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.\" Copyright (C) 2004 International Business Machines Corporation
.\" Written by Kathy Robertson based on the Trusted Computing Group Software Stack Specification Version 1.1 Golden
.\"
.de Sh \" Subsection
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.TH "Tspi_ChangeAuthAsym" 3 "2004-05-26" "TSS 1.1" "TCG Software Stack Developer's Reference"
.SH NAME
Tspi_ChangeAuthAsym \- change the authorization data of an entity using asymmetric change protocol.
.SH "SYNOPSIS"
.ad l
.hy 0
.B #include <tss/tss.h>
.sp
.BI "TSS_RESULT Tspi_ChangeAuthAsym(TSS_HOBJECT " hObjectToChange ", TSS_HOBJECT " hParentObject ", TSS_HKEY " hIdentKey ", TSS_HPOLICY " hNewPolicy ");"
.sp
.ad
.hy
.SH "DESCRIPTION"
.PP
\fBTspi_ChangeAuthAsym\fR 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.
.SH "PARAMETERS"
.PP
.SS hObjectToChange
Handle of the object the authorization data should be changed.
.PP
.SS hParentObject
Handle of the parent object wrapping the object addressed by hObjectToChange.
.PP
.SS hIdentKey
Handle of the identity key object required to proof the internally created temporary key.
.PP
.SS hNewPolicy
Handle of the policy object providing the new authorization data.
.SH "RETURN CODES"
.PP
\fBTspi_ChangeAuthAsym\fR returns TSS_SUCCESS on success, otherwise one of the following values are returned:
.TP
.SM TSS_E_INVALID_HANDLE - Either \fIhObjectToChange\fR, \fIhParentObject\fR, or \fRhIdentKey\fR is an invalid handle.
.TP
.SM TSS_E_INTERNAL_ERROR - The command failed the test.
.SH "CONFORMING TO"
.PP
\fBTspi_ChangeAuthAsym\fR conforms to the Trusted Computing Group Software Specification version 1.1 Golden
.SH "SEE ALSO"
.PP
\fBTspi_ChangeAuth\fR(3).