(Delphi DLL) Verify a Zip's Password

Demonstrates how to verify the password for an encrypted or password-protected zip archive.

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
zip: HCkZip;
success: Boolean;
passwordOk: Boolean;

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

zip := CkZip_Create();

// To verify a password for a Zip, the Zip must be opened:
success := CkZip_OpenZip(zip,'myProtected.zip');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

// Set the password to be verified:
CkZip_putDecryptPassword(zip,'secret');

passwordOk := CkZip_VerifyPassword(zip);
if (passwordOk = True) then
  begin
    Memo1.Lines.Add('Password is correct.');
  end
else
  begin
    Memo1.Lines.Add('Password is incorrect.');
  end;

CkZip_CloseZip(zip);

CkZip_Dispose(zip);

end;