Go

Secure FTP with Client Certificate

See more FTP Examples

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. Go

    success := false

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

    ftp := chilkat.NewFtp2()

    ftp.SetHostname("ftp.example.com")
    ftp.SetPort(21)
    ftp.SetUsername("test")
    ftp.SetPassword("test")

    // This example will use explict TLS/SSL.
    // Establish an explicit secure channel after connection
    // on the standard FTP port 21.
    ftp.SetAuthTls(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.SetSsl(false)

    // Load a certificate from a .pfx
    // A PFX may contain several certs, including the certificates
    // in a chain of authority.
    certStore := chilkat.NewCertStore()
    var password string
    password = "***"
    // Load the certs from a PFX into an in-memory certificate store:
    success = certStore.LoadPfxFile("chilkat.pfx",password)
    if success != true {
        fmt.Println(certStore.LastErrorText())
        ftp.DisposeFtp2()
        certStore.DisposeCertStore()
        return
    }

    // Find the desired certificate.
    jsonCN := chilkat.NewJsonObject()
    jsonCN.UpdateString("CN","cert common name")

    cert := chilkat.NewCert()
    success = certStore.FindCert(jsonCN,cert)
    if success == false {
        fmt.Println("Certificate not found!")
        ftp.DisposeFtp2()
        certStore.DisposeCertStore()
        jsonCN.DisposeJsonObject()
        cert.DisposeCert()
        return
    }

    // 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 {
        fmt.Println(ftp.LastErrorText())
        ftp.DisposeFtp2()
        certStore.DisposeCertStore()
        jsonCN.DisposeJsonObject()
        cert.DisposeCert()
        return
    } else {
        // LastErrorText contains information even when
        // successful. This allows you to visually verify
        // that the secure connection actually occurred.
        fmt.Println(ftp.LastErrorText())
    }

    fmt.Println("Secure FTP Channel Established!")

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

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

    success = ftp.Disconnect()

    ftp.DisposeFtp2()
    certStore.DisposeCertStore()
    jsonCN.DisposeJsonObject()
    cert.DisposeCert()