OpenSSH introduces curve25519-sha256@libssh.org key exchange ! 1

A while back, I introduced a new key exchange mechanism, “curve25519-sha256@libssh.org” in our code base. The reasons were explained together with the specifications. In a nutshell, this key exchange function is based on DJB’s Curve25519 elliptic curve Diffie-Hellman key exchange. This algorithm does not rely on NIST-based curves and gives us more security confidence against a possible backdoor in nistp-256 […]

tmate

libssh 0.6.0rc1 3

We are proud to announce the release of the first release candidate of libssh 0.6.0. We have rewritten a lot of code to provide a better API and added a lot of features. The most important changes are the new public key API, Kerberos support, ECDSA and ECDH support and the new callback based server support. If you are new […]


libssh 0.5.5 3

This is another bugfix release of libssh version 0.5. If you are new to libssh read The Tutorial how to get started. Please join our mailing list or visit our irc channel if you have questions. You can download libssh 0.5.5 here. For Windows binaries we suggest to use the MSVC or MinGW binaries from the KDE Windows project here. […]


libssh 0.5.4 (SECURITY RELEASE) 4

This is an important SECURITY and maintenance release in order to address CVE-2013-0176 – NULL dereference leads to denial of service. The crash could kill a SSH server using libssh. However it depends on the the server process model how bad the situation can be. If you use a forked model to implement your server, the user will just kill […]