Tspi_TPM_PcrExtend(3)					     Library Functions Manual					     Tspi_TPM_PcrExtend(3)

						     TCG Software Stack Developer's Reference

NAME

       Tspi_TPM_PcrExtend - extend a PCR register and optionally write the PCR event log.

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_PcrExtend(TSS_HTPM	    hTPM,	       UINT32 ulPcrIndex,
				     UINT32	    ulPcrDataLength,   BYTE*  pbPcrData,
				     TSS_PCR_EVENT* pPcrEvent,
				     UINT32*	    pulPcrValueLength, BYTE** prgbPcrValue);

DESCRIPTION

       Tspi_TPM_PcrExtend extends a PCR register and writes the PCR event log if one is supplied by the user.

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 extend.

   ulPcrDataLength
       The ulPcrDataLength parameter is the length in bytes of the pbPcrData parameter.

   pbPcrData
       The pbPcrData parameter is a pointer to data to be hashed by the TSS, which will be used in the extend operation.

   pPcrEvent
       The  pPcrEvent  parameter  is the TSS_PCR_EVENT structure to be passed to the TCS to record the extend event. If pPcrEvent is not NULL, the
       application should fill out the members of the structure that it cares about.

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

   prgbPcrValue
       The prgbPcrValue receives a pointer to the memory block containing the PCR data after the extend operation.

RETURN CODES

       Tspi_TPM_PcrExtend returns TSS_SUCCESS on success, otherwise one of the following 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_PcrExtend conforms to the Trusted Computing Group Software Specification version 1.1 Golden

SEE ALSO

       Tspi_TPM_PcrRead(3).

TSS 1.1 							    2004-05-25						     Tspi_TPM_PcrExtend(3)