ottlibs.pas

OttLib套件使用说明： 1、OttEnter控件：该控件主要实现在窗口中按回车键跳转到下一控件的功能；该控件是非可视控件

{
*******************************************************************************
*  本控件由stuwe个人开发,其中部分加密代码来源于网络,如侵犯了您的权益,请联系我 *
*  本控件包包括ottEnter, ottDBGrid, ottEdit, ottDBEdit控件                    *
*  该控件请勿用于商业用途，如需商业使用请与本人联系                           *
*  本人联系方式:  QQ : 31926588                                               *
*                MSN : [e-mail]                                    *
*              EMail : [e-mail]                                          *
*  以下为ottEnter控件代码及部分加密代码和公共代码
*******************************************************************************
}
unit ottlibs;

interface

uses
  SysUtils, Classes, Forms, Messages, Windows, Grids, TypInfo;

type
  MD5Count = array[0..1] of DWORD;
  MD5State = array[0..3] of DWORD;
  MD5Block = array[0..15] of DWORD;
  MD5CBits = array[0..7] of byte;
  MD5Digest = array[0..15] of byte;
  MD5Buffer = array[0..63] of byte;
  MD5Context = record
  State: MD5State;
  Count: MD5Count;
  Buffer: MD5Buffer;
 end;


  TottEnter = class(TComponent)
  private
    { Private declarations }
    FVersion: string;
    FEnable: Boolean;
    FEncrypt: Boolean;
    FOldWindowProc: TWndMethod;
  protected
    { Protected declarations }
    procedure SetEnable(Value: Boolean);
    procedure NewWindowProc(var Msg: TMessage);
  public
    { Public declarations }
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    function EncrypString(str: string; Key: String=''): string;
    function DecrypString(str: string; Key: String=''): string;
    function MD5_String(const str: String): String;
    function MD5_File(const str: String): string;
    function MD5_Match(const str1, str2: string): Boolean;
  published
    property Enable: Boolean read FEnable write SetEnable default false;
    property Encrypt: Boolean read FEncrypt write FEncrypt default true;
    property Version: string read FVersion;
    { Published declarations }
  end;

  procedure MD5Init(var Context: MD5Context);
  procedure MD5Update(var Context: MD5Context; Input: pChar; Length: longword);
  procedure MD5Final(var Context: MD5Context; var Digest: MD5Digest);

  function MD5String(M: string): MD5Digest;
  function MD5File(N: string): MD5Digest;
  function MD5Print(D: MD5Digest): string;

  function MD5Match(D1, D2: MD5Digest): boolean;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('OttLib', [TottEnter]);
end;

{ MyMD5 }

var
 PADDING: MD5Buffer = (
   $80, $00, $00, $00, $00, $00, $00, $00,
   $00, $00, $00, $00, $00, $00, $00, $00,
   $00, $00, $00, $00, $00, $00, $00, $00,
   $00, $00, $00, $00, $00, $00, $00, $00,
   $00, $00, $00, $00, $00, $00, $00, $00,
   $00, $00, $00, $00, $00, $00, $00, $00,
   $00, $00, $00, $00, $00, $00, $00, $00,
   $00, $00, $00, $00, $00, $00, $00, $00
 );

function F(x, y, z: DWORD): DWORD;
begin
 Result := (x and y) or ((not x) and z);
end;

function G(x, y, z: DWORD): DWORD;
begin
 Result := (x and z) or (y and (not z));
end;

function H(x, y, z: DWORD): DWORD;
begin
 Result := x xor y xor z;
end;

function I(x, y, z: DWORD): DWORD;
begin
 Result := y xor (x or (not z));
end;

procedure rot(var x: DWORD; n: BYTE);
begin
 x := (x shl n) or (x shr (32 - n));
end;

procedure FF(var a: DWORD; b, c, d, x: DWORD; s: BYTE; ac: DWORD);
begin
 inc(a, F(b, c, d) + x + ac);
 rot(a, s);
 inc(a, b);
end;

procedure GG(var a: DWORD; b, c, d, x: DWORD; s: BYTE; ac: DWORD);
begin
 inc(a, G(b, c, d) + x + ac);
 rot(a, s);
 inc(a, b);
end;

procedure HH(var a: DWORD; b, c, d, x: DWORD; s: BYTE; ac: DWORD);
begin
 inc(a, H(b, c, d) + x + ac);
 rot(a, s);
 inc(a, b);
end;

procedure II(var a: DWORD; b, c, d, x: DWORD; s: BYTE; ac: DWORD);
begin
 inc(a, I(b, c, d) + x + ac);
 rot(a, s);
 inc(a, b);
end;

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

// Encode Count bytes at Source into (Count / 4) DWORDs at Target
procedure Encode(Source, Target: pointer; Count: longword);
var
 S: PByte;
 T: PDWORD;
 I: longword;
begin
 S := Source;
 T := Target;
 for I := 1 to Count div 4 do begin
   T^ := S^;
   inc(S);
   T^ := T^ or (S^ shl 8);
   inc(S);
   T^ := T^ or (S^ shl 16);
   inc(S);
   T^ := T^ or (S^ shl 24);
   inc(S);
   inc(T);
 end;
end;

// Decode Count DWORDs at Source into (Count * 4) Bytes at Target
procedure Decode(Source, Target: pointer; Count: longword);
var
 S: PDWORD;
 T: PByte;
 I: longword;
begin
 S := Source;
 T := Target;
 for I := 1 to Count do begin
   T^ := S^ and $ff;
   inc(T);
   T^ := (S^ shr 8) and $ff;
   inc(T);
   T^ := (S^ shr 16) and $ff;
   inc(T);
   T^ := (S^ shr 24) and $ff;
   inc(T);
   inc(S);
 end;
end;

// Transform State according to first 64 bytes at Buffer
procedure Transform(Buffer: pointer; var State: MD5State);
var
 a, b, c, d: DWORD;
 Block: MD5Block;
begin
 Encode(Buffer, @Block, 64);
 a := State[0];
 b := State[1];
 c := State[2];
 d := State[3];
 FF (a, b, c, d, Block[ 0],  7, $d76aa478);
 FF (d, a, b, c, Block[ 1], 12, $e8c7b756);
 FF (c, d, a, b, Block[ 2], 17, $242070db);
 FF (b, c, d, a, Block[ 3], 22, $c1bdceee);
 FF (a, b, c, d, Block[ 4],  7, $f57c0faf);
 FF (d, a, b, c, Block[ 5], 12, $4787c62a);
 FF (c, d, a, b, Block[ 6], 17, $a8304613);
 FF (b, c, d, a, Block[ 7], 22, $fd469501);
 FF (a, b, c, d, Block[ 8],  7, $698098d8);
 FF (d, a, b, c, Block[ 9], 12, $8b44f7af);
 FF (c, d, a, b, Block[10], 17, $ffff5bb1);
 FF (b, c, d, a, Block[11], 22, $895cd7be);
 FF (a, b, c, d, Block[12],  7, $6b901122);
 FF (d, a, b, c, Block[13], 12, $fd987193);
 FF (c, d, a, b, Block[14], 17, $a679438e);
 FF (b, c, d, a, Block[15], 22, $49b40821);
 GG (a, b, c, d, Block[ 1],  5, $f61e2562);
 GG (d, a, b, c, Block[ 6],  9, $c040b340);
 GG (c, d, a, b, Block[11], 14, $265e5a51);
 GG (b, c, d, a, Block[ 0], 20, $e9b6c7aa);
 GG (a, b, c, d, Block[ 5],  5, $d62f105d);
 GG (d, a, b, c, Block[10],  9,  $2441453);
 GG (c, d, a, b, Block[15], 14, $d8a1e681);
 GG (b, c, d, a, Block[ 4], 20, $e7d3fbc8);
 GG (a, b, c, d, Block[ 9],  5, $21e1cde6);
 GG (d, a, b, c, Block[14],  9, $c33707d6);
 GG (c, d, a, b, Block[ 3], 14, $f4d50d87);
 GG (b, c, d, a, Block[ 8], 20, $455a14ed);
 GG (a, b, c, d, Block[13],  5, $a9e3e905);
 GG (d, a, b, c, Block[ 2],  9, $fcefa3f8);
 GG (c, d, a, b, Block[ 7], 14, $676f02d9);
 GG (b, c, d, a, Block[12], 20, $8d2a4c8a);
 HH (a, b, c, d, Block[ 5],  4, $fffa3942);
 HH (d, a, b, c, Block[ 8], 11, $8771f681);
 HH (c, d, a, b, Block[11], 16, $6d9d6122);
 HH (b, c, d, a, Block[14], 23, $fde5380c);
 HH (a, b, c, d, Block[ 1],  4, $a4beea44);
 HH (d, a, b, c, Block[ 4], 11, $4bdecfa9);
 HH (c, d, a, b, Block[ 7], 16, $f6bb4b60);
 HH (b, c, d, a, Block[10], 23, $bebfbc70);
 HH (a, b, c, d, Block[13],  4, $289b7ec6);
 HH (d, a, b, c, Block[ 0], 11, $eaa127fa);
 HH (c, d, a, b, Block[ 3], 16, $d4ef3085);
 HH (b, c, d, a, Block[ 6], 23,  $4881d05);
 HH (a, b, c, d, Block[ 9],  4, $d9d4d039);
 HH (d, a, b, c, Block[12], 11, $e6db99e5);
 HH (c, d, a, b, Block[15], 16, $1fa27cf8);
 HH (b, c, d, a, Block[ 2], 23, $c4ac5665);
 II (a, b, c, d, Block[ 0],  6, $f4292244);
 II (d, a, b, c, Block[ 7], 10, $432aff97);
 II (c, d, a, b, Block[14], 15, $ab9423a7);
 II (b, c, d, a, Block[ 5], 21, $fc93a039);
 II (a, b, c, d, Block[12],  6, $655b59c3);
 II (d, a, b, c, Block[ 3], 10, $8f0ccc92);
 II (c, d, a, b, Block[10], 15, $ffeff47d);
 II (b, c, d, a, Block[ 1], 21, $85845dd1);
 II (a, b, c, d, Block[ 8],  6, $6fa87e4f);
 II (d, a, b, c, Block[15], 10, $fe2ce6e0);
 II (c, d, a, b, Block[ 6], 15, $a3014314);
 II (b, c, d, a, Block[13], 21, $4e0811a1);
 II (a, b, c, d, Block[ 4],  6, $f7537e82);
 II (d, a, b, c, Block[11], 10, $bd3af235);
 II (c, d, a, b, Block[ 2], 15, $2ad7d2bb);
 II (b, c, d, a, Block[ 9], 21, $eb86d391);
 inc(State[0], a);
 inc(State[1], b);
 inc(State[2], c);
 inc(State[3], d);
end;

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

// Initialize given Context
procedure MD5Init(var Context: MD5Context);
begin
 with Context do begin
   State[0] := $67452301;
   State[1] := $efcdab89;
   State[2] := $98badcfe;