dropbear-bin binary package in Ubuntu Oracular amd64

 dropbear is a SSH 2 server and client designed to be small enough to
 be used in small memory environments, while still being functional and
 secure enough for general use.
 .
 It implements most required features of the SSH 2 protocol, and other
 features such as authentication agent forwarding.
 .
 This package provides dropbear(8), dbclient(1), dropbearkey(1) and
 dropbearconvert(1).

Source package