SSH Public Key Authentication

Demonstrates how to authenticate with an SSH server using public key authentication.

Download Chilkat 32-bit SSH / SFTP ActiveX (.msi)

Download All 32-bit Chilkat ActiveX Components (.zip)

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Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

'  Important: It is helpful to send the contents of the
'  sftp.LastErrorText property when sending email
'  to support@chilkatsoft.com

set ssh = CreateObject("Chilkat.Ssh")

'  Any string automatically begins a fully-functional 30-day trial.
success = ssh.UnlockComponent("Anything for 30-day trial")
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

'  Set some timeouts, in milliseconds:
ssh.ConnectTimeoutMs = 5000
ssh.IdleTimeoutMs = 15000

'  Connect to the SSH server.
'  The standard SSH port = 22
'  The hostname may be a hostname or IP address.

hostname = "www.my-ssh-server.com"
port = 22
success = ssh.Connect(hostname,port)
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

set key = CreateObject("Chilkat.SshKey")

'  Load a private key from a PEM file:
'  (Private keys may be loaded from OpenSSH and Putty formats.
'  Both encrypted and unencrypted private key file formats
'  are supported.  This example loads an unencrypted private
'  key in OpenSSH format.  PuTTY keys typically use the .ppk
'  file extension, while OpenSSH keys use the PEM format.
privKey = key.LoadText("myPrivateKey.pem")
If (privKey = vbNullString ) Then
    outFile.WriteLine(key.LastErrorText)
    WScript.Quit
End If

'  (For PuTTY keys, call FromPuttyPrivateKey instead.)
success = key.FromOpenSshPrivateKey(privKey)
If (success <> 1) Then
    outFile.WriteLine(key.LastErrorText)
    WScript.Quit
End If

'  Authenticate with the SSH server using the login and
'  private key.  (The corresponding public key should've
'  been installed on the SSH server beforehand.)
success = ssh.AuthenticatePk("myLogin",key)
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

MsgBox ssh.LastErrorText
MsgBox "Public-Key Authentication Successful!"
outFile.Close