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delphi Md5
2008-12-07 20:03:46
//http://hi.baidu.com/coolcat197/blog/item/e98b63d9f746a0e939012ffa.html
//DELPHI MD5加密算法2007-01-23 02:38具体使用方法如下,另外还附有源代码:
{-----------------------------------------------------------
1、 MD5String、MD5File、MD5Print、MD5Match这四个函数是供调用的。
其他是用来辅助这几个函数的子函数。
2、MD5String为加密字符串。
3、MD5File为加密这个文件。
4、MD5Print是将加密后的密文转换成字符串。
5、MD5Match是用来比较密文是否一致。
ExitProcess(0);
Application.Terminate;
加密字符串aaa MD5String('aaa')将加密后的aaa显示出来 MD5Print(MD5String('aaa'))
比较两次密文是否一致: MD5Match(MD5String('第一次明文')
MD5String('第二次输入的明文'))edit2.Text:=MD5Print(MD5String(TempString));
------------------------------------------------------------}
//MD5加密算法(DELPHI)
unit md5;
// -----------------------------------------------------------------------------------------------
interface
// -----------------------------------------------------------------------------------------------uses
Windows;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;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;
// -----------------------------------------------------------------------------------------------
IMPLEMENTATION
// -----------------------------------------------------------------------------------------------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;
State[3] := $10325476;
Count[0] := 0;
Count[1] := 0;
ZeroMemory(@Buffer, SizeOf(MD5Buffer));
end;
end;// Update given Context to include Length bytes of Input
procedure MD5Update(var Context: MD5Context; Input: pChar; Length: longword);
var
Index: longword;
PartLen: longword;
I: longword;
begin
with Context do begin
Index := (Count[0] shr 3) and $3f;
inc(Count[0], Length shl 3);
if Count[0] < (Length shl 3) then inc(Count[1]);
inc(Count[1], Length shr 29);
end;
PartLen := 64 - Index;
if Length >= PartLen then begin
CopyMemory(@Context.Buffer[Index], Input, PartLen);
Transform(@Context.Buffer, Context.State);
I := PartLen;
while I + 63 < Length do begin
Transform(@Input[I], Context.State);
inc(I, 64);
end;
Index := 0;
end else I := 0;
CopyMemory(@Context.Buffer[Index], @Input[I], Length - I);
end;// Finalize given Context, create Digest and zeroize Context
procedure MD5Final(var Context: MD5Context; var Digest: MD5Digest);
var
Bits: MD5CBits;
Index: longword;
PadLen: longword;
begin
Decode(@Context.Count, @Bits, 2);
Index := (Context.Count[0] shr 3) and $3f;
if Index < 56 then PadLen := 56 - Index else PadLen := 120 - Index;
MD5Update(Context, @PADDING, PadLen);
MD5Update(Context, @Bits, 8);
Decode(@Context.State, @Digest, 4);
ZeroMemory(@Context, SizeOf(MD5Context));
end;// -----------------------------------------------------------------------------------------------
// Create digest of given Message
function MD5String(M: string): MD5Digest;
var
Context: MD5Context;
begin
MD5Init(Context);
MD5Update(Context, pChar(M), length(M));
MD5Final(Context, Result);
end;// Create digest of file with given Name
function MD5File(N: string): MD5Digest;
var
FileHandle: THandle;
MapHandle: THandle;
ViewPointer: pointer;
Context: MD5Context;
begin
MD5Init(Context);
FileHandle := CreateFile(pChar(N), GENERIC_READ, FILE_SHARE_READ or FILE_SHARE_WRITE,
nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL or FILE_FLAG_SEQUENTIAL_SCAN, 0);
if FileHandle <> INVALID_HANDLE_value then try
MapHandle := CreateFileMapping(FileHandle, nil, PAGE_READONLY, 0, 0, nil);
if MapHandle <> 0 then try
ViewPointer := MapViewOfFile(MapHandle, FILE_MAP_READ, 0, 0, 0);
if ViewPointer <> nil then try
MD5Update(Context, ViewPointer, GetFileSize(FileHandle, nil));
finally
UnmapViewOfFile(ViewPointer);
end;
finally
CloseHandle(MapHandle);
end;
finally
CloseHandle(FileHandle);
end;
MD5Final(Context, Result);
end;// Create hex representation of given Digest
function MD5Print(D: MD5Digest): string;
var
I: byte;
const
Digits: array[0..15] of char =
('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');
begin
Result := '';
for I := 0 to 15 do Result := Result + Digits[(D[I] shr 4) and $0f] + Digits[D[I] and $0f];
end;// -----------------------------------------------------------------------------------------------
// Compare two Digests
function MD5Match(D1, D2: MD5Digest): boolean;
var
I: byte;
begin
I := 0;
Result := TRUE;
while Result and (I < 16) do begin
Result := D1[I] = D2[I];
inc(I);
end;
end;end.
-
Delphi XM
2008-12-07 19:46:07
{
MiniFMOD 1.7 is a free C library from Fairlight
Technologies (http://www.fmod.org) which allows
you to play .XM files. Compiled into a .OBJ,
it is then possible to use it in any language
that supports OMF .OBJ files.Here is the Delphi header I made for it.
Twis (June 2004).
}unit MiniFMOD;
interface
uses
Windows;type
TMemoryFile = record
Length: Cardinal;
Position: Cardinal;
Data: Pointer;
end;
PMemoryFile = ^TMemoryFile;
PMUSICMODULE = Pointer;const
// this is for the callbacks
SEEK_SET = 0;
SEEK_CUR = 1;
SEEK_END = 2;var
Module: PMUSICMODULE = nil;
_ResName, _ResType: PChar;
__turboFloat: Integer;// functions from MiniFMOD
procedure _FSOUND_File_SetCallbacks(OpenCallback, CloseCallback, ReadCallback, SeekCallback, TellCallback: Pointer); cdecl;
function _FMUSIC_LoadSong(Name: PChar; SampleLoadCallback: Pointer): PMUSICMODULE; cdecl;
function _FMUSIC_FreeSong(Module: PMUSICMODULE): ByteBool; cdecl;
function _FMUSIC_PlaySong(Module: PMUSICMODULE): ByteBool; cdecl;
function _FMUSIC_StopSong(Module: PMUSICMODULE): ByteBool; cdecl;
function _FMUSIC_GetOrder(Module: PMUSICMODULE): Integer; cdecl;
function _FMUSIC_GetRow(Module: PMUSICMODULE): Integer; cdecl;
function _FMUSIC_GetTime(Module: PMUSICMODULE): Cardinal; cdecl;// functions I added
procedure XMPlayFromRes(ResName, ResType: PChar);
procedure XMFree();
implementation{$L MiniFMOD.obj}
{
C functions which are not included in the .OBJ, so
we need to reprogram them here.
}function _memcpy(Destination: Pointer; Source: Pointer; Count: Cardinal): Pointer; cdecl;
begin
CopyMemory(Destination, Source, Count);
Result := Destination;
end;function _memset(Destination: Pointer; C: Integer; Count: Cardinal): Pointer; cdecl;
begin
FillMemory(Destination, Count, C);
Result := Destination;
end;function _calloc(Number: Cardinal; Size: Cardinal): Pointer; cdecl;
begin
GetMem(Result, Number * Size);
ZeroMemory(Result, Number * Size);
end;procedure _free(Block: Pointer); cdecl;
begin
FreeMem(Block);
end;procedure __ftol;
asm
push eax
fistp dword ptr [esp]
fwait
pop eax
end;procedure _fabs;
asm
fld qword ptr [esp + 4]
fabs
fwait
end;procedure _sin;
asm
fld qword ptr [esp + 4]
fsin
fwait
end;procedure _abs;
asm
mov eax, dword ptr [esp + 4]
test eax, $80000000
jz @Exit
neg eax
@Exit:
end;procedure _pow;
asm
fld qword ptr [esp + 12]
fld qword ptr [esp + 4]
fyl2x
fld ST(0)
frndint
fsub ST(1), ST
fxch ST(1)
f2xm1
fld1
fadd
fscale
fstp ST(1)
fwait
end;{
here comes the callback functions when playing from a resource
}function MemFile_OpenCallback(Name: PChar): PMemoryFile; cdecl;
var
ResParam: HRSRC;
ResHandle: HGLOBAL;
begin
New(Result);
ResParam := FindResource(hInstance, Name, _ResType);
ResHandle := LoadResource(hInstance, ResParam);
Result.Length := SizeOfResource(hInstance, ResParam);
Result.Data := LockResource(ResHandle);
Result.Position := 0;
end;procedure MemFile_CloseCallback(MemFile: PMemoryFile); cdecl;
begin
Dispose(MemFile);
end;function MemFile_ReadCallback(Buffer: Pointer; Size: Cardinal; MemFile: PMemoryFile): Integer; cdecl;
begin
if MemFile.Position + Size >= MemFile.Length then
Size := MemFile.Length - MemFile.Position;
CopyMemory(Buffer, Pointer(Cardinal(MemFile.Data) + MemFile.Position), Size);
MemFile.Position := MemFile.Position + Size;
Result := Size;
end;procedure MemFile_SeekCallback(MemFile: PMemoryFile; Position: Integer; Mode: Byte); cdecl;
begin
case Mode of
SEEK_SET: MemFile.Position := Position;
SEEK_CUR: MemFile.Position := Integer(MemFile.Position) + Position;
SEEK_END: MemFile.Position := Integer(MemFile.Length) + Position;
end;
if MemFile.Position > MemFile.Length then
MemFile.Position := MemFile.Length;
end;function MemFile_TellCallback(MemFile: PMemoryFile): Integer; cdecl;
begin
Result := MemFile.Position;
end;{
some imports (waveout API)
}function waveOutOpen: DWORD; stdcall; external 'winmm.dll';
function waveOutClose: DWORD; stdcall; external 'winmm.dll';
function waveOutPrepareHeader: DWORD; stdcall; external 'winmm.dll';
function waveOutUnprepareHeader: DWORD; stdcall; external 'winmm.dll';
function waveOutWrite: DWORD; stdcall; external 'winmm.dll';
function waveOutReset: DWORD; stdcall; external 'winmm.dll';
function waveOutGetPosition: DWORD; stdcall; external 'winmm.dll';{
functions from MiniFMOD
}procedure _FSOUND_File_SetCallbacks; external;
function _FMUSIC_LoadSong; external;
function _FMUSIC_FreeSong; external;
function _FMUSIC_PlaySong; external;
function _FMUSIC_StopSong; external;
function _FMUSIC_GetOrder; external;
function _FMUSIC_GetRow; external;
function _FMUSIC_GetTime; external;{
here we go with the functions we will use
from outside this unit
}procedure XMPlayFromRes(ResName, ResType: PChar);
begin
if Module <> nil then Exit;
_ResName := ResName;
_ResType := ResType;
_FSOUND_File_SetCallbacks(@MemFile_OpenCallback, @MemFile_CloseCallback,
@MemFile_ReadCallback, @MemFile_SeekCallback, @MemFile_TellCallback);
Module := _FMUSIC_LoadSong(ResName, nil);
_FMUSIC_PlaySong(Module);
end;procedure XMFree();
begin
_FMUSIC_FreeSong(Module);
Module := nil;
end;end.