The Secret You Encrypt Today Is Already Broken: Post-Quantum Cryptography for Every Developer

Somewhere, a machine is being built that computes by letting possibilities interfere with one another, and in 1994 Peter Shor showed that such a machine could unravel the RSA and elliptic-curve cryptography protecting almost every connection your code makes. That machine does not yet exist at scale. It does not need to. Adversaries are already harvesting encrypted traffic today in order to decrypt it tomorrow, which means that anything your application sends that must stay secret for a decade is, in a meaningful sense, already exposed.

This session takes quantum computing out of the physics lab and puts it into your pull requests. Starting from an intuitive, equation-light tour of why quantum computers break today’s cryptography, it moves to the practical answer: post-quantum cryptography. Attendees will see the NIST standards ML-KEM and ML-DSA, the post-quantum APIs already available in the JDK, hybrid key exchange already running in modern TLS, and the crypto-agility patterns that let systems change algorithms without rewrites. Drawing on the EU Q-FENCE project and a portfolio of quantum computing patents, the session closes with a migration checklist: find your cryptography, rank it by secrecy lifetime, and start moving.