AI solves Signal's toughest crypto puzzle in a month, not years

Google DeepMind's new AI, AlphaProof Code, just pulled off a verification feat that would normally take expert mathematicians years. In just four weeks, it mathematically proved that Signal's core encryption code—the actual software running on phones—correctly implements its security specifications with zero errors, moving far beyond just checking theoretical designs. The AI, built on Google's Gemini Carbon, generated over six million lines of formal proof code and flagged only about 1% for human review, successfully catching two deliberately planted test bugs.

For engineers, this means AI can now rigorously audit critical security infrastructure at unprecedented speed, catching subtle logic flaws humans might miss. For billions of Signal users, it provides mathematically guaranteed confidence that their private messages are actually secure, not just theoretically sound. This breakthrough shifts cryptographic verification from a slow, human-driven art to a scalable, AI-powered engineering discipline.