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How iPhone's Secure Enclave Stops Brute-Force Attacks
TL;DR: Your iPhone protects your 6-digit passcode by combining hardware-bound cryptography with forced validation delays. The Secure Enclave enforce…
pqc-bench Part 2: Where the X25519MLKEM768 overhead actually matters
Part 1 ran a fresh-handshake load test on a Graviton3 and measured what the ML-KEM half of X25519MLKEM768 adds to TLS 1.3 handshake latency. The hea…
Post-Quantum Cryptography Migration- A Practical Starting Point for Developers
Most production stacks are running RSA and ECC in a dozen places the developer didn't consciously choose — a cloud provider default, an npm package,…
NSA Accelerates Post-Quantum Cryptography Implementation: Addressing National Security and Tech Industry Concerns
Introduction The National Security Agency (NSA) has announced a dramatic acceleration of its post-quantum cryptography (PQC) implementation timeline…
Cryptotremor: finding out when your encryption actually stops working
Every security team has the same question this October and almost nobody has the answer: when does the encryption in front of us actually stop worki…
Key rotation as a scheduled operation
Key rotation as a scheduled operation Rotation appears in every policy document and fails in most implementations for the same reason: the key exist…
Cloudflare plans to issue quantum-safe TLS certificates
The move will be part of a major overhaul of the ecosystem for website authentication.
Building a Sovereign Cryptography Suite in .NET: 11 Engines, Multi-Jurisdictional Hashes, and Anti-Keylogger Shields
1. 🚀 Introduction & Background In modern software engineering, data security is often treated as a solved problem through a mono-cultural lens.…
Eliminate replay attacks: Payload hashing & TTL validation in Fabric.
Eliminate replay attacks: Payload hashing & TTL validation in Fabric. Day 06 of the wFabricSecurity Open-Source Engineering Series. In financial…
Rotate without breaking: Automated key rotation with rotate_key().
Key rotation shouldn't mean taking your services offline for a database migration. With wauth's rotate_key(), every secret in your vault is re-encry…
Tamper-proof distributed nodes: SHA-256 source code integrity verification.
Day 03 of the wFabricSecurity Open-Source Engineering Series. How do you know the worker submitting transactions to your blockchain hasn't been modi…
Don't trust the randomness API: verify drand beacons in your agent in 30 lines
Agents keep needing a random number that another party can check: picking a reviewer, breaking a tie, sampling a test case, running a small raffle.…
Forging 1024-bit RSA signatures in nearly SNFS time
Alternate title: Nearly SNFS-Speed Signature Forgery Sans Factoring N (NSNFSSSFSFN) Abstract. The security of RSA is generally understood to be base…
Using SHA256 to Build Trustworthy Data Portals in Brazil
Data portals in emerging markets face a specific credibility problem: how do you prove that the data you display was not silently altered after publ…
Encryption Isn't Enough — You Also Need to Know If Someone Tampered With Your Data
Most people think encryption's job is to keep data secret. That's only half the job — and the half it doesn't cover is exactly where a lot of otherw…
Caesar Cipher Explained: How It Works, Encryption, Decryption, and Examples
If you've ever been curious about how encryption works at a basic level, the Caesar Cipher is a great place to start. It is one of the simplest clas…
PicoCTF Easy1 Writeup — Recover an XOR Key with Crib Dragging
The flag is XOR-encrypted with a short repeating key. Since we know every picoCTF flag starts with picoCTF{ , we XOR that known text ("crib") with t…
The gpg.fail aftermath: On responsible disclosure, GPG, and the state of security in 2026 [32:37]
In 2025, I [the speaker] found and disclosed a bunch of vulnerabilities in GPG, the most used PGP implementation, and held a talk at 39c3 about it.…
PicoCTF Substitution0 Writeup — Break a Substitution Cipher with Frequency Analysis
Unlike Caesar, each letter is replaced by a different letter according to an arbitrary mapping (not a simple shift). We solve it by comparing the le…
Everything is a Trust Decision
A machine checked proof of the exhaustive boundaries of trust. I'll let the text carry the rest. Comments
PicoCTF Mod 26 Writeup — Brute-Force a Caesar Cipher
The Caesar cipher has exactly 26 possible shifts (modulo the 26 letters of the alphabet). A Python script that tests all 26 shifts and looks for pic…