Tl;dr Curve25519 for 128-bit security, to use with 128/256-bit symmetric cipher. X448 for 224-bit security to use with 256-bit symmetric cipher. - For symme

Tl;dr Curve25519 for 128-bit security, to use with 128/256-bit symmetric cipher. X448 for 224-bit security to use with 256-bit symmetric cipher. - For symmetric ciphers choose any of the three below: -ChaCha20-Poly1305 -Salsa20-Poly1305 -AES-GCM.