*	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Creates commands
 *
 *-------------------------------------------------------------------
 */
int Tls_KeyCommands(Tcl_Interp *interp) {
    Tcl_CreateObjCommand(interp, "tls::hkdf", KDF_HKDF, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::pbkdf2", KDF_PBKDF2, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::scrypt", KDF_Scrypt, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}