unit1.pas

一个实现DES算法的加密和解密的小程序。

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Button1: TButton;
    Edit3: TEdit;
    Button2: TButton;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  temp:string;
implementation
    uses des;
{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
 temp:=des.EncryptDES(trim(edit1.Text),'a');
 edit2.Text:=temp;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  edit3.Text:=des.DecryptDES(temp,'a');
end;

end.