = Tspi_PcrComposite_SelectPcrIndexEx(hpcrs, i, TSS_PCRS_DIRECTION_RELEASE);
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if(result != TSS_SUCCESS) throw libhis_exception("Set PCR composite index", result);
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result = Tspi_PcrComposite_SetPcrValue(hpcrs, i, temp_size, temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Store PCR value in composite", result);
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for(unsigned long j = 0; j < 20; j++)
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output_pcrs_value[counter * 20 + j] = temp_value[j];
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counter++;
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result = Tspi_Context_FreeMemory(hcontext, temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Clear temporary memory", result);
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}
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}
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//quote2
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BYTE* version_value;
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UINT32 version_size;
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//read PCR 10 again right before collecting the quote
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if(bitmask[10])
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{
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//reread PCR 10
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result = Tspi_TPM_PcrRead(htpm, 10, &temp_size, &temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("PCR value read", result);
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//read quote2
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result = Tspi_TPM_Quote2(htpm, hkey_ik, bCapVersion, hpcrs, &validation, &version_size, &version_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Quote2", result);
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//set value of PCR 10 in the PCR Composite
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result = Tspi_PcrComposite_SetPcrValue(hpcrs, 10, temp_size, temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Store PCR value in composite", result);
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for(unsigned long j = 0; j < 20; j++)
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output_pcrs_value[10 * 20 + j] = temp_value[j];
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result = Tspi_Context_FreeMemory(hcontext, temp_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Clear temporary memory", result);
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} else {
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//read quote2 without rereading PCR 10
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result = Tspi_TPM_Quote2(htpm, hkey_ik, bCapVersion, hpcrs, &validation, &version_size, &version_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Quote2", result);
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}
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//copy values
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output_quote_size = validation.ulDataLength;
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output_quote_value = new unsigned char[validation.ulDataLength];
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for(unsigned long i = 0; i < validation.ulDataLength; i++)
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output_quote_value[i] = validation.rgbData[i];
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result = Tspi_Context_FreeMemory(hcontext, validation.rgbData);
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if(result != TSS_SUCCESS) throw libhis_exception("Clean up digest", result);
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output_sig_size = validation.ulValidationDataLength;
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output_sig_value = new unsigned char [validation.ulValidationDataLength];
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for(unsigned long i = 0; i < validation.ulValidationDataLength; i++)
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output_sig_value[i] = validation.rgbValidationData[i];
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result = Tspi_Context_FreeMemory(hcontext, validation.rgbValidationData);
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if(result != TSS_SUCCESS) throw libhis_exception("Clean up signature", result);
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result = Tspi_Context_FreeMemory(hcontext, version_value);
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if(result != TSS_SUCCESS) throw libhis_exception("Clean up version info", result);
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return;
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}
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~libhis_quote()
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{
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//clean up IK policy
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result = Tspi_Context_CloseObject(hcontext, hpolicy_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Close IK Policy", result);
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if(binitialized)
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{
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//clean up PCRS
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result = Tspi_Context_CloseObject(hcontext, hpcrs);
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if(result != TSS_SUCCESS) throw libhis_exception("Close PCRS", result);
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//clean up IK
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result = Tspi_Context_CloseObject(hcontext, hkey_ik);
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if(result != TSS_SUCCESS) throw libhis_exception("Close IK", result);
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}
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//clean up SRK policy
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result = Tspi_Context_CloseObject(hcontext, hpolicy_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Close SRK Policy", result);
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//clean up SRK object
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result = Tspi_Context_CloseObject(hcontext, hkey_srk);
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if(result != TSS_SUCCESS) throw libhis_exception("Close SRK", result);
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//close context
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result = Tspi_Context_Close(hcontext);
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if(result != TSS_SUCCESS) throw libhis_exception("Close Context", result);
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}
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private:
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TSS_RESULT result;
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TSS_HCONTEXT hcontext;
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TSS_HTPM htpm;
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TSS_HKEY hkey_srk,
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hkey_ik;
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TSS_HPOLICY hpolicy_srk,
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hpolicy_ik;
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TSS_NONCE nonce;
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TSS_VALIDATION validation;
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TSS_UUID uuid_ik;
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TSS_HPCRS hpcrs;
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UINT32 init_ik,
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init_ik_size,
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init_ik_type,
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init_ik_authorized,
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init_ik_migratable,
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init_ik_volatile;
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bool binitialized;
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};
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#endif
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