CBC Bit Flipping Explained: Why Encryption Alone Doesn't Guarantee Integrity
Most developers learn a hard lesson at some point in their careers: just because data is encrypted doesn't mean it’s safe from tampering. It’s an easy…
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UVS: a draw's fairness as a fact you can recompute — not a certificate you trust
I've built casino slot machines and gaming systems for 15 years. I mostly stayed away from compliance, but once I had to write the official algorithm …
rscrypto v0.4.0: Verifying Constant-Time Behavior Instead of Assuming It
Every cryptography library says it's secure and performant. Very few can explain how that security is validated and how that performance is proven aft…
Post-quantum cryptography for embedded and IoT: secure boot, TLS and OTA
Post-quantum cryptography is no longer just a research topic. It is starting to affect the way embedded teams design TLS, secure boot, OTA, firmware s…
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…
Why Strict "Zero Trust" Breaks Secret Management (And How We Built a Zero-Persistence Vault Instead)
This is a technical deep dive into the cryptography behind Ennote's enterprise architecture. You can read the original full-length post on our enginee…
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…