publication
2025
Auditing Key Transparency
Contributors
Mari Galicer, Kevin Lewi, Thibault Meunier
Details
Real World Crypto Symposium 2025. Sofia, Bulgaria. March 2025.
Abstract
In 2023, WhatsApp announced its deployment of key transparency, a feature which aims to decrease the trust placed on a centralized server when distributing public keys used for end-to-end encrypted messaging. Similar deployments have been announced for Apple iMessage and ProtonMail. This talk discusses the integration between WhatsApp and Cloudflare to audit the key transparency data structure within a live environment.