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)