Post-quantum cryptography (PQC)

Summary

Cryptographic primitives that are secure against adversaries with quantum capabilities. Not to be confused with quantum cryptography, where the users of the cryptography must have quantum capabilities; in PQC, the protocol itself can still use classical computers, it's just secure against a broader class of adversaries (quantum in addition to classical adversaries).

Code-based cryptography

Hash-based cryptography

Isogeny-based cryptography

Lattice-based cryptography

Cryptography based on lattice hardness assumptions.