Re: [GNU Crypto] exception on multiple SaslConnection.send() calls

[Bryan Hoover]

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Jim Basney wrote:

> Bryan Hoover <address@hidden> wrote:
> > Jim Basney wrote:
> >
> > > Bryan Hoover <address@hidden> wrote:
> > > > Jim Basney wrote:
> > > > > Am I doing something wrong?
> > > >
> > > > Don't comment the reconnect call :).  If possible, the existing 
> > > > connection will be reused,
> > > > so "reconnect" is in a sense, a bit of a misnomer.
> > >
> > > Hmmm.  SaslConnection.reconnect() calls disconnect() then connect(),
> > > which creates a new Socket().  Watching the network with ngrep, I see a
> > > new TCP socket connection after the SaslConnection.reconnect() call.
> >
> > Well, statelessness protocals, and all that you know.
> >
> > But the security session -- that's the time consuming thing you want to 
> > reuse if possible, and
> > that what the lib does, unless, for instance, it's been to long, and 
> > session timed out.  Then
> > you have to renogotiate the security layer -- basically start all over like 
> > a first time
> > connection.
>
> You're saying that I can only call SaslClient.wrap() once, after which I
> have to go through the SaslClient.evaluateChallenge() loop again?

I don't know.

My experience with the routines, and the protocol really, is limited. I helped 
in making passwords
immutible, and have used the routines for stateless authentication -- connect, 
and subsequent
connection with a new socket, with the subsequent connection(s) resulting in 
security session reuse.

BTW, if you go back through evaluateChallenge, the call should not result in 
renegotiation, but
rather, reuse of the preexisting security context.

Assuming you haven't already done it, you might want to google on 'sasl srp 
protocol', and read up
on the ins, and outs of that.

Bryan

> -Jim
>
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