(Xojo Plugin) SFTP Authentication using X.509 Certificates

See more SFTP Examples

Demonstrates how to authenticate with an SSH/SFTP server using an certificate's private key.

Note: See X.509v3 Certificates for SSH Authentication for more information.

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim sftp As New Chilkat.SFtp

Dim hostname As String
hostname = "sftp.example.com"
Dim port As Int32
port = 22
Dim success As Boolean
success = sftp.Connect(hostname,port)
If (success <> True) Then
    System.DebugLog(sftp.LastErrorText)
    Return
End If

// Load the cert + private key from a .pfx.
// Note: Chilkat provides methods for loading certs and private keys from many sources, including smart cards and USB tokens (HSM's)
Dim cert As New Chilkat.Cert
success = cert.LoadPfxFile("qa_data/pfx/example.pfx","pfx_password")
If (success <> True) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// Get the cert's private key (as PEM) to be used for SSH authentication.
// (The public key is installed on the server.)
Dim privKeyPem As String
privKeyPem = cert.GetPrivateKeyPem()
If (cert.LastMethodSuccess = False) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

Dim key As New Chilkat.SshKey

// Load a private key from a PEM string:
success = key.FromOpenSshPrivateKey(privKeyPem)
If (success <> True) Then
    System.DebugLog(key.LastErrorText)
    Return
End If

// Authenticate with the SSH server.
success = sftp.AuthenticatePk("myLogin",key)
If (success <> True) Then
    System.DebugLog(sftp.LastErrorText)
    Return
End If

System.DebugLog("Public-Key Authentication Successful!")