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Tspi_TPM_PcrRead(3)	    Library Functions Manual	     Tspi_TPM_PcrRead(3)

		    TCG Software Stack Developer's Reference

NAME
     Tspi_TPM_PcrRead - read the value in a PCR register

SYNOPSIS
     #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_TPM_PcrRead(TSS_HTPM hTPM, 	     UINT32 ulPcrIndex,
				 UINT32*  pulPcrValueLength, BYTE** prgbPcrValue);

DESCRIPTION
     Tspi_TPM_PcrRead reads a PCR register to find the current values.

PARAMETERS
   hTPM
     The  hTPM	parameter  is  used to specify the handle of the TPM object. The
     command to get the TPM to test itself will be sent here.

   ulPcrIndex
     The ulPcrIndex parameter is the index of the PCR to read.

   pulPcrValueLength
     The pulPcrValueLength  parameter  receives  the  length  in  bytes  of  the
     prgbPcrValue parameter.

   prgbPcrValue
     The  prgbPcrValue parameter receives a pointer to the memory block contain-
     ing the PCR data.

RETURN CODES
     Tspi_TPM_PcrRead returns TSS_SUCCESS on success, otherwise one of the  fol-
     lowing values is returned:

     TSS_E_INVALID_HANDLE
	    hTPM is not a valid handle.

     TSS_E_INTERNAL_ERROR
	    An internal SW error has been detected.

     TSS_E_BAD_PARAMETER
	    One or more parameters is bad.

CONFORMING TO
     Tspi_TPM_PcrRead  conforms to the Trusted Computing Group Software Specifi-
     cation version 1.1 Golden

SEE ALSO
     Tspi_TPM_PcrExtend(3).

TSS 1.1 			   2004-05-25		     Tspi_TPM_PcrRead(3)

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