TCG Software Stack Developer's Reference
NAME¶
Tspi_TPM_StirRandom - add entropy to the TPM random number generator
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_StirRandom(TSS_HTPM hTPM, UINT32 ulEntropyDataLength, BYTE* rgbEntropyData);
DESCRIPTION¶
Tspi_TPM_StirRandom adds entropy to the TPM random number generator for
the purpose of generating better random numbers. The
entropy variable
should assigned an appropriately seeded random number before this function is
called.
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.
ulEntropyDataLength¶
The
ulEntropyDataLength parameter is the length in bytes of the
rgbEntropyData parameter.
rgbEntropyData¶
The
rgbEntropyData parameter is a pointer to the entropy data.
RETURN CODES¶
Tspi_TPM_StirRandom 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_StirRandom conforms to the Trusted Computing Group Software
Specification version 1.1 Golden
SEE ALSO¶
Tspi_TPM_GetRandom(3).