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Cleanup

This commit is contained in:
mysticbbs 2013-09-13 22:52:00 -04:00
parent 5ff385bf74
commit 82cd604c2f
1 changed files with 186 additions and 154 deletions
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190
mdl/m_crypt.pas
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@ -4,8 +4,10 @@ Unit m_Crypt;
Interface Interface
// merge in m_Crc, rewrite googled and shitty hextobyte function // m_CRC should be merged into this
Function B64Encode (S: String) : String;
Function B64Decode (S: String) : String;
Function HMAC_MD5 (Text, Key: String) : String; Function HMAC_MD5 (Text, Key: String) : String;
Function MD5 (Const Value: String) : String; Function MD5 (Const Value: String) : String;
Function Digest2String (Digest: String) : String; Function Digest2String (Digest: String) : String;
@ -28,41 +30,70 @@ Type
BufLong : array[0..15] of Integer; BufLong : array[0..15] of Integer;
End; End;
// rewrite the terribad functions now that this stuff is working Const
B64Codes = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
function HexToByte (Hex: String) : byte; Function B64Encode (S: String) : String;
var Var
n, n2, sayi: Integer; I : Integer;
A : Integer;
X : Integer;
B : Integer;
Begin Begin
n := 0; Result := '';
n2 := 0; A := 0;
B := 0;
Case Hex[1] Of For I := 1 to Length(S) Do Begin
'A','a': n:= 10; X := Byte(S[I]);
'B','b': n:= 11; B := B * 256 + X;
'C','c': n:= 12; A := A + 8;
'D','d': n:= 13;
'E','e': n:= 14; While A >= 6 Do Begin
'F','f': n:= 15; A := A - 6;
X := B DIV (1 SHL a);
B := B MOD (1 SHL a);
Result := Result + B64Codes[X + 1];
End;
End; End;
If Hex[1] in ['0','1','2','3','4','5','6','7','8','9'] Then If A > 0 Then Begin
n := strS2I(Hex[1]); X := B SHL (6 - A);
Result := Result + B64Codes[X + 1];
Case Hex[2] Of If A = 4 Then Result := Result + '=';
'A','a': n2:= 10; If A = 2 Then Result := Result + '==';
'B','b': n2:= 11; End;
'C','c': n2:= 12;
'D','d': n2:= 13;
'E','e': n2:= 14;
'F','f': n2:= 15;
End; End;
If Hex[2] in ['0','1','2','3','4','5','6','7','8','9'] Then Function B64Decode (S: String) : String;
n2 := strS2I(Hex[2]); Var
I : Integer;
A : Integer;
X : Integer;
B : Integer;
Begin
Result := '';
A := 0;
B := 0;
sayi := n * 16 + n2; For I := 1 to Length(S) Do Begin
Result := sayi; X := Pos(s[I], B64Codes) - 1;
If X >= 0 Then Begin
B := B * 64 + X;
A := A + 6;
If A >= 8 Then Begin
A := A - 8;
X := B SHR A;
B := B MOD (1 SHL A);
X := X MOD 256;
Result := Result + Chr(X);
End;
End Else
Exit;
End;
End; End;
Function Digest2String (Digest: String) : String; Function Digest2String (Digest: String) : String;
@ -85,7 +116,7 @@ Begin
Count := 1; Count := 1;
While Count < Length(Str) Do Begin While Count < Length(Str) Do Begin
Result := Result + Char(HexToByte(Copy(Str, Count, 2))); Result := Result + Char(strH2I(Copy(Str, Count, 2)));
Inc (Count, 2); Inc (Count, 2);
End; End;
End; End;
@ -136,12 +167,12 @@ Begin
Inc(Count[0], InputLen shl 3); Inc(Count[0], InputLen shl 3);
if Count[0] < (InputLen shl 3) then If Count[0] < (InputLen shl 3) then
Inc(Count[1]); Inc(Count[1]);
Inc(Count[1], InputLen shr 29); Inc(Count[1], InputLen shr 29);
partLen := 64 - Index; PartLen := 64 - Index;
if InputLen >= partLen then begin if InputLen >= partLen then begin
ArrLongToByte(BufLong, BufAnsiChar); ArrLongToByte(BufLong, BufAnsiChar);
@ -163,47 +194,48 @@ Begin
end; end;
Index := 0; Index := 0;
end else End Else
I := 0; I := 0;
ArrLongToByte(BufLong, BufAnsiChar); ArrLongToByte(BufLong, BufAnsiChar);
Move(Data[I+1], BufAnsiChar[Index], InputLen-I); Move(Data[I+1], BufAnsiChar[Index], InputLen-I);
ArrByteToLong(BufAnsiChar, BufLong); ArrByteToLong(BufAnsiChar, BufLong);
end End
end; End;
procedure MD5Transform(var Buf: array of LongInt; const Data: array of LongInt); Procedure MD5Transform (Var Buf: Array of LongInt; const Data: Array of LongInt);
var Var
A, B, C, D: LongInt; A, B, C, D: LongInt;
procedure Round1(var W: LongInt; X, Y, Z, Data: LongInt; S: Byte); Procedure Round1 (Var W: LongInt; X, Y, Z, Data: LongInt; S: Byte);
begin Begin
Inc(W, (Z xor (X and (Y xor Z))) + Data); Inc(W, (Z xor (X and (Y xor Z))) + Data);
W := (W shl S) or (W shr (32 - S)); W := (W shl S) or (W shr (32 - S));
Inc(W, X); Inc(W, X);
end; End;
procedure Round2(var W: LongInt; X, Y, Z, Data: LongInt; S: Byte); Procedure Round2 (Var W: LongInt; X, Y, Z, Data: LongInt; S: Byte);
begin Begin
Inc(W, (Y xor (Z and (X xor Y))) + Data); Inc(W, (Y xor (Z and (X xor Y))) + Data);
W := (W shl S) or (W shr (32 - S)); W := (W shl S) or (W shr (32 - S));
Inc(W, X); Inc(W, X);
end; End;
procedure Round3(var W: LongInt; X, Y, Z, Data: LongInt; S: Byte); Procedure Round3 (Var W: LongInt; X, Y, Z, Data: LongInt; S: Byte);
begin Begin
Inc(W, (X xor Y xor Z) + Data); Inc(W, (X xor Y xor Z) + Data);
W := (W shl S) or (W shr (32 - S)); W := (W shl S) or (W shr (32 - S));
Inc(W, X); Inc(W, X);
end; End;
procedure Round4(var W: LongInt; X, Y, Z, Data: LongInt; S: Byte); Procedure Round4 (Var W: LongInt; X, Y, Z, Data: LongInt; S: Byte);
begin Begin
Inc(W, (Y xor (X or not Z)) + Data); Inc(W, (Y xor (X or not Z)) + Data);
W := (W shl S) or (W shr (32 - S)); W := (W shl S) or (W shr (32 - S));
Inc(W, X); Inc(W, X);
end; End;
begin
Begin
A := Buf[0]; A := Buf[0];
B := Buf[1]; B := Buf[1];
C := Buf[2]; C := Buf[2];
@ -281,20 +313,20 @@ begin
Inc (Buf[1], B); Inc (Buf[1], B);
Inc (Buf[2], C); Inc (Buf[2], C);
Inc (Buf[3], D); Inc (Buf[3], D);
end; End;
function MDFinal(var MDContext: TMDCtx; transform: TMDTransform): string; Function MDFinal (Var MDContext: TMDCtx; Transform: TMDTransform) : String;
var Var
Cnt : Word; Cnt : Word;
P : Byte; P : Byte;
digest: array[0..15] of Byte; Digest : Array[0..15] of Byte;
i: Integer; I : Integer;
n: integer; N : Integer;
begin Begin
for I := 0 to 15 do For I := 0 to 15 Do
Digest[I] := I + 1; Digest[I] := I + 1;
with MDContext do begin With MDContext Do Begin
Cnt := (Count[0] shr 3) and $3F; Cnt := (Count[0] shr 3) and $3F;
P := Cnt; P := Cnt;
BufAnsiChar[P] := $80; BufAnsiChar[P] := $80;
@ -309,16 +341,16 @@ begin
Transform(State, BufLong); Transform(State, BufLong);
ArrLongToByte(BufLong, BufAnsiChar); ArrLongToByte(BufLong, BufAnsiChar);
for n := 0 to 55 do For N := 0 to 55 Do
BufAnsiChar[n] := 0; BufAnsiChar[N] := 0;
ArrByteToLong(BufAnsiChar, BufLong); ArrByteToLong(BufAnsiChar, BufLong);
end else begin End Else Begin
for n := 0 to Cnt - 8 - 1 do For N := 0 to Cnt - 8 - 1 Do
BufAnsiChar[p + n] := 0; BufAnsiChar[p + n] := 0;
ArrByteToLong(BufAnsiChar, BufLong); ArrByteToLong(BufAnsiChar, BufLong);
end; End;
BufLong[14] := Count[0]; BufLong[14] := Count[0];
BufLong[15] := Count[1]; BufLong[15] := Count[1];
@ -328,49 +360,49 @@ begin
Result := ''; Result := '';
for i := 0 to 15 do For I := 0 to 15 Do
Result := Result + char(digest[i]); Result := Result + Char(Digest[I]);
end; End;
end; End;
function MD5(const Value: string): string; Function MD5 (Const Value: String): String;
var Var
MDContext: TMDCtx; MDContext: TMDCtx;
begin Begin
MDInit (MDContext); MDInit (MDContext);
MDUpdate (MDContext, Value, @MD5Transform); MDUpdate (MDContext, Value, @MD5Transform);
Result := MDFinal(MDContext, @MD5Transform); Result := MDFinal(MDContext, @MD5Transform);
end; End;
function HMAC_MD5(Text, Key: string): string; Function HMAC_MD5(Text, Key: string): string;
var Var
ipad, opad, s: string; ipad, opad, s: string;
n: Integer; n: Integer;
MDContext: TMDCtx; MDContext: TMDCtx;
begin Begin
if Length(Key) > 64 then If Length(Key) > 64 then
Key := md5(Key); Key := md5(Key);
ipad := StringOfChar(#$36, 64); ipad := StringOfChar(#$36, 64);
opad := StringOfChar(#$5C, 64); opad := StringOfChar(#$5C, 64);
for n := 1 to Length(Key) do begin For n := 1 to Length(Key) do begin
ipad[n] := char(Byte(ipad[n]) xor Byte(Key[n])); ipad[n] := char(Byte(ipad[n]) xor Byte(Key[n]));
opad[n] := char(Byte(opad[n]) xor Byte(Key[n])); opad[n] := char(Byte(opad[n]) xor Byte(Key[n]));
end; End;
MDInit(MDContext); MDInit(MDContext);
MDUpdate(MDContext, ipad, @MD5Transform); MDUpdate(MDContext, ipad, @MD5Transform);
MDUpdate(MDContext, Text, @MD5Transform); MDUpdate(MDContext, Text, @MD5Transform);
s := MDFinal(MDContext, @MD5Transform); S := MDFinal(MDContext, @MD5Transform);
MDInit(MDContext); MDInit(MDContext);
MDUpdate(MDContext, opad, @MD5Transform); MDUpdate(MDContext, opad, @MD5Transform);
MDUpdate(MDContext, s, @MD5Transform); MDUpdate(MDContext, s, @MD5Transform);
Result := MDFinal(MDContext, @MD5Transform); Result := MDFinal(MDContext, @MD5Transform);
end; End;
end. End.