example.pas

这就是著名的DES加密算法的源代码

unit example;

interface

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

type
  TForm2 = class(TForm)
    Panel1: TPanel;
    GroupBox1: TGroupBox;
    GroupBox2: TGroupBox;
    Memo1: TMemo;
    GroupBox3: TGroupBox;
    Memo2: TMemo;
    GroupBox4: TGroupBox;
    Memo3: TMemo;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    GroupBox5: TGroupBox;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation

{$R *.dfm}

procedure TForm2.Button1Click(Sender: TObject);
begin
  Memo2.Text := DES.EncryStrHex(Memo1.Text,edit1.Text );
end;

procedure TForm2.Button2Click(Sender: TObject);
begin
  memo3.Text := DES.DecryStrHex(memo2.Text,edit1.Text);
end;

end.