did:meme

Sirraya One | Enterprise Decentralized Identity Platform

NIST-certified quantum-resistant identity with zero-knowledge proofs. Government & military-grade verifiable credentials.

A Post-Quantum Future for Let's Encrypt

Let’s Encrypt is committed to a post-quantum-safe Web PKI. The path we’re planning to take is Merkle Tree Certificates (“MTCs”), a new approach that adds post-quantum authentication to the web without sacrificing the speed and reliability that have made TLS universal. This post is about these plans and why we believe MTCs are worth pursuing as a key to a post-quantum future. An increasingly urgent problem For much of the last several years, the conversation about post-quantum cryptography has been a conversation about encryption. The reasoning was straightforward: an attacker who records encrypted traffic today might be able to decrypt it years from now once quantum computers can break the underlying math. Authentication, the part of TLS that indicates a server is who it says it is, has been a less urgent problem. A quantum computer needs to forge a signature in real time, not retroactively, so threats to authentication hinge on the existence of a cryptographically relevant quantum computer (CRQC).

Soatok’s Informal Guide to Threat Models - Dhole Moments

After a long day of exhausting conversations about Hybrid Post-Quantum Cryptography, random jackasses trying to play gotcha with endpoint attacks against end-to-end encrypted messaging apps, and me…

Wave - Secure Messaging App

Privacy-first messaging with quantum-level encryption. No signup, fully decentralized, zero tracking.

mmattbtw/secretsky

A private microblog built on AT Protocol Spaces

Strangeness, illegibility, hardness

An update from our Protocol Fiction special interest group

Robust Steganography from Large Language Models

Recent steganographic schemes, starting with Meteor (CCS'21), rely on leveraging large language models (LLMs) to resolve a historically-challenging task of disguising covert communication as ``innocent-looking'' natural-language communication. However, existing methods are vulnerable to ``re-randomization attacks,'' where slight changes to the communicated text, that might go unnoticed, completely destroy any hidden message. This is also a vulnerability in more traditional encryption-based stegosystems, where adversaries can modify the randomness of an encryption scheme to destroy the hidden message while preserving an acceptable covertext to ordinary users. In this work, we study the problem of robust steganography. We introduce formal definitions of weak and strong robust LLM-based steganography, corresponding to two threat models in which natural language serves as a covertext channel resistant to realistic re-randomization attacks. We then propose two constructions satisfying these notions. We design and implement our steganographic schemes that embed arbitrary secret messages into natural language text generated by LLMs, ensuring recoverability even under adversarial paraphrasing and rewording attacks. To support further research and real-world deployment, we release our implementation and datasets for public use.

A Cryptography Engineer’s Perspective on Quantum Computing Timelines

The risk that cryptographically-relevant quantum computers materialize within the next few years is now high enough to be dispositive, unfortunately.

Babesky Creator Tools for Bluesky

Privacy-first scheduling, analytics, and discovery for NSFW creators on Bluesky. Built by sex workers.

DIDComm: The Future of Secure and Decentralized Communication

How the W3C-Defined DIDComm Protocol is Revolutionizing Digital Messaging

A look at the latest post-quantum signature standardization candidates

NIST has standardized four post-quantum signature schemes so far, and they’re not done yet: there are fourteen new candidates in the running for standardization. In this blog post we take measure of them and discover why we ended up with so many PQ signatures.

Cryptonomicon

Cryptonomicon zooms all over the world, careening consp…

Coding the Digital Occult - Vodun Algorithms

Coding the Digital Occult: The Binary Techno Pagan and Vodun Ontologies of Cyberspace

Information: the Measure of All Things? Part I: Communication, Code and Computation - 3 Quarks Daily

by Yohan J. John