Re: how to send arbitrary data in supplemental data message

[Carolin Latze]

Thanks a lot!!!! Works now.

Carolin

On 05/31/2010 05:43 PM, Nikos Mavrogiannopoulos wrote:
> Carolin Latze wrote:
>
> Here is the trouble maker:
>   _gnutls_buffer_append(buf,
>                  session->security_parameters.extensions.aik_sent->data,
>                  (uint8_t)
> session->security_parameters.extensions.aik_sent->size);
>
> Remove the cast (uint8_t) to solve the issue. You're are effectively
> doing a (mod 256) to the data size.
>
>
> regards,
> Nikos
>
>
>    
> > Hi Nikos,
> >
> > On 05/30/2010 01:05 PM, Nikos Mavrogiannopoulos wrote:
> >      
> > > LATZE Carolin wrote:
> > >
> > >        
> > > > Hi everybody,
> > > >
> > > > I ran again into problems with the supplemental data messages. I
> > > > tried to copy a certificate into the buffer of type gnutls_buffer and
> > > > do not manage to send all 1314 bytes of the certificate. Instead it
> > > > sends only 41 bytes. I tried it with another certificate which
> > > > resulted in 65 bytes sent. This is pretty strange. I expected the
> > > > buffer to stop at a \0 character in the signature, but that does not
> > > > seem to be the case since strlen of the original data results in the
> > > > correct length of 1314. Any ideas?
> > > >
> > > > In order to simplify debugging, I copied my gnutls version including
> > > > the tls-tpm extension (not finished yet, but does not cause crashes
> > > > :-)) onto a server:
> > > > http://diuf.unifr.ch/people/latzec/gnutls-CL-28052010.tar.gz
> > > >
> > > > Furthermore, I uploaded my little sample program as well:
> > > > http://diuf.unifr.ch/people/latzec/sample.tar.gz
> > > >
> > > > I would be happy for any hints or ideas since I am clueless at the
> > > > moment.
> > > >
> > > >          
> > > Could you use debugging output with
> > >     gnutls_global_set_log_function (tls_log_func);
> > >     gnutls_global_set_log_level (level);
> > > ?
> > >
> > >
> > >        
> > Oh sorry, I did that already (with level 3), but forgot to add the file.
> > You find it here:
> >
> > http://diuf.unifr.ch/people/latzec/out
> >
> > Thats the output of the client who is supposed to send the supplemental
> > data.
> >
> > Carolin
> >
> >      
> > > Level 2 should be sufficient.
> > >
> > > regards,
> > > Nikos
> > >
> > >
> > >
> > >
> > >        
> >      
>