Wasm is pretty close to bare metal. Browser-based or server-side JavaScript (or other wasm-using environments) can use the wasm output from this crate to create Sphinx packets at much higher speeds than would be possible using (interpreted) JavaScript. This enables browser-based and mobile applications get stronger privacy, in a way that wasn't previously possible.

Compiling

First, make sure you've got all the Rust wasm toolchain installed. Cross-compilation sounds scary but the Rust crew have enabled a remarkably simple setup.

Using it as a JavaScripter

See our docs.

Demo

There's a demo web application in the js-example folder. To run it, first make sure you've got a recent npm installed, then follow the instructions in its README.

Developing

Whenever you change your Rust, run wasm-pack build to update the built was artefact in the pkg directory.

IMPORTANT!!

You also need to manually copy helpers.js file into the pkg and add it to package.json. I'm 100% sure one of the hundreds JS packagers could do that for us, but I didn't feel like spending 10 hours figuring this one out.