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Tspi_ChangeAuthAsym(3)                TCG Software Stack Developer's Reference


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) utilizing the asymmetric change protocol and assigns
       the object to the policy object. All classes 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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