Interoperability in End-to-End Encrypted Messaging

ePrint Report: Interoperability in End-to-End Encrypted Messaging

Julia Len, Esha Ghosh, Paul Grubbs, Paul Rösler

The Digital Markets Act (DMA) is a nascent European Union regulation adopted in May 2022. One of its most controversial provisions is a requirement that so-called “gatekeepers” offering end-to-end encrypted messaging apps, such as WhatsApp, implement “interoperability” with other messaging apps: in essence, encrypted messaging across service providers. This requirement represents a fundamental shift in the design assumptions of existing encrypted messaging systems, most of …

act apps called design digital digital markets act dma encrypted encrypted messaging end end-to-end eprint report european union interoperability markets may may 2022 messaging messaging apps paul regulation report service service providers whatsapp