how to send arbitrary data in supplemental data message

Carolin Latze carolin.latze at unifr.ch
Mon May 31 17:15:12 CEST 2010


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
>
>
>
>    





More information about the Gnutls-help mailing list