(PowerBuilder) DKIM Signature using Windows Current User Certificate Store

This is a Windows-specific example to load a certificate from the Current User (registry-based) certificate store, and then use the certificate's associated private key for a DKIM signature.

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

integer li_rc
oleobject loo_Cert
integer li_Success
oleobject loo_PrivKey
oleobject loo_Dkim

// This example requires 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

// The LoadByCommonName method searches the Windows Local Machine and Current User 
// registry-based certificate stores for a certificate having the common name specified. 
// If found, the certificate is loaded and ready for use.
li_Success = loo_Cert.LoadByCommonName("My Certificate ABC")
if li_Success <> 1 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Cert
    return
end if

// The certificate must have an associated private key installed, and it must be a
// private key that has been marked "exportable" when it was originally installed.
if not loo_Cert.HasPrivateKey() then
    Write-Debug "This certificate does not have a private key available."
    destroy loo_Cert
    return
end if

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

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

// Load the private key into the DKIM object:
li_Success = loo_Dkim.LoadDkimPk(loo_PrivKey.GetPkcs8Pem(),"")
if li_Success <> 1 then
    Write-Debug loo_Dkim.LastErrorText
    destroy loo_Cert
    destroy loo_Dkim
    return
end if

// The private key has been loaded into the DKIM object.  See the other DKIM
// examples for guidance on how to create a DKIM signature...

destroy loo_PrivKey


destroy loo_Cert
destroy loo_Dkim