buildroot/package/libssh/Config.in

config BR2_PACKAGE_LIBSSH
        bool "libssh"
        # Either OpenSSL or libgcrypt are mandatory
        select BR2_PACKAGE_LIBGCRYPT if !BR2_PACKAGE_OPENSSL
        help
          libssh is a multiplatform C library implementing the SSHv2
          and SSHv1 protocol on client and server side. With libssh,
          you can remotely execute programs, transfer files, use a
          secure and transparent tunnel for your remote applications.

          http://www.libssh.org/