From: A survey and taxonomy of distributed certificate authorities in mobile ad hoc networks
 | Centralized CA | Distributed CA |
---|---|---|
Security | High | Low |
Availability | Low | High |
Fault tolerance | Low | High |
Messaging overhead | Low | High |
Performance | High | Low |
Message exchange | Low | High |
Scalability | High | Low |
Routing dependent | No | Some schemes |
Special nodes | Required | Only PDCA |
User nodes mobility | High | Some scheme |
DCA nodes mobility | Low | High |
Revocation source | Owner issuer | Owner, issuer, k accusation |
Validity of certificate | High | Low |
Messaging complexity | One request, one reply | K Request, K Reply |