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Tspi_ChangeAuthAsym(3)	     TCG Software Stack Developer's Reference	   Tspi_ChangeAuthAsym(3)

NAME
       Tspi_ChangeAuthAsym  -  change the authorization data of an entity using asymmetric change
       protocol.

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_ChangeAuthAsym(TSS_HOBJECT hObjectToChange, TSS_HOBJECT hParentObject,
				      TSS_HKEY	  hIdentKey,	   TSS_HPOLICY hNewPolicy);

DESCRIPTION
       Tspi_ChangeAuthAsym  changes the authorization data (secret) of an entity (object) utiliz-
       ing the asymmetric change protocol and assigns the object to the policy object. All class-
       es using secrets provide this method for changing their authorization data.   This  method
       changes	the  authorization  data of an object ensuring that the parent of the object does
       not get knowledge of the new secret.

PARAMETERS
   hObjectToChange
       Handle of the object the authorization data should be changed.

   hParentObject
       Handle of the parent object wrapping the object addressed by hObjectToChange.

   hIdentKey
       Handle of the identity key object required to proof the internally created temporary key.

   hNewPolicy
       Handle of the policy object providing the new authorization data.

RETURN CODES
       Tspi_ChangeAuthAsym returns TSS_SUCCESS on success, otherwise one of the following  values
       are returned:

       TSS_E_INVALID_HANDLE  -	Either hObjectToChange, hParentObject, or hIdentKey is an invalid
       handle.

       TSS_E_INTERNAL_ERROR - An error occurred internal to the TSS.

CONFORMING TO
       Tspi_ChangeAuthAsym conforms to the Trusted Computing Group Software Specification version
       1.1 Golden

SEE ALSO
       Tspi_ChangeAuth(3).

TSS 1.1 				    2004-05-26			   Tspi_ChangeAuthAsym(3)
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