Technical dictionary
AES-256
Symmetric block cipher; against Grover, 256-bit keys are the usual long-term recommendation.
Definition
AES is a symmetric algorithm, not broken by Shor’s factoring/discrete-log approach. Grover’s algorithm can speed brute force, which is why AES-256 is preferred for long-term strength.
Symmetric crypto still depends on how keys are established—often via classical public-key TLS that does need PQC/hybrid upgrades.