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tspi_tpm_getrandom

Tspi_TPM_GetRandom(3)					     Library Functions Manual					     Tspi_TPM_GetRandom(3)

						     TCG Software Stack Developer's Reference

NAME

       Tspi_TPM_GetRandom - generate a random number on the TPM

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_GetRandom(TSS_HTPM hTPM, UINT32 size, BYTE** random);

DESCRIPTION

       Tspi_TPM_GetRandom gets a good random number for the purpose of generating symmetric keys, nonces, or seeding a random number generator.

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.

   size
       The size parameter is the number of random bytes requested.

   random
       The  random  parameter  is a pointer to memory containing the random data. This is where the generated number goes. Because this internally
       allocates memory, Tspi_Context_FreeMemory should also be used.

RETURN CODES

       Tspi_TPM_GetRandom 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_GetRandom conforms to the Trusted Computing Group Software Specification version 1.1 Golden

SEE ALSO

       Tspi_Context_FreeMemory(3).

TSS 1.1 							    2004-05-25						     Tspi_TPM_GetRandom(3)