ZERO-KNOWLEDGE E2E FOR MOBILE-TO-DESKTOP CODING AGENTS, DONE SIMPLY
A small team shows a clean end-to-end encryption pattern that keeps your server blind while a mobile app drives a local coding agent. The [post](https://dev.to...
A small team shows a clean end-to-end encryption pattern that keeps your server blind while a mobile app drives a local coding agent.
The post walks through CodeVibe, a mobile companion for AI coding agents like Claude Code, Gemini CLI, and Codex CLI. You approve file edits and send prompts from your phone while the agent runs on your computer, and their backend never sees your prompts, code, or responses in plaintext.
They keep it boring and auditable: AES-256-GCM for content encryption and ECDH P-256 for key exchange. The write-up also clarifies what this protects against and what it doesn’t, which helps teams copy the pattern for agent control planes or any remote approval flow without giving the server access to sensitive data.
Gives a practical blueprint to keep your control plane zero-knowledge while still supporting mobile approvals and prompts.
Uses standard, well-audited crypto (AES-256-GCM, ECDH P-256) that’s easy to reproduce and review.
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terminal
Build a tiny POC: mobile-to-desktop handshake with ECDH P-256 and AES-256-GCM; confirm the server stores only ciphertext and device public keys.
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terminal
Run a MITM/replay exercise against the relay; verify key rotation and device trust break attacks without exposing plaintext.
Legacy codebase integration strategies...
- 01.
Wrap existing agent runners with an E2E layer and a dumb relay; persist device public keys and add rotation/revocation paths.
- 02.
Adjust observability assumptions: move sensitive logging to clients; keep server metrics to metadata only.
Fresh architecture paradigms...
- 01.
Design the server as a ciphertext router from day one; hold secrets and approvals on devices.
- 02.
Prefer short-lived session keys and minimal metadata collection to reduce blast radius and compliance risk.