What is PQC?
Ever heard of post-quantum encryption? Also called Post-Quantum Cryptography. PQC for short.
Here's the gist: the word "post-quantum" itself points to the future and its core purpose. These are algorithms built to survive and keep data secure in an era after powerful quantum computers arrive — machines that will break today's encryption standards.
The Three Pillars of Cryptography
In practice, all cryptography relies on three fundamental building blocks:
| Building Block | Quantum Resistance |
|---|---|
| Symmetric encryption | ✅ Double the key length |
| Asymmetric encryption | ❌ Needs complete overhaul |
| Hash functions | ✅ Double the key length |
🔍 Note: When experts say "post-quantum," they're specifically talking about asymmetric, quantum-resistant algorithms. This term has historical roots and reflects their resistance to quantum attacks.
The Asymmetric Problem
While we can upgrade hash functions and symmetric encryption simply by doubling the key length, asymmetric cryptography needs a complete mathematical overhaul.
Why? Because it's based on problems a quantum computer solves easily.
Why Act Now?
⚠️ We need to prepare for the migration to post-quantum algorithms now because data encrypted today could be intercepted and decrypted in the future.
So, implementing post-quantum cryptography into blockchains is critically important. The problem is, it's not a simple fix.
Cellframe's Approach
We'll dive deeper into this next time. For now, we'll just add that our blockchain, Cellframe, was designed from the ground up with future threats in mind.
🛡️ We planned for post-quantum cryptography at the architecture stage itself.
What's Next?
To stay in the loop, subscribe to our channel. We're releasing a whole series on post-quantum algorithms soon.
It's going to be interesting! See you next time 👋
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