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CentOS 7.0 - man page for tspi_tpm_getcapability (centos section 3)

Tspi_TPM_GetCapability(3)	     Library Functions Manual		Tspi_TPM_GetCapability(3)

			    TCG Software Stack Developer's Reference

NAME
       Tspi_TPM_GetCapability - get information on the capabilities of 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_GetCapability(TSS_HTPM hTPM, 	     TSS_FLAG capArea,
					 UINT32   ulSubCapLength,    BYTE*    rgbSubCap,
					 UINT32*  pulRespDataLength, BYTE**   prgbRespData);

DESCRIPTION
       Tspi_TPM_GetCapability  gets  information on various capabilities of the TPM. This command
       can be used to learn how many PCRs the TPM supports, etc.

PARAMETERS
   hTPM
       The hTPM parameter is used to specify the handle of the TPM object.

   capArea
       The capArea parameter is the flag indicating the attribute to query. Possible values are:

   ulSubCapLength
       The ulSubCapLength parameter is the length in bytes of the rgbSubCap parameter.

   rgbSubCap
       The rgbSubCap parameter is the data indicating the attribute  to  query.  Possible  values
       are:

   pulRespDataLength
       The pulRespDataLength parameter is the length in bytes of the prgbRespData parameter.

   prgbRespData
       The  prgbRespData  parameter  receives  a  pointer to the actual data of the specified at-
       tribute.

NOTES
       The following Capability Areas and Sub-Capability Areas are supported by 1.1 TSS's:

       TSS_TPMCAP_ORD - query whether an ordinal is supported by the TPM.
	       subCaps: TPM_ORD_* (see tcpa_literals.h)

       TSS_TPMCAP_FLAG - query for the volatile and non-volatile flags inside the TPM.	(Must  be
       owner authorized). In this case, the 2 UINT32 values will be returned concatenated togeth-
       er in prgbRespData.
	       subCaps: ignored.

       TSS_TPMCAP_ALG - query whether an algorithm is supported by the TPM.
	       subCaps: TSS_ALG_RSA
			TSS_ALG_DES
			TSS_ALG_3DES
			TSS_ALG_SHA
			TSS_ALG_HMAC
			TSS_ALG_AES

       TSS_TPMCAP_PROPERTY - query a property of the TPM.
	       subCaps: TSS_TPMCAP_PROP_PCR
			TSS_TPMCAP_PROP_DIR
			TSS_TPMCAP_PROP_MANUFACTURER
			TSS_TPMCAP_PROP_SLOTS

       TSS_TPMCAP_VERSION - get the TSS_VERSION structure tha identifies the TPM.
	       subCaps: ignored.

RETURN CODES
       Tspi_TPM_GetCapability returns TSS_SUCCESS on success, otherwise one of the following val-
       ues 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_GetCapability conforms to the Trusted Computing Group Software Specification ver-
       sion 1.1 Golden

SEE ALSO
       Tspi_TPM_GetCapabilitySigned(3), Tspi_TPM_GetEvent(3).

TSS 1.1 				    2004-05-25			Tspi_TPM_GetCapability(3)


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