libssh2 is a library implementing the SSH2 protocol. As defined by
Internet Drafts: SECSH-TRANS, SECSH-USERAUTH, SECSH-CONNECTION, SECSH-ARCH,
SECSH-FILEXFER, SECSH-DHGEX, SECSH-NUMBERS, and SECSH-PUBLICKEY.

Note: this is not related to, nor supersedes libssh http://0xbadc0de.be/