Pascal (Lazarus/Delphi)

Create a WinZip/7-Zip compatible AES Encrypted Zip

See more Zip Examples

Creates a WinZip compatible AES-encrypted .zip archive Pascal (Lazarus/Delphi)

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.Zip;

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

procedure RunDemo;
var
  success: Boolean;
  zip: TZip;
  recurse: Boolean;

begin
  success := False;

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

  zip := TZip.Create;

  success := zip.NewZip('/myZipDir/aes.zip');
  if (success <> True) then
    begin
      WriteLn(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 := True;
  success := zip.AppendFiles('c:/temp/a/*',recurse);
  if (success <> True) then
    begin
      WriteLn(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 <> True) then
    begin
      WriteLn(zip.LastErrorText);
      Exit;
    end;

  WriteLn('Created AES Encrypted Zip.');


  zip.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.