Crate tandem_http_server
source ·Expand description
HTTP server for the Tandem SMPC engine.
This crate provides an HTTP server acting as the contributor and running the Tandem Multi-Party
Computation engine. A connecting HTTP client is expected to act as the evaluator.
This crate can be used as either a library or a binary.
As a library, it provides a build function, which can be used to construct a server with
custom logic for choosing its input.
In order to use this crate as a binary, the crate must be compiled with the bin feature. The
server binary supports two modes of execution:
If the server is started without any configuration, it acts as a simple ‘echo server’ and expects the contributor’s input to be supplied by the client (as plaintext metadata). This can be used to test different programs without re-deploying servers.
Alternatively, a static configuration can be provided during server startup, as Tandem.json or
Tandem.toml, describing which MPC function and which contributor input to use based on the
plaintext metadata supplied by the client. These must be stored in the directory from which the
server is going to be started. The directory must also contain a file named program.garble.rs
with the program to run on the SMPC engine.
As the sample server is based on the Rocket framework, it is possible to configure it according to the official Rocket documentation.
Example configuration through env vars:
ROCKET_PORT=8080 tandem_http_server
ROCKET_ADDRESS=127.0.0.1 tandem_http_server