PowerBuilder

Set a TLS Client Certificate for IMAP

Demonstrates the Chilkat Imap.SetSslClientCert method, which supplies a client certificate for TLS client-certificate authentication. The only argument is a Cert object that must provide access to its private key. Call it before connecting. This example loads the certificate from a PFX file.

Note: The certificate path is relative to the application's current working directory. Supply the path to your own certificate file.

Background: Most IMAP servers authenticate with a username and password only. A few high-security deployments additionally require mutual TLS, where the client presents its own certificate during the handshake. Because that happens as part of connecting, the certificate must be set before Connect — setting it afterward has no effect on the already-established connection.

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integer li_rc
integer li_Success
oleobject loo_Imap
string ls_PfxPassword
oleobject loo_Cert

li_Success = 0

//  Demonstrates the Imap.SetSslClientCert method, which supplies a client certificate for TLS
//  client-certificate authentication.  The only argument is a Cert object.  It must be called
//  before connecting.

loo_Imap = create oleobject
li_rc = loo_Imap.ConnectToNewObject("Chilkat.Imap")
if li_rc < 0 then
    destroy loo_Imap
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Imap.Ssl = 1
loo_Imap.Port = 993

//  The PFX password is not hard-coded in source.  Insert code here to obtain it from an
//  interactive prompt, environment variable, or a secrets vault.

//  Load the client certificate (and its private key) from a PFX file.
loo_Cert = create oleobject
li_rc = loo_Cert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_Cert.LoadPfxFile("qa_data/client.pfx",ls_PfxPassword)
if li_Success = 0 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Imap
    destroy loo_Cert
    return
end if

//  Provide the client certificate BEFORE connecting.
li_Success = loo_Imap.SetSslClientCert(loo_Cert)
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_Cert
    return
end if

li_Success = loo_Imap.Connect("imap.example.com")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_Cert
    return
end if

li_Success = loo_Imap.Login("user@example.com","myPassword")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_Cert
    return
end if

li_Success = loo_Imap.Disconnect()
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_Cert
    return
end if



destroy loo_Imap
destroy loo_Cert