(PowerBuilder) SFTP use Cert's Private Key for Authentication (Windows)

Demonstrates how to use the private key of a pre-installed certificate (on Windows) for SFTP authentication. The certificate's private key must be marked as "exportable" when originally installed.

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

integer li_rc
oleobject loo_Cert
integer li_Success
oleobject loo_PrivKey
string ls_PrivKeyPem
oleobject loo_SshKey
oleobject loo_Sftp

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

loo_Cert = create oleobject
// Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
li_rc = loo_Cert.ConnectToNewObject("Chilkat.Cert")
if li_rc < 0 then
    destroy loo_Cert
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Load the certificate from the Windows certificate store
li_Success = loo_Cert.LoadByCommonName("my_cert_common_name")
if li_Success = 0 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Cert
    return
end if

// Get the private key.  
loo_PrivKey = loo_Cert.ExportPrivateKey()
if loo_Cert.LastMethodSuccess = 0 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Cert
    return
end if

ls_PrivKeyPem = loo_PrivKey.GetPkcs8Pem()
if loo_PrivKey.LastMethodSuccess = 0 then
    Write-Debug loo_PrivKey.LastErrorText
    destroy loo_Cert
    return
end if

loo_SshKey = create oleobject
// Use "Chilkat_9_5_0.SshKey" for versions of Chilkat < 10.0.0
li_rc = loo_SshKey.ConnectToNewObject("Chilkat.SshKey")

li_Success = loo_SshKey.FromOpenSshPrivateKey(ls_PrivKeyPem)
if li_Success = 0 then
    Write-Debug loo_SshKey.LastErrorText
    destroy loo_Cert
    destroy loo_SshKey
    return
end if

// Connect to an SSH/SFTP server
loo_Sftp = create oleobject
// Use "Chilkat_9_5_0.SFtp" for versions of Chilkat < 10.0.0
li_rc = loo_Sftp.ConnectToNewObject("Chilkat.SFtp")

li_Success = loo_Sftp.Connect("sftp.example.com",22)
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Cert
    destroy loo_SshKey
    destroy loo_Sftp
    return
end if

// Authenticate with the SSH server using a username + private key.
// (The private key serves as the password.  The username identifies
// the SSH user account on the server.)
li_Success = loo_Sftp.AuthenticatePk("mySshLogin",loo_SshKey)
if li_Success = 0 then
    Write-Debug loo_Sftp.LastErrorText
    destroy loo_Cert
    destroy loo_SshKey
    destroy loo_Sftp
    return
end if

Write-Debug "OK, the connection and authentication with the SSH server is completed."

// This example is only to show the connection + authentication using a private key associated with a certificate in the Windows certificate store...


destroy loo_Cert
destroy loo_SshKey
destroy loo_Sftp