Post-Quantum Footsteps: SSH, Batteries & Finance 🔐
14 November 2025 was busy in the quantum arena: from infrastructure security upgrades to quantum battery breakthroughs and financial systems bracing for change. Here’s a rundown.
1. GitHub’s Hybrid Post-Quantum SSH Security:
GitHub announced the rollout of a hybrid key-exchange algorithm (sntrup761x25519-sha512) for SSH access.
This is one of the first major moves by a developer platform to counter “store now, decrypt later” threats posed by quantum-capable adversaries.
➡ For organisations: it’s a wake-up call — classical keys are still fine but not forever.
2. Quantum Batteries Get Real:
Researchers (Hong Kong Polytechnic & City Uni) demonstrated a feedback-control scheme for quantum batteries in waveguide-QED systems. Near-perfect charging and work extraction in individual and array setups were shown.
➡ Significance: energy storage for quantum devices (including ours) moves from theory to more concrete territory.
3. Finance & Cryptography Brace for Quantum:
An article published on 14 Nov discusses how quantum computing forces a rethink of existing finance/ledger systems.
It mentions standardisation of post-quantum algorithms like CRYSTALS‑Kyber, CRYSTALS‑Dilithium and SPHINCS+ (FIPS 203/204/205) and how finance systems must adapt.
➡ For PostQuantumApps: this is direct alignment with what we build — the world is signalling “protect now for the quantum future”.
Conclusion:
From securing developer platforms to enabling new energy paradigms and re-engineering financial trust models, quantum tech is weaving into multiple industry layers. Staying ahead means building quantum-resilient systems today.