pyxart

Python implementation of Asynchronous Ratchet Trees

Setup

Install (conda + pip)

conda create --name <venv name> python=3.10
pip install .

gRPC and protobuf

python -m grpc_tools.protoc -I src/pyxart/protobuf --python_out=. --grpc_python_out=. src/pyxart/protobuf/*

start server

python demo_server.py

start client

python demo_client.py <client_name>

Orchestration

Create four shells A, B, C, and D

In A,

python demo_server.py Alice
register

In B

python demo_client.py Bob
register

In C

python demo_client.py Charlie
register

In D

python demo_client.py Dave
register

In B

create_group charlie dave

In C, D

get_my_groups

In B

send_message <group_name_from_previous_output> <plain text message>

In C, D

get_messages <group_name>

Demo

The following screenshot shows a demo of a grpc server and four clients.

references

• https://research.facebook.com/publications/on-ends-to-ends-encryption-asynchronous-group-messaging-with-strong-security-guarantees/