Table 2 Comparison of PDCA and FDCA
From: A survey and taxonomy of distributed certificate authorities in mobile ad hoc networks
| Â | PDCA | FDCA |
|---|---|---|
Client to DCA communication | One-to-many | One-to-many |
DCA to client communication | Many to one | Many to one |
Security | Higher than FDCA | Low |
Availability | Lower than FDCA | High |
Fault tolerance | Lower than FDCA | High |
Mobility support | Low | High |
Secret update | Multicast | Broadcast |
Client distance from DCA | One hop or more | One hop |
Network size | Large networks | Small networks |
Scalability | High | Low |
Special nodes | Required | Not Required |
IDS or additional monitoring | Not required | Required |