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Start SSH Keyboard-Interactive Authentication

Demonstrates the Chilkat Ssh.StartKeyboardAuth method, which begins keyboard-interactive authentication. The only argument is the login name. It returns XML describing the server's prompts and whether each response should be echoed. Answer the prompts with ContinueKeyboardAuth.

Background: Keyboard-interactive is the flexible, prompt-driven SSH method — the server sends one or more questions (a password, a one-time code, a security question) and the client answers each. It is how SSH supports two-factor and other challenge-response schemes. The returned XML tells you exactly what to ask the user and whether to mask their input.

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llSuccess = .F.

//  Demonstrates the Ssh.StartKeyboardAuth method, which begins keyboard-interactive
//  authentication.  The only argument is the login name.  It returns XML describing the server's
//  prompts and whether each response should be echoed.

loSsh = createobject("CkSsh")

//  Connect to the SSH server.  Port 22 is the usual SSH port.
lnSshPort = 22
llSuccess = loSsh.Connect("ssh.example.com",lnSshPort)
if (llSuccess = .F.) then
    ? loSsh.LastErrorText
    release loSsh
    return
endif

//  Begin keyboard-interactive authentication.  The returned XML describes the prompts.
lcInfoRequestXml = loSsh.StartKeyboardAuth("mySshLogin")
if (loSsh.LastMethodSuccess = .F.) then
    ? loSsh.LastErrorText
    release loSsh
    return
endif

? lcInfoRequestXml

//  Answer the prompt(s) with ContinueKeyboardAuth.

loSsh.Disconnect()


release loSsh