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Delphi ActiveX

Clear the S/MIME Recipient Certificate List

See more MIME Examples

Demonstrates ClearEncryptCerts, which empties the recipient-certificate list previously populated by AddEncryptCert. This is useful to start over with a different set of recipients before calling EncryptN.

Background. The recipient list is internal state that accumulates across AddEncryptCert calls. ClearEncryptCerts resets it so a subsequent EncryptN encrypts only for the certificates added afterward.

Chilkat Delphi ActiveX Downloads

Delphi ActiveX
var
success: Integer;
mime: TChilkatMime;
cert: TChilkatCert;

begin
success := 0;

mime := TChilkatMime.Create(Self);
success := mime.SetBodyFromPlainText('This message will be encrypted.');
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

//  Add a recipient certificate.
cert := TChilkatCert.Create(Self);
success := cert.LoadFromFile('qa_data/recipient.cer');
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;
success := mime.AddEncryptCert(cert.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

//  ClearEncryptCerts empties the recipient-certificate list, for example to start over with a
//  different set of recipients before calling EncryptN.  It is a void method.
mime.ClearEncryptCerts();

Memo1.Lines.Add('Recipient certificate list cleared.');