Cloud KMS and Bring-Your-Own-Key: What You're Actually Trusting
Every major cloud provider sells a key management service, and most sell a "bring your own key" option layered on top, marketed as the difference betw…
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How I built an E2EE chat in Go + React (with AI agent support)
🚀 Try it now: Open the Arthas web app — create a room, share the code, chat with E2EE. No signup needed. TL;DR — Try It in 2 Minutes No signup require…
laravel-crypto: libsodium, no compromises, and per-user encryption
Laravel's default cipher is AES-256-CBC . That is a 25-year-old design with no built-in authentication — the MAC is bolted on separately by the framew…
OPAQUE: Password Authentication That Never Sends the Password
The standard way to log in — type a password, send it to the server, hope the server hashes it well — has a structural flaw nobody has been able to fi…
EU Chat Control: What Client-Side Scanning Actually Means for Encryption
The EU's proposed Chat Control regulation would require messaging providers to scan your messages for illegal content before encryption, on your devic…
Matrix: The Open Protocol for Federated Encrypted Messaging
Signal works well when everyone involved trusts the same company. Matrix is built for the case where they don't — where organizations want to run thei…
Building an Experimental TypeScript Cipher Inspired by 8 Dimensions
Over the last few days, I started an experimental study on cryptography with the goal of better understanding concepts such as symmetric encryption , …
How Group Encrypted Messaging Actually Works
Adding a third person to an encrypted conversation seems like it should be simple. It isn't. The cryptographic properties that make 1:1 messaging secu…