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Tspi_TPM_StirRandom(3)                      DragonFly Library Functions Manual

                   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.


CONFORMING TO

       Tspi_TPM_StirRandom conforms to the Trusted Computing Group Software
       Specification version 1.1 Golden


SEE ALSO

       Tspi_TPM_GetRandom(3).

TSS 1.1                           2004-05-25            Tspi_TPM_StirRandom(3)

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