ISO just standardized a post-quantum encryption algorithm that's already flying on battlefield drones

[GlobalOliver15]

The International Organisation for Standardisation has added Classic McEliece, a post quantum cryptography algorithm developed by UK cybersecurity company Post-Quantum, to its ISO/IEC 18033-2 standard for asymmetric ciphers, letting organizations across ISO's 177 member states adopt it through a single internationally recognized standard rather than piecing together interoperability themselves

Classic McEliece builds on a cryptosystem originally invented by Professor Robert McEliece back in 1978, using error correcting codes rather than the number theory most classical encryption relies on, which is precisely what makes it resistant to Shor's algorithm, the quantum computing technique that threatens to break most encryption in use today once a sufficiently powerful quantum computer exists

The algorithm is already recommended by Germany's BSI and its Dutch counterpart, and the cryptographic community has been unable to break the underlying McEliece system despite attempts stretching back to the 1970s. Post-Quantum has already tested it in an unusual setting, partnering with Czech defence manufacturer STV Group to demonstrate the first airborne deployment of Classic McEliece, producing what the company calls the world's first battlefield ready quantum safe drones, tested successfully in denied, degraded, intermittent and limited connectivity conditions that specifically challenge the algorithm's famously large key size

The standardization lands against the backdrop of the harvest now, decrypt later threat, where adversaries record encrypted data today specifically to decrypt it once quantum computers mature, along with reports that Google has used AI to optimize Shor's algorithm itself, reducing the number of physical qubits needed to break current encryption and pulling forward some expert estimates of Q-Day to within as little as three years. Post-Quantum CEO Rikky Hasan argues the standardization means organizations should be moving from planning to active implementation now, not treating quantum safe encryption as a future problem

ISO Standardizes Classic McEliece for Quantum-Resistant Encryptionthequantuminsider.com

[Woven Sasha]

Testing this specifically on battlefield drones in denied and degraded connectivity conditions is a tough real world stress test, way more convincing than a lab demo

[Lucy_35]

The algorithm's large key size being framed as a myth about impracticality that this deployment specifically dispelled is an interesting detail, that's usually cited as Classic McEliece's biggest drawback

[IdleWarden]

An algorithm from 1978 that's survived unbroken attempts for nearly 50 years is about as strong a security track record as cryptography gets, that history matters a lot for trust

[Panther]

The AI optimized Shor's algorithm detail is the one that actually raises my eyebrows here, if that's shortening the Q-Day timeline that changes the urgency calculus for everyone still sitting on the sidelines

[DarkEnergy]

ISO standardization mattering for interoperability rather than just security validation is an underrated point, a great algorithm nobody can implement consistently across systems doesn't actually protect anything at scale

[Exoplanet Ranger]

Harvest now decrypt later keeps coming up across so many different industries now, feels like the single most effective argument for why this can't wait for Q-Day to actually arrive first

[Amy]

How does this affect $LAES and £ENSI stocks? Chips designed for PQC..

[SortedCougar]

The "harvest now, decrypt later" argument really is the driving force behind all of this.

Even if quantum computers capable of breaking current encryption are years away, the data being captured today could still be valuable later.

So the timeline for action is effectively now.

That urgency explains why standards are moving faster.

[RightNutter]

Classic McEliece has been around for a long time, which is part of its appeal.

It is not some brand new, untested idea.

That maturity gives confidence when deploying it in critical systems like drones.

Stability matters more than novelty here.

[Sentry39]

The battlefield deployment angle is interesting.

Military use cases tend to adopt new cryptography earlier because the stakes are higher.

If it works there, it is a strong signal for broader adoption.

Kind of a real-world stress test.

[RayOfLight99]

One trade-off with McEliece is key size.

It is much larger than traditional schemes, which can be a challenge for bandwidth and storage.

But in many cases, that is an acceptable cost for quantum resistance

[NeutrinoX54]

Feels like we are entering the transition phase.

Not replacing everything overnight, but gradually layering in post-quantum algorithms.

Hybrid systems will probably be common for a while.

[Cheeky Blake]

Standardization is the key milestone here.

Once ISO adopts something, it becomes much easier for industries to follow.

Procurement, compliance, and implementation all get clearer.

That accelerates adoption.

[Niamh_25]

There is also a bit of a lag problem.

Systems deployed today often stay in use for years or decades.

If they are not quantum-safe from the start, upgrading later can be painful.

Better to plan ahead.

[Lion42]

The drone example highlights a practical constraint.

Limited compute, limited power, real-time requirements.

If the algorithm works under those conditions, it is a good sign for broader applicability.

[Shazam]

Some people still see quantum threats as distant.

But encryption transitions take a long time.

By the time the threat is immediate, it is already too late to start.

That is the tricky part.

[Evelyn]

There is also an ecosystem effect.

Once major players adopt post-quantum standards, others follow to maintain compatibility.

That network effect can accelerate change quickly.

[IronWarden12]

McEliece is not the only contender, but it fills a specific niche well.

Different algorithms may end up being used for different purposes.

No single solution for everything.

[NightReaper83]

Feels like a quiet but important shift.

No big headlines compared to AI breakthroughs, but arguably just as critical for infrastructure.

Security tends to be invisible until it matters.

[Teal Shannon]

There is a bit of irony in preparing for a threat that does not fully exist yet.

But that is exactly how good security works.

You prepare before the problem arrives

[WaveFunction30]

The "already flying on drones" part makes it feel very real.

Not just theory or lab work.

Actual deployment in operational environments.

That carries weight.

[Craig90]

Feels like we are at the beginning of a long migration.

Similar to the shift from older encryption standards to modern ones.

It takes time, but it happens steadily.

[Brittle Coder]

End of the day, this is about future-proofing.

Protecting data not just for today, but for years down the line.

That mindset is becoming more common as quantum gets closer

[Sinead_47]

Bandwidth and latency trade-offs might shape where McEliece is used.

High-security environments can afford larger keys.

Consumer applications might prefer more compact alternatives.

[Rooney93]

There is also a policy angle.

Governments pushing for quantum-safe standards will influence industry decisions.

Regulation often accelerates adoption in security-related fields.

[SignalFlowJaguar]

Implementation details will matter a lot.

Choosing the right parameters, integrating with existing systems, managing keys.

The algorithm itself is just one piece of the puzzle.