Xojo Plugin

Secure FTP with Client Certificate

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Chilkat FTP2 provides the ability to use a client certificate with secure FTP (implicit or explicit SSL/TLS). This example demonstrates how to load a certificate from a .pfx and use it as the client-side SSL cert. Note: Client-side certificates are only needed in situations where the server demands one. Xojo Plugin

Dim success As Boolean
success = False

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

Dim ftp As New Chilkat.Ftp2

ftp.Hostname = "ftp.example.com"
ftp.Port = 21
ftp.Username = "test"
ftp.Password = "test"

// This example will use explict TLS/SSL.
// Establish an explicit secure channel after connection
// on the standard FTP port 21.
ftp.AuthTls = True

// The Ssl property is for establishing an implicit SSL connection
// on port 990.  Because this example uses explicit SSL, it 
// should remain False.
ftp.Ssl = False

// Load a certificate from a .pfx
// A PFX may contain several certs, including the certificates
// in a chain of authority.
Dim certStore As New Chilkat.CertStore
Dim password As String
password = "***"
// Load the certs from a PFX into an in-memory certificate store:
success = certStore.LoadPfxFile("chilkat.pfx",password)
If (success <> True) Then
    System.DebugLog(certStore.LastErrorText)
    Return
End If

// Find the desired certificate.
Dim jsonCN As New Chilkat.JsonObject
success = jsonCN.UpdateString("CN","cert common name")

Dim cert As New Chilkat.Cert
success = certStore.FindCert(jsonCN,cert)
If (success = False) Then
    System.DebugLog("Certificate not found!")
    Return
End If

// Use this certificate for our secure (SSL/TLS) connection:
success = ftp.SetSslClientCert(cert)

// Connect and login to the FTP server.  The connection is 
// made secure because of the AuthTls setting.
success = ftp.Connect()
If (success <> True) Then
    System.DebugLog(ftp.LastErrorText)
    Return
Else
    // LastErrorText contains information even when
    // successful. This allows you to visually verify
    // that the secure connection actually occurred.
    System.DebugLog(ftp.LastErrorText)
End If

System.DebugLog("Secure FTP Channel Established!")

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

// .....
// .....

success = ftp.Disconnect()