Asynchronous provably-secure hidden services.
Philippe Camacho, Fernando Krell · IACR Cryptology ePrint Archive · 2017
The client-server architecture is one of the most widely used in the Internet for its simplicity and flexibility. In practice the server is assigned a public address so that its services can be consumed. This makes the server vulnerable to a number of attacks such as Distributed Denial of Service (DDoS), censorship from authoritarian governments or exploitation of software vulnerabilities.