This server is very restricted compared to dropbear. -passwords are not allowed, only keys -only a single AEAD cipher is supported, and a single elliptic curv

This server is very restricted compared to dropbear. -passwords are not allowed, only keys -only a single AEAD cipher is supported, and a single elliptic curve for key exchange -root cannot be locked out with this server -the key restrictions available in OpenSSH are not supported -the server does not use dynamic memory, and has a better security record than dropbear