uSSH SDK by Cypherbridge Systems is a portable ANSI C SSH embedded server and client solution that implements the SSH 2.0 protocol for encrypting network connections between clients and servers. It provides secure interactive shell and SSH tunneled application functions, offering a flexible TCP/IP security layer for applications with a built-in command dispatcher. The SDK includes user authentication, encrypted commands, output, and file transfers to protect against attacks. It supports secure password or public key authentication and encrypted communications, with options for SCP or SFTP secure file transfers. Designed for easy integration with RTOS features, the SDK can be compiled for various processors and platforms, offering configurable cipher suites and an integrated compact math and crypto library.