bssh2 is a client-side C library implementing the SSH2 protocol

http://www.libssh2.org/

Capabilities and Features

• Key Exchange Methods: diffie-hellman-group1-sha1, diffie-hellman-group14-sha1, diffie-hellman-group-exchange-sha1
• Hostkey Types: ssh-rsa, ssh-dss
• Ciphers: aes256-cbc ([e-mail]), aes192-cbc, aes128-cbc, 3des-cbc, blowfish-cbc, cast128-cbc, arcfour, none
• Compression Schemes: zlib, none
• MAC hashes: hmac-sha1, hmac-sha1-96, hmac-md5, hmac-md5-96, hmac-ripemd160 ([e-mail]), none
• Authentication: none, password, public-key, hostbased, keyboard-interactive
• Channels: shell, exec (incl. SCP wrapper), direct-tcpip, subsystem
• Global Requests: tcpip-forward
• Channel Requests: x11, pty
• Subsystems: sftp(version 3), publickey(version 2)
• Thread-safe: just don't share handles simultaneously
• Non-blocking: it can be used both blocking and non-blocking
• Your sockets: the app hands over the socket, calls select() etc.
• OpenSSL or gcrypt: builds with either

Download

• The latest release: libssh21.3.0 from September 6th 2011 [GPG sig] Changes
• Daily snapshots
• git clone git://git.libssh2.org/libssh2.git browse the git repo
• Older releases

Documentation

• API
• license
• comparison against libssh

• Examples
• FAQ

Support

• mail: The main place to take issues, discuss development or ask about how to use libssh2 is thelibssh2-devel mailing list.
• IRC: irc.freenode.org #libssh2
• Bugs: libssh2 bug tracker