#tor #arti #privacy #anonymity #networking


Library for connecting to the Tor network as an anonymous client

1 unstable release

0.0.0 Jun 24, 2021

#7 in #anonymity


31K SLoC


High-level functionality for accessing the Tor network as a client.


The tor-client crate aims to provide a safe, easy-to-use API for applications that want to use Tor network to anonymize their traffic. It hides most of the underlying detail, letting other crates decide how exactly to use the Tor crate.

This crate is part of Arti, a project to implement Tor in Rust. It is the highest-level library crate in Arti, and the one that nearly all client-only programs should use. Most of its functionality is provided by lower-level crates in Arti.

⚠️Warnings ⚠

Do not expect ANY privacy from this code yet.

Arti is a work in progress, and there are currently certain missing features that will make it far less private than the standard Tor implementation. In fact, the absence of these makes Arti clients vulnerable to certain classes of well known attacks that the standard Tor implementation defends against.

At present, do not expect Arti to give you any privacy at all. (We'll remove or soften this warning once we're more confident in our privacy.)

Do not use this code in production yet.

All of the APIs for this crate, and for Arti in general, are not the least bit stable. If you use this code, please expect your software to break on a regular basis.

Design considerations, privacy considerations.

As we build the APIs for this crate, we've been aiming for simplicity and safety: we want it to be as easy as possible to use tor-client, while trying to make certain kinds of privacy or security violation hard to write accidentally.

Privacy isn't just a drop-in feature, however. There are still plenty of ways to accidentally leak information, even if you're anonymizing your connections over Tor. We'll try to document those in a user's guide at some point as Arti becomes more mature.

Using tor-client

The tor-client crate provides an async Rust API. It is compatible with the tokio and async_std asynchronous backends.

TODO: Good examples here once the crate setup API is more simple.

Feature flags

tokio -- (Default) Build with support for the Tokio backend.

async-std -- Build with support for the async_std backend.

experimental-api -- Build with experimental, unstable API support. Note that these APIs are NOT covered by semantic versioning guarantees: we might break them or remove them between patch versions.

License: MIT OR Apache-2.0


~805K SLoC