(Visual Basic 6.0) FTPS with Client Cert from Windows Certificate Store

Demonstrates how to do mutual TLS authentication using a client certificate installed in the Windows certificate store.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim ftp As New ChilkatFtp2

ftp.Hostname = "ftp.example.com"

' If using implicit TLS, you probably want port 990..
ftp.Port = 990

' Set this to 0 for implicit TLS, otherwise set to 1 for explicit TLS (where port is typically 21).
ftp.AuthTls = 0

' Set this to 1 for implicit TLS, otherwise set to 0.
ftp.Ssl = 1

Dim cert As New ChilkatCert
Dim success As Long
success = cert.LoadByCommonName("The common name of your certificate")
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

' Use this certificate for our TLS mutually authenticated connection:
success = ftp.SetSslClientCert(cert)
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

' Establish the TLS connection with the FTP server.
success = ftp.ConnectOnly()
If (success = 0) Then
    Debug.Print ftp.LastErrorText
    Exit Sub
End If

' If a login is required, then login with the FTP account login/password.
ftp.Username = "myLogin"
ftp.Password = "myPassword"
success = ftp.LoginAfterConnectOnly()
If (success = 0) Then
    Debug.Print ftp.LastErrorText
    Exit Sub
End If

' Do whatever you're doing to do ...
' upload files, download files, etc...

' .....
' .....

success = ftp.Disconnect()