The First Step to Quantum-Proofing Digital Security

Thitipun Srinarmwong — Mon, 10 Mar 2025 15:28:16 +0000

🔒 RSA is Strong... Until It’s Not 🔓

Let’s be real RSA-2048 encryption is everywhere. Your bank transactions, crypto wallets, VPNs, software licenses, all rely on it. It’s been the backbone of digital security for decades.

But here’s something wild to think about:

If you wanted to brute force just one RSA-2048 key, you’d have to try ~2²⁰⁴⁸ (that’s 617 digits worth of combinations). Even if every atom in the universe was a supercomputer, we wouldn’t finish before the heat death of the universe.

…Unless you have a Quantum Computer.

🚀 Open-Source License Signing API

I built this open-source API that lets you sign & verify software license keys using RSA-2048 encryption.

✅ Generate RSA key pairs

✅ Sign software license keys

✅ Verify signed licenses

✅ Live API (No setup needed!)

🔗 Try it Now (Live API)

🌍 API Base URL:

https://license-signing-api.onrender.com

📜 Swagger UI Docs:

https://license-signing-api.onrender.com/api-docs

💻 GitHub Repository:

https://github.com/tsrinarmwong/license-key-generator

🛑 The Quantum Threat

Right now, RSA-2048 is secure—but quantum computers will break it.

Shor’s Algorithm will allow quantum machines to factor RSA’s large primes exponentially faster than today’s supercomputers.
That means banking encryption, crypto wallets, and software licenses could be cracked once we hit large-enough quantum machines.

Big players (Google, NSA, NIST) are already moving to Post-Quantum Cryptography (PQC).

So why not get ahead of it?

🔮 What’s Next?

I’m working on adding PQC (Post-Quantum Cryptography) support to this open-source API so it stays secure in a post-RSA world.

🚀 Want to contribute? Let’s build this together.

Would love your feedback, ideas, or PRs! 🙌