(Delphi ActiveX) Send Signed and Encrypted EDI Email (EDIFACT)

Demonstrates how to send a signed and encrypted EDI email (EDIFACT email).

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
mailman: TChilkatMailMan;
email: IChilkatEmail;
ediMsg: WideString;
name: WideString;
filename: WideString;
charset: WideString;
success: Integer;
cert: IChilkatCert;

begin
// 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.
mailman := TChilkatMailMan.Create(Self);

//  Create a new email object

//  Build the basic EDI email where the body is the EDIFACT message:
ediMsg := 'UNB+IATB:1+6XPPC ...';
name := 'something';
filename := 'something';
charset := 'iso-8859-1';
email.SetEdifactBody(ediMsg,name,filename,charset);

email.Subject := 'This is the subject';
email.From := 'Chilkat Admin <admin@chilkatsoft.com>';
success := email.AddTo('Chilkat Support','support@chilkatsoft.com');

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

//  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.
success := mailman.AddPfxSourceFile('/pfx_files/myCertAndPrivateKey.pfx','secret');
if (success <> 1) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

//  Load the .cer file into a certificate object.
//  When sending S/MIME encrypted email, it is the recipient's
//  certificate that is used for encryption.  Only the public key
//  is needed to encrypt.  The recipient is the only
//  one possessing the private key, and therefore is the only
//  one able to decrypt.

success := cert.LoadFromFile('/certs/recipientCert.cer');
if (success <> 1) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

//  Indicate that the email is to be sent encrypted.
email.SendEncrypted := 1;

//  Indicate that we want 192-bit 3DES encryption:
email.Pkcs7CryptAlg := '3des';
email.Pkcs7KeyLength := 192;

//  Specify the certificate to be used for encryption.
success := email.SetEncryptCert(cert);

//  Tell the mailman to use an opaque signature (as opposed to a detached signature)
mailman.OpaqueSigning := 1;

//  SMTP server (use your settings and refer to the online
//  reference  documentation for more options)
mailman.SmtpHost := 'smtp.mymailserver.com';
mailman.SmtpUsername := 'myLogin';
mailman.SmtpPassword := 'myPassword';
mailman.SmtpPort := 587;
mailman.StartTLS := 1;

//  Send the signed/encrypted EDI email
success := mailman.SendEmail(email);
if (success <> 1) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
  end
else
  begin
    Memo1.Lines.Add('Mail Sent!');
  end;
end;