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 Copyright (C) 2004 International Business Machines Corporation 
 Written by Kathy Robertson based on the Trusted Computing Group Software Stack Specification Version 1.1 Golden 
 
 
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 "Tspi_PcrComposite_GetPcrValue" 3 "2004-05-26" "TSS 1.1" "TCG Software Stack Developer's Reference" 
 NAME 
Tspi_PcrComposite_GetPcrValue - get the digest value of a given PCR index inside a PCR composite object. 

 "SYNOPSIS" 
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 #include <tss/platform.h>   #include <tss/tcpa_defines.h>   #include <tss/tcpa_typedef.h>   #include <tss/tcpa_struct.h>   #include <tss/tss_typedef.h>   #include <tss/tss_structs.h>   #include <tss/tspi.h>   "TSS_RESULT Tspi_PcrComposite_GetPcrValue(TSS_HPCRS " hPcrComposite ", UINT32 " ulPcrIndex ","   " UINT32* " ulPcrValueLength ", BYTE** " rgbPcrValue ");"  
 
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 "DESCRIPTION" 
 
Tspi_PcrComposite_GetPcrValue returns the digest value of a given PCR index inside a PCR composite object. 

 "PARAMETERS" 
 

 hPcrComposite 
Handle of the PCR composite object instance where a PCR value should be returned. 

 

 ulPcrIndex 
This parameter indicates the index of the PCR to read. 

 

 ulPcrValueLength 
The length (in bytes) of the rgbPcrValue parameter. 

 

 rgbPcrValue 
After successful completion this parameter recieves a pointer to the memory block containing the PCR value of the PCR indicated by ulPcrIndex. 

 "RETURN CODES" 
 
Tspi_PcrComposite_GetPcrValue returns TSS_SUCCESS on success, otherwise one of the following values are returned: 

 
 TSS_E_INVALID_HANDLE - Either hPcrComposite or ulPcrIndex is an invalid parameter.  
 
 TSS_E_INTERNAL_ERROR - An error occurred internal to the TSS.   

 "CONFORMING TO" 
 

 
Tspi_PcrComposite_GetPcrValue conforms to the Trusted Computing Group Software Specification version 1.1 Golden 

 "SEE ALSO" 
 

 
Tspi_PcrComposite_SelectPcrIndex(3), Tspi_PcrComposite_SetPcrValue(3).