Rust library for encoding binary data using zero-width characters. Also optionally includes helpers for compressing, encrypting and hiding data inside strings, and a CLI wrapping that functionality.
Try out the WebAssembly compiled version !
There is a WebAssembly compiled version of the tool available. No need to install anything, just open the page in any modern browser and let the magic happen.
Alternatively, you can clone this repository and run cargo install --path cli to install the command-line version of the tool on your system. The binary will be available as zwcamo.
StegCloak popped on my GitHub dashboard feed and I thought it was pretty cool, and decided to reimplement it myself for fun.
The basic encoding feature just converts each byte to anywhere between two and four zero-width unicode characters (depending on which bit patterns are used for compression), and vice-versa for decoding. Data is optionally compressed using Brotli and encrypted using ChaCha20-Poly1305.
On an i7-7700HQ @ 2.80GHz, roundtrip throughput for the sample text data was around 15 MiB/s for basic encoded and compressed data, and around 280 KiB/s for basic encoded and compressed, encrypted, quality 10 Brotli compressed data. You can run the benchmarks yourself for full results using cargo bench.
The core encoding and decoding iterators do not do any heap allocation and support no_std. Extra helpers that require std are included by default but can be discarded by setting default-features to false.