libssh 是一个用以访问SSH服务的C语言开发包，通过它可以执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。它对 SFTP 的实现使得远程传输文件变得非常简单，除了OpenSSL所提供的一些加密包(libcrypt、libgcrypt)外，libssh 并不需要更多的第三方包的支持。

-libssh is an SSH service to access C language development kit, which you can execute remote commands, file transfer, while the program provides security for remote transmission channel. Its realization allows remote SFTP file transfer becomes very simple, in addition to provide some of the OpenSSL cryptographic package (libcrypt, libgcrypt) outside, libssh do not need more third-party package support.