I fell into a rabbit hole of post-quantum cryptography and ended up writing a fairly deep guide. It covers stuff like Kyber, Dilithium, liboqs, PQClean, and hybrid key exchange with OpenSSL.

I tried to keep it practical includes working code examples, trade-offs, and where the standards are headed including the finalized NIST picks. Also added some notes on real-world use cases.

If anyone here is working on something similar or already rolling out PQC in production, would love to hear what libraries or strategies you're using.