Re: [Mip4] Remove nonces description for the generic notification message

["Charles E. Perkins" <charles.perkins at earthlink.net>]

Hello Hui,

Well, in general it is technically better to use nonces.
Nonces don't experience timing skews as clocks do.
Furthermore, in some very small devices, maybe there
wouldn't even be a time-of-day clock.

But those are very general considerations, and you
may have reasons for making the more restrictive
specification.

Regards,
Charlie P.


Hui Deng wrote:
> Dear all,
>
> Thanks alexey's remindness.
> Orginal document says: ""Timestamps is mandatory and nonces is optional"
> we would like to remove nonces description in the document,
>
> Just want to see the mailing list whether there are any objection on it,
>
> thanks
>
> -Hui
>
> 2009/9/6 Alexey Melnikov <alexey.melnikov at isode.com>:
>   
> > > > > 4.2.  Generic Notification Acknowledgment Message
> > > > >
> > > > >  Identification
> > > > >
> > > > >    if the timestamp of the GNM is valid, the receiver copies the
> > > > >    entire Identification field into the GNAM it returns the GNAM
> > > > >    message to the sender. if the timestamp of the GNM is not valid,
> > > > >    the receiver copies only the low-order 32 bits into the GNAM, and
> > > > >    supplies the high-order 32 bits from its own time of day.  Both
> > > > >    GNM and GNAM mandate Timestamps.
> > > > >
> > > > > What about "nonces"? Note that section 4.1 says:
> > > > >           
> > > ==> Removed nonces, hope it is ok for u
> > >
> > >       
> > I don't have strong preference about the fix. You should probably double
> > check with the WG.
> >
> >     
> > > > >  Identification
> > > > >
> > > > >    A 64-bit number, constructed by the sender, used for matching GNM
> > > > >    with GNAM, and for protecting against replay attacks of
> > > > >    notification messages.  Here is the same as Sections 5.4 and 5.7
> > > > >    of [RFC3344].  Timestamps is mandatory and nonces is optional.
> > > > >           
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