Xbase++ 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. Xbase++

LOCAL nSuccess
LOCAL oMailman
LOCAL oEmail
LOCAL oCertStore
LOCAL oJsonE
LOCAL oCert
LOCAL oCert2

nSuccess := 0

//  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.
oMailman := CreateObject("Chilkat.MailMan")

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

//  Create a new email object
oEmail := CreateObject("Chilkat.Email")

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

//  Indicate that the email should be sent signed.
oEmail:SendSigned := 1

//  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.)
oCertStore := CreateObject("Chilkat.CertStore")
//  The 1st argument is the path of the PFX file, the 2nd arg is the 
//  PFX file's password:
nSuccess := oCertStore:LoadPfxFile("/pfx_files/chilkatsoft_secret.pfx", "secret")
IF (nSuccess != 1)
    ? oCertStore:LastErrorText
    oMailman:destroy()
    oEmail:destroy()
    oCertStore:destroy()
    RETURN
ENDIF

//  Find the certificate for the email address:
oJsonE := CreateObject("Chilkat.JsonObject")
oJsonE:UpdateString("email", "admin@chilkatsoft.com")

oCert := CreateObject("Chilkat.Cert")
nSuccess := oCertStore:FindCert(oJsonE, oCert)
IF (nSuccess == 0)
    ? oCertStore:LastErrorText
    oMailman:destroy()
    oEmail:destroy()
    oCertStore:destroy()
    oJsonE:destroy()
    oCert:destroy()
    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:
oCert2 := CreateObject("Chilkat.Cert")
//  The 1st argument is the filename, the 2nd arg is the 
//  PFX file's password:
nSuccess := oCert2:LoadPfxFile("/pfx_files/chilkatsoft_secret.pfx", "secret")
IF (nSuccess != 1)
    ? oCert2:LastErrorText
    oMailman:destroy()
    oEmail:destroy()
    oCertStore:destroy()
    oJsonE:destroy()
    oCert:destroy()
    oCert2:destroy()
    RETURN
ENDIF

//  This example will use the cert from the certStore...
nSuccess := oEmail:SetSigningCert(oCert)

//  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..
oMailman:OpaqueSigning := 0

//  Send a signed email.
nSuccess := oMailman:SendEmail(oEmail)
IF (nSuccess != 1)
    ? oMailman:LastErrorText
ELSE
    //  The LastErrorText property provides information
    //  even when successful.
    ? oMailman:LastErrorText
    ? "Mail Sent!"
ENDIF

oMailman:destroy()
oEmail:destroy()
oCertStore:destroy()
oJsonE:destroy()
oCert:destroy()
oCert2:destroy()