(Lianja) Send Signed Email using PFX File

Demonstrates how to send a signed email using a digital certificate w/ private key stored in a PFX file.

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

// The mailman object is used for sending and receiving email.
loMailman = createobject("CkMailMan")

// Set the SMTP server.
loMailman.SmtpHost = "smtp.mymailserver.com"

// Create a new email object
loEmail = createobject("CkEmail")

loEmail.Subject = "This email is signed"
loEmail.Body = "This is a digitally signed mail"
loEmail.From = "Chilkat Admin <admin@chilkatsoft.com>"
llSuccess = loEmail.AddTo("Chilkat Support","support@chilkatsoft.com")

// Indicate that the email should be sent signed.
loEmail.SendSigned = .T.

// Tell the mailman to use a PFX file as a source for locating
// the certificate and private key required for signing.
// The certificate chosen for signing will be the one that
// matches the sender's email address, which also has
// a private key.  All intermediate certs in the chain of 
// authentication, up to and including the root, will
// be included in the signature.
llSuccess = loMailman.AddPfxSourceFile("/pfx_files/chilkatsoft_secret.pfx","secret")
if (llSuccess <> .T.) then
    ? loMailman.LastErrorText
    release loMailman
    release loEmail
    return
endif

// Signed email can be sent in two different ways.  
// In a multipart/signed email, the signature is attached as a separate MIME part.
// In an opaque email (signedData) the content of the email is encapsulated within the signature
// and the email is sent as "application/pkcs7-mime". 
// Either should be fine, but some receiving systems might require one or the other..
loMailman.OpaqueSigning = .F.

// Send a signed email.
llSuccess = loMailman.SendEmail(loEmail)
if (llSuccess <> .T.) then
    ? loMailman.LastErrorText
else
    // The LastErrorText property provides information
    // even when successful.
    ? loMailman.LastErrorText
    ? "Mail Sent!"
endif



release loMailman
release loEmail