ffdhe8192

FFDHE8192 is the largest standardized finite field DH group, using 8192-bit parameters and providing approximately 192-bit security. This massive key size is intended for scenarios requiring maximum security against future quantum computers and cryptanalysis. FFDHE8192 is defined in RFC 7919 but has virtually no real-world usage due to extreme performance penalties (200-500x slower than X25519). Handshakes can take seconds instead of milliseconds. FFDHE8192 is rarely implemented outside of academic and research contexts. Its existence provides a theoretical maximum-security option if all other algorithms are broken.