Lianja Requires Chilkat v10.1.2+

Send Signed Email using PFX File (long version)

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

llSuccess = .F.

//  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.

//  Load a PFX file into a certificate store object.
//  Then locate the certificate matching the  sender's email address,
//  and use it for signing.
//  (a PFX file may contain more than one certificate.)
loCertStore = createobject("CkCertStore")
//  The 1st argument is the path of the PFX file, the 2nd arg is the 
//  PFX file's password:
llSuccess = loCertStore.LoadPfxFile("/pfx_files/chilkatsoft_secret.pfx","secret")
if (llSuccess <> .T.) then
    ? loCertStore.LastErrorText
    release loMailman
    release loEmail
    release loCertStore
    return
endif

//  Find the certificate for the email address:
loJsonE = createobject("CkJsonObject")
loJsonE.UpdateString("email","admin@chilkatsoft.com")

loCert = createobject("CkCert")
llSuccess = loCertStore.FindCert(loJsonE,loCert)
if (llSuccess = .F.) then
    ? loCertStore.LastErrorText
    release loMailman
    release loEmail
    release loCertStore
    release loJsonE
    release loCert
    return
endif

//  Alternatively, if a PFX file is known to contain a single certificate,
//  you may load it directly into a Chilkat certificate object.
//  This snippet of source code shows how:
loCert2 = createobject("CkCert")
//  The 1st argument is the filename, the 2nd arg is the 
//  PFX file's password:
llSuccess = loCert2.LoadPfxFile("/pfx_files/chilkatsoft_secret.pfx","secret")
if (llSuccess <> .T.) then
    ? loCert2.LastErrorText
    release loMailman
    release loEmail
    release loCertStore
    release loJsonE
    release loCert
    release loCert2
    return
endif

//  This example will use the cert from the certStore...
llSuccess = loEmail.SetSigningCert(loCert)

//  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
release loCertStore
release loJsonE
release loCert
release loCert2