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 containing the PCR data.

RETURN CODES

       Tspi_TPM_PcrRead  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_PcrRead conforms to the Trusted Computing Group  Software  Specification  version
       1.1 Golden

SEE ALSO

       Tspi_TPM_PcrExtend(3).