Visual Basic 6.0

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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Visual Basic 6.0

Dim success As Long
success = 0

'  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.

Dim ssh As New ChilkatSsh

'  Connect to the SSH server.  Port 22 is the usual SSH port.
Dim sshPort As Long
sshPort = 22
success = ssh.Connect("ssh.example.com",sshPort)
If (success = 0) Then
    Debug.Print ssh.LastErrorText
    Exit Sub
End If

'  Begin keyboard-interactive authentication.  The returned XML describes the prompts.
Dim infoRequestXml As String
infoRequestXml = ssh.StartKeyboardAuth("mySshLogin")
If (ssh.LastMethodSuccess = 0) Then
    Debug.Print ssh.LastErrorText
    Exit Sub
End If

Debug.Print infoRequestXml

'  Answer the prompt(s) with ContinueKeyboardAuth.

ssh.Disconnect