Rust wrapper API for using fork of google/private-join-and-compute protocol.

In order to build Private Join and Compute, you need to install Bazel, if you don't have it already. Follow the instructions for your platform on the Bazel website.

In order to run API, you need to install Rust, if you don't have it already. To install Rust follow instructions from this website.

For ease of use, Makefile is used for building and running the application. If you don't have it already you can install it following instructions from this webiste for Windows, or from this webiste for Linux based systems.

First build the project using:

make build

Using this command will build both the private-join-and-compute protocol and the Rust API code.

After this you can start API. Depending on your operating system you will use:

make run-linux

or

make run-windows

These commands will start gpjc server on local machine(localhost).

In case of running the program on multiple machines:

1. Use different version of google/private-join-and-compute intended for use on different machines
2. Edit .env file and set BACKEND_API_ADDRESS value to your backend server address
3. Edit .env file and set DNS_NAME value to DNS name of the machine that runs it (for example client1.ethernal.com)

To run the program with different address(not the localhost) for gpjc server for Windows use:

cargo run --bin gpjc-api -- <address>

For Linux based systems:

cargo run --bin gpjc-api -- <address>

To test out methods you can use(be aware of key duplication when running these commands):

• Start gpjc server:

curl -X POST -d '{"tx_id": "1", "policy_id": "1"}' -H "Content-type: application/json" http:https://localhost:9090/api/start-server

• Start gpjc client:

curl -X POST -d '{"tx_id": "1", "receiver": "M23", "to": "0.0.0.0:10501"}' -H "Content-type: application/json" http:https://localhost:9090/api/start-client