Technical dictionary
mTLS (Mutual TLS)
TLS where both client and server present certificates—strong classical auth that still needs algorithm migration.
Definition
Mutual TLS authenticates both sides of a connection with X.509 certificates. It is common in zero-trust service meshes and API edges.
Quantum risk multiplies with every client certificate still using RSA or ECDSA. Hybrid handshakes and cert agility remain required.