delphi2010和Delphi7下的MD5算出来的结果不一样怎么办？(50)

用的是下面的，但是delphi2010下跟d7下算出来的不一样。想让2010的跟d7的一样该怎么解决呢？unit md5;INTERFACEuses 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 Targetprocedure 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 Targetprocedure 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 Bufferprocedure 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 Contextprocedure 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 Inputprocedure 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, Context.State); inc(I, 64); end; Index := 0; end else I := 0; CopyMemory(@Context.Buffer[Index], @Input, Length - I);end;// Finalize given Context, create Digest and zeroize Contextprocedure 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 Messagefunction 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 Namefunction 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 Digestfunction 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 shr 4) and $0f] + Digits[D and $0f];end;// -----------------------------------------------------------------------------------------------// Compare two Digestsfunction MD5Match(D1, D2: MD5Digest): boolean;var I: byte;begin I := 0; Result := TRUE; while Result and (I < 16) do begin Result := D1 = D2; inc(I); end;end;end.

需要说一下，只有上面这个单元在D7算出来的数才是我需要的，怎么修改成2010下的版本呢？我想应该是char、String的问题吧，但是要怎么改呢？

pChar改成pAnsiCharChar改成AnsiCharString改成AnsiString试了把这些改掉也不行！跪求修改办法！[]

借宝地用一下.谁有delphi2010的demos呢?到下面这个地址去回答,有分http://www.delphibbs.com/delphibbs/dispq.asp?lid=3986366

D7://uses IdHashMessageDigest,IdHash;procedure TForm1.btn1Click(Sender: TObject);var MyMD5: TIdHashMessageDigest5; Digest: T4x4LongWordRecord;//T4x4LongWordRecord;begin MyMD5 := TIdHashMessageDigest5.Create; try Digest := MyMD5.HashValue(edt1.Text); Caption := MyMD5.AsHex(Digest); //显示32个字符长度的MD5签名结果 finally FreeAndNil(MyMD5); end;end;procedure TForm1.btn2Click(Sender: TObject);var MyMD5: TIdHashMessageDigest5; Digest: T4x4LongWordRecord; FS:TFileStream;begin if dlgOpen1.Execute then begin MyMD5 := TIdHashMessageDigest5.Create; FS:=TFileStream.Create(dlgOpen1.FileName,fmOpenRead); try Digest := MyMD5.HashValue(FS); Caption := MyMD5.AsHex(Digest); //显示32个字符长度的MD5签名结果 finally FreeAndNil(MyMD5); FreeAndNil(FS); end; end;end;D2010://uses IdHashMessageDigest;procedure TForm1.btn1Click(Sender: TObject);var MyMD5:TIdHashMessageDigest5;begin MyMD5:=TIdHashMessageDigest5.Create; try Caption:=MyMD5.HashStringAsHex(edt1.Text,TEncoding.Default); finally FreeAndNil(MyMD5); end;end;procedure TForm1.btn2Click(Sender: TObject);var MyMD5:TIdHashMessageDigest5; FS:TFileStream;begin if dlgOpen1.Execute then begin MyMD5:=TIdHashMessageDigest5.Create; FS:=TFileStream.Create(dlgOpen1.FileName,fmOpenRead); try Caption:=MyMD5.HashStreamAsHex(FS); finally FreeAndNil(MyMD5); FreeAndNil(FS); end; end;end;

我也有一问题，我的帐户不能确认，无法发新贴，怎么办？

不用indy的是有原因的，淘宝API的MD5算法只有上面代码算出来才是一样的，我也木有办法呀。代码改成了这样，大家帮忙看看，为啥字符串很长的时候算出来的还是不一样呢，原因出在哪？下面的md5.pas是改过的，替换了String为AnsiString，算个短字符串到是D2010和D7一样，很长的一个串D2010就又不一样了。procedure TForm1.FormCreate(Sender: TObject);var s: AnsiString;begin s := '123'; ShowMessage(MD5Print(MD5AnsiString(s)));end;unit md5;INTERFACEuses Windows;typeMD5Count = 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 MD5AnsiString(M: AnsiString): MD5Digest;function MD5File(N: AnsiString): MD5Digest;function MD5Print(D: MD5Digest): AnsiString;function MD5Match(D1, D2: MD5Digest): boolean;IMPLEMENTATIONvarPADDING: 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;beginResult := (x and y) or ((not x) and z);end;function G(x, y, z: DWORD): DWORD;beginResult := (x and z) or (y and (not z));end;function H(x, y, z: DWORD): DWORD;beginResult := x xor y xor z;end;function I(x, y, z: DWORD): DWORD;beginResult := y xor (x or (not z));end;procedure rot(var x: DWORD; n: BYTE);beginx := (x shl n) or (x shr (32 - n));end;procedure FF(var a: DWORD; b, c, d, x: DWORD; s: BYTE; ac: DWORD);begininc(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);begininc(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);begininc(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);begininc(a, I(b, c, d) + x + ac);rot(a, s);inc(a, b);end;// Encode Count bytes at Source into (Count / 4) DWORDs at Targetprocedure Encode(Source, Target: pointer; Count: longword);varS: PByte;T: PDWORD;I: longword;beginS := 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 Targetprocedure Decode(Source, Target: pointer; Count: longword);varS: PDWORD;T: PByte;I: longword;beginS := 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 Bufferprocedure Transform(Buffer: pointer; var State: MD5State);vara, b, c, d: DWORD;Block: MD5Block;beginEncode(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 Contextprocedure MD5Init(var Context: MD5Context);beginwith 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 Inputprocedure MD5Update(var Context: MD5Context; Input: pChar; Length: longword);varIndex: longword;PartLen: longword;I: longword;beginwith 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, Context.State); inc(I, 64); end; Index := 0;end else I := 0;CopyMemory(@Context.Buffer[Index], @Input, Length - I);end;// Finalize given Context, create Digest and zeroize Contextprocedure MD5Final(var Context: MD5Context; var Digest: MD5Digest);varBits: MD5CBits;Index: longword;PadLen: longword;beginDecode(@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 Messagefunction MD5AnsiString(M: AnsiString): MD5Digest;varContext: MD5Context;beginMD5Init(Context);MD5Update(Context, pChar(M), length(M));MD5Final(Context, Result);end;// Create digest of file with given Namefunction MD5File(N: AnsiString): MD5Digest;varFileHandle: THandle;MapHandle: THandle;ViewPointer: pointer;Context: MD5Context;beginMD5Init(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 Digestfunction MD5Print(D: MD5Digest): AnsiString;varI: byte;constDigits: array[0..15] of char = ('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');beginResult := '';for I := 0 to 15 do Result := Result + Digits[(D shr 4) and $0f] + Digits[D and $0f];end;// Compare two Digestsfunction MD5Match(D1, D2: MD5Digest): boolean;varI: byte;beginI := 0;Result := TRUE;while Result and (I < 16) do begin Result := D1 = D2; inc(I);end;end;end.

例如这个这样个字符串，D2010下算出来的就是不对的：fwgwgregr97908gregr+45346:3435fwgwgregr97908gregr+45346:3435+fwgwgregr97908gregr+