(Delphi ActiveX) Create a WinZip/7-Zip compatible AES Encrypted Zip

Creates a WinZip compatible AES-encrypted .zip archive

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
zip: TChilkatZip;
success: Integer;
recurse: Integer;
success: Integer;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

zip := TChilkatZip.Create(Self);

success := zip.NewZip('/myZipDir/aes.zip');
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

// Set properties to indicate that the Zip should be
// AES encrypted.

// A value of 4 indicates WinZip compatible AES encryption.
zip.Encryption := 4;

// Key length can be 128, 192, or 256 bits.
zip.EncryptKeyLength := 128;

// Set the password for AES encryption:
zip.EncryptPassword := 'myPassword';

// Add a directory tree to be zipped.  (The files
// are not compressed at this point -- only references
// to the files and directories are added to the zip object.)
recurse := 1;
success := zip.AppendFiles('c:/temp/a/*',recurse);
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

// Create the encrypted zip ("/myZipDir/aes.zip")
// The path of the zip is what was originally passed
// to the NewZip method (above).  
success := zip.WriteZipAndClose();
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Created AES Encrypted Zip.');
end;