unit1.pas

XOR算法的DELPHI实现

unit Unit1;
//----------------------------------------------------------------------------
//-------------------------他乡 MSN:[e-mail]---------------------
//----------------------------------------------------------------------------
interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    Button1: TButton;
    Button2: TButton;
    Label4: TLabel;
    Edit4: TEdit;
    Button3: TButton;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
//XOR加密函数
Function EnCrypt(Key,YSData:string):string;
var
  Keydata, Chardata, Stringdata:Byte;
  i:integer;
  JMData:string;
begin
   JMData := '';
   Result := '';
   for i := 1 to Length(YSData) do
     begin
      Keydata := Ord(Key[i]);
      Chardata := Ord(YSData[i]);
      StringData := Keydata Xor Chardata;
      JMData :=  JMData + Chr(StringData);
     end;
   Result := JMData;
end;

//XOR解密函数
Function DeCrypt(Key,JMData:string):string;
var
  Keydata, Chardata, Stringdata:Byte;
  i:integer;
  YSData:string;
begin
   YSData := '';
   Result := '';
   for i := 1 to Length(JMData) do
     begin
      Keydata := Ord(Key[i]);
      Chardata := Ord(JMData[i]);
      StringData := Keydata Xor Chardata;
      YSData :=  YSData + Chr(StringData);
     end;
   Result := YSData;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
    close;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
    Edit3.Text := EnCrypt(Edit1.Text,Edit2.Text);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
     Edit4.Text := DeCrypt(Edit1.Text,Edit3.Text);
end;

end.