Simple Schemes: Covertness/Bandwidth


Odd/Even Links
Covertness: Requester may ask for any one of half of the links at any given time
Bandwidth: 1-bit per visible HTTP request

Links modulo k
Covertness: Requester asks for any of N/k links
Bandwidth: lg(k) bits per visible HTTP request

Static Mapping
Covertness: potentially quite bad...
Bandwidth: M bits per request