B4X Requires Chilkat v11.0.0+

DKIM Signature using Windows Current User Certificate Store

See more DKIM / DomainKey Examples

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. B4X

Dim success As Boolean = False

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

Dim cert As ChilkatCert
cert.Initialize("cert")

'  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.
success = cert.LoadByCommonName("My Certificate ABC")
If success = False Then
    Log(cert.LastErrorText)
    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(cert.HasPrivateKey) Then
    Log("This certificate does not have a private key available.")
    Return
End If


Dim privKey As ChilkatPrivateKey
privKey.Initialize("privKey")
success = cert.GetPrivateKey(privKey)
If success = False Then
    Log(cert.LastErrorText)
    Return
End If


Dim dkim As ChilkatDkim
dkim.Initialize("dkim")

'  Load the private key into the DKIM object:
success = dkim.SetDkimPrivateKey(privKey)
If success = False Then
    Log(dkim.LastErrorText)
    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...