Re: Simple Questions re HTTPS

From: Michael Schmidt (NOSPAM_schmidt_at_nue.et-inf.uni-siegen.de)
Date: 01/29/05 

Date: Sat, 29 Jan 2005 10:06:55 +0100

Mailman schrieb:
> Fergus Ryder wrote:
>
>
>>If I submit a web page using HTTPS does the size of the data
>>transferred between the browser and the web server increase as a
>>result, i.e. is it larger than when it is sent over HTTP. If it does,
>>is there a rough percentage anyone knows or could you point me to a
>>relevent resource.
>
>
> No, it does not. The total amount of data transfered over the connection is
> slightly larger than with HTTP due to SSL negotiation (usually a small,
> fixed amount), but actual pages do not change size - they are just
> encrypted.

The payload packets do increase, too. The SSL record protocol adds
headers and MACs to the original payload.

Michael 

-- 
Michael Schmidt
University of Siegen, Germany
http:   www.dcs.uni-siegen.de
e-mail: schmidt _at_ nue.et-inf.uni-siegen.de