Counter Galois Onion Strengthens Tor Relay Encryption

Tor introduces Counter Galois Onion (CGO) to regenerate tor1 and harden relay encryption crossed clients and relays. On 24 November 2025 Tor announces adoption of Counter Galois Onion (CGO) for relay encryption, with implementations underway successful Arti (Rust) and C Tor to support circuit postulation from tagging attacks, adhd guardant secrecy, and modernize authenticators; improvement […]