Tor Arti 2.5.0 Released: Stable Counter Galois Onion
The Tor Project announced the release of Arti 2.5.0, a stable version of its Rust implementation of the Tor anonymity protocol. This release introduces Counter Galois Onion (CGO), a new cryptographic protocol designed to improve the security and efficiency of onion service connections.
Background
Tor is a privacy network that anonymizes internet traffic by routing it through multiple relays. "Arti" is a new, re-written implementation of the Tor client in the Rust programming language (instead of the original C code), developed by The Tor Project. This release, version 2.5.0, is notable because it adds support for "Counter Galois Onion" — a codename for a new type of onion service (the hidden websites that run on Tor). The key improvements likely include better performance, security, or cryptographic updates for these hidden services. "Stable" means it's considered ready for production use. For non-expert readers: this matters because it keeps Tor's anonymizing infrastructure modern and secure, which is critical for privacy-sensitive users like journalists, activists, or anyone evading surveillance.