Set the Decryption Certificate for MailMan

See more POP3 Examples

Demonstrates the Chilkat MailMan.SetDecryptCert method, which explicitly specifies the certificate to use when decrypting encrypted email. The certificate must correspond to the recipient certificate used to encrypt the message and must have access to its private key. This example loads the certificate from a PFX, registers it, and fetches a message that Chilkat can then decrypt.

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.MailMan,
  Chilkat.Cert,
  Chilkat.Email;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  mailman: TMailMan;
  cert: TCert;
  email: TEmail;

begin
  success := False;

  //  Demonstrates the MailMan.SetDecryptCert method, which explicitly specifies the certificate
  //  to use when decrypting encrypted email.  The certificate must correspond to the recipient
  //  certificate used to encrypt the message, and must have access to its private key.

  mailman := TMailMan.Create;

  //  Configure the POP3 server connection.
  mailman.MailHost := 'pop.example.com';
  mailman.MailPort := 995;
  mailman.PopSsl := True;
  mailman.PopUsername := 'user@example.com';
  mailman.PopPassword := 'myPassword';

  //  Load the certificate together with its private key from a PFX file.
  cert := TCert.Create;
  success := cert.LoadPfxFile('qa_data/certs/decryption.pfx','pfx_password');
  if (success = False) then
    begin
      WriteLn(cert.LastErrorText);
      Exit;
    end;

  //  Specify the certificate to use when decrypting downloaded email.
  success := mailman.SetDecryptCert(cert);
  if (success = False) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  //  Fetch a message; if it is encrypted, Chilkat decrypts it using this certificate.
  email := TEmail.Create;
  success := mailman.FetchOne(False,0,1,email);
  if (success = False) then
    begin
      WriteLn(mailman.LastErrorText);
      Exit;
    end;

  WriteLn('ReceivedEncrypted = ' + email.ReceivedEncrypted);
  WriteLn('Decrypted = ' + email.Decrypted);

  //  Note: The path "qa_data/certs/decryption.pfx" is a relative local filesystem path,
  //  relative to the current working directory of the running application.

  //  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
  //  connects and authenticates -- using the property settings above -- whenever a server
  //  operation requires it.  Calling the explicit connect/authenticate methods can still be
  //  helpful to determine whether a failure occurs while connecting or while authenticating.


  mailman.Free;
  cert.Free;
  email.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.