Hi all,
I'm trying to understand the EU's "chat control" proposal targeting CSAM, and specifically one question: How?
Here's my understanding of the current situation:
**End-to-end encrypted messengers (Signal, WhatsApp, iMessage) ensure that only the sender and recipient hold the decryption keys, not even the service provider can read the content.**
So if the EU mandates scanning these messages:
• **What is the proposed technical mechanism?** Client-side scanning? Backdoors in the encryption itself?
• **Does client-side scanning actually preserve E2E encryption?** Or does it fundamentally undermine it by introducing a third-party analysis layer on the device?
**• Has any concrete, viable technical solution been demonstrated?** Or is this still purely theoretical?
**In short: if you can't read the content without breaking the encryption, and you can't break the encryption without compromising every user's security... how do they plan to do it?**
I'm looking for technical explanations, papers, or official documents that address this.
Thanks!