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