diff options
author | Alexey Kulakov <panda75@bk.ru> | 2012-07-04 13:17:29 +0000 |
---|---|---|
committer | Alexey Kulakov <panda75@bk.ru> | 2012-07-04 13:17:29 +0000 |
commit | a5a3db4393d85407ff4c5668d88860e06158abd0 (patch) | |
tree | bcc8f716833034e33984a539ab7d1debfdd6a7d3 /plugins/HistoryPlusPlus/Checksum.pas | |
parent | 88ec2ae53ddc811d08763b2fb3a0073b571a321c (diff) |
History++ sources upload (all files, no project)
git-svn-id: http://svn.miranda-ng.org/main/trunk@756 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
Diffstat (limited to 'plugins/HistoryPlusPlus/Checksum.pas')
-rw-r--r-- | plugins/HistoryPlusPlus/Checksum.pas | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/plugins/HistoryPlusPlus/Checksum.pas b/plugins/HistoryPlusPlus/Checksum.pas new file mode 100644 index 0000000000..dab601641a --- /dev/null +++ b/plugins/HistoryPlusPlus/Checksum.pas @@ -0,0 +1,363 @@ +{-----------------------------------------------------------------------------
+ Checksum (History++ project)
+
+ Version: 1.0
+ Created: 29.03.2003
+
+ [ Description ]
+
+
+
+ [ History ]
+
+
+-----------------------------------------------------------------------------}
+
+
+{Copyright: Hagen Reddmann mailto:HaReddmann@AOL.COM
+ Author: Hagen Reddmann
+ Remarks: freeware, but this Copyright must be included
+ known Problems: none
+ Version: 3.0, Delphi Encryption Compendium
+ Delphi 2-4, BCB 3-4, designed and testet under D3 and D4
+ Description: Utilitys for the DEC Packages
+
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+}
+unit Checksum;
+
+interface
+
+uses SysUtils, Windows, Base64;
+
+type
+ TDig64 = array[0..1] of DWord;
+
+function DigToBase(Digest: TDig64): AnsiString;
+function BaseToDig(Str: AnsiString): TDig64;
+//function StrToDig(Str: AnsiString): TDig64;
+function DigToStr(Digest: TDig64): AnsiString;
+function SameDigest(Dig1,Dig2: TDig64): Boolean;
+procedure CalcCRC32(Data: Pointer; DataSize: DWord; var CRCValue: DWord);
+//function CRC32(CRC: DWord; Data: Pointer; DataSize: DWord): LongWord; assembler;
+//function CRC32a(CRC: DWord; Data: Pointer; DataSize: DWord): DWord;
+function HashString(Str: AnsiString): TDig64;
+procedure CalcSampleHash(const Data: Pointer; DataSize: Integer; var Digest: TDig64);
+
+var
+ ZeroDig: TDig64 = (0,0);
+
+implementation
+
+const
+ DIGEST_DIV = '-';
+const
+ InitDigest: TDig64 = ($F3C55C5C,$05000000);
+ InitCRC: DWord = $F3C55C5C;
+
+function DigToBase(Digest: TDig64): AnsiString;
+var
+ DigStr: AnsiString;
+begin
+ SetLength(DigStr, SizeOf(Digest));
+ Move(Digest, DigStr[1], SizeOf(Digest));
+ Result := Base64EncodeStr(DigStr);
+end;
+
+function BaseToDig(Str: AnsiString): TDig64;
+var
+ DigStr: AnsiString;
+begin
+ DigStr := Base64DecodeStr(Str);
+ Move(DigStr[1], Result, SizeOf(Result));
+end;
+
+function HashString(Str: AnsiString): TDig64;
+begin
+ Result := ZeroDig;
+ Result[0] := InitCRC;
+ CalcCRC32(@Str[1], Length(Str), Result[0]);
+ // CalcSampleHash(@Str[1],Length(Str),Result);
+end;
+(*
+function StrToDig(Str: AnsiString): TDig64;
+var
+ Dig1, Dig2: AnsiString;
+ n: Integer;
+begin
+ Result[0] := 0;
+ Result[1] := 0;
+ n := Pos(DIGEST_DIV, Str);
+ if n = 0 then
+ exit;
+
+ Dig1 := Copy(Str, 1, n - 1);
+ Dig2 := Copy(Str, n + 1, Length(Str));
+
+ Result[0] := StrToInt('$' + Dig1);
+ Result[1] := StrToInt('$' + Dig2);
+end;
+*)
+function DigToStr(Digest: TDig64): AnsiString;
+begin
+ Result := AnsiString(IntToHex(Digest[0], 8)) + DIGEST_DIV + AnsiString(IntToHex(Digest[1], 8));
+end;
+
+function SameDigest(Dig1, Dig2: TDig64): Boolean;
+begin
+ Result := (Dig1[0] = Dig2[0]) and (Dig1[1] = Dig2[1]);
+end;
+
+{
+ function CRC32a(CRC: DWord; Data: Pointer; DataSize: DWord): DWord;
+ begin
+ Result := CRC32(CRC,Data,DataSize);
+ end;
+}
+type
+ PInteger = ^Integer;
+
+procedure CalcSampleHash(const Data: Pointer; DataSize: Integer; var Digest: TDig64);
+var
+ B: ^DWord;
+ T: DWord;
+begin
+ Digest := InitDigest;
+ B := Data;
+ while DataSize >= SizeOf(DWord) do
+ begin
+ T := Digest[0];
+ Inc(Digest[0], B^);
+ if Digest[0] < T then
+ Inc(Digest[1]);
+ Inc(B);
+ Dec(DataSize, SizeOf(DWord));
+ end;
+ if DataSize > 0 then
+ begin
+ T := 0;
+ Move(B^, T, DataSize);
+ Inc(Digest[0], T);
+ end;
+end;
+
+const
+ CRC32Table: array[0..255] of DWord =
+ ($00000000, $77073096, $EE0E612C, $990951BA,
+ $076DC419, $706AF48F, $E963A535, $9E6495A3,
+ $0EDB8832, $79DCB8A4, $E0D5E91E, $97D2D988,
+ $09B64C2B, $7EB17CBD, $E7B82D07, $90BF1D91,
+ $1DB71064, $6AB020F2, $F3B97148, $84BE41DE,
+ $1ADAD47D, $6DDDE4EB, $F4D4B551, $83D385C7,
+ $136C9856, $646BA8C0, $FD62F97A, $8A65C9EC,
+ $14015C4F, $63066CD9, $FA0F3D63, $8D080DF5,
+ $3B6E20C8, $4C69105E, $D56041E4, $A2677172,
+ $3C03E4D1, $4B04D447, $D20D85FD, $A50AB56B,
+ $35B5A8FA, $42B2986C, $DBBBC9D6, $ACBCF940,
+ $32D86CE3, $45DF5C75, $DCD60DCF, $ABD13D59,
+ $26D930AC, $51DE003A, $C8D75180, $BFD06116,
+ $21B4F4B5, $56B3C423, $CFBA9599, $B8BDA50F,
+ $2802B89E, $5F058808, $C60CD9B2, $B10BE924,
+ $2F6F7C87, $58684C11, $C1611DAB, $B6662D3D,
+
+ $76DC4190, $01DB7106, $98D220BC, $EFD5102A,
+ $71B18589, $06B6B51F, $9FBFE4A5, $E8B8D433,
+ $7807C9A2, $0F00F934, $9609A88E, $E10E9818,
+ $7F6A0DBB, $086D3D2D, $91646C97, $E6635C01,
+ $6B6B51F4, $1C6C6162, $856530D8, $F262004E,
+ $6C0695ED, $1B01A57B, $8208F4C1, $F50FC457,
+ $65B0D9C6, $12B7E950, $8BBEB8EA, $FCB9887C,
+ $62DD1DDF, $15DA2D49, $8CD37CF3, $FBD44C65,
+ $4DB26158, $3AB551CE, $A3BC0074, $D4BB30E2,
+ $4ADFA541, $3DD895D7, $A4D1C46D, $D3D6F4FB,
+ $4369E96A, $346ED9FC, $AD678846, $DA60B8D0,
+ $44042D73, $33031DE5, $AA0A4C5F, $DD0D7CC9,
+ $5005713C, $270241AA, $BE0B1010, $C90C2086,
+ $5768B525, $206F85B3, $B966D409, $CE61E49F,
+ $5EDEF90E, $29D9C998, $B0D09822, $C7D7A8B4,
+ $59B33D17, $2EB40D81, $B7BD5C3B, $C0BA6CAD,
+
+ $EDB88320, $9ABFB3B6, $03B6E20C, $74B1D29A,
+ $EAD54739, $9DD277AF, $04DB2615, $73DC1683,
+ $E3630B12, $94643B84, $0D6D6A3E, $7A6A5AA8,
+ $E40ECF0B, $9309FF9D, $0A00AE27, $7D079EB1,
+ $F00F9344, $8708A3D2, $1E01F268, $6906C2FE,
+ $F762575D, $806567CB, $196C3671, $6E6B06E7,
+ $FED41B76, $89D32BE0, $10DA7A5A, $67DD4ACC,
+ $F9B9DF6F, $8EBEEFF9, $17B7BE43, $60B08ED5,
+ $D6D6A3E8, $A1D1937E, $38D8C2C4, $4FDFF252,
+ $D1BB67F1, $A6BC5767, $3FB506DD, $48B2364B,
+ $D80D2BDA, $AF0A1B4C, $36034AF6, $41047A60,
+ $DF60EFC3, $A867DF55, $316E8EEF, $4669BE79,
+ $CB61B38C, $BC66831A, $256FD2A0, $5268E236,
+ $CC0C7795, $BB0B4703, $220216B9, $5505262F,
+ $C5BA3BBE, $B2BD0B28, $2BB45A92, $5CB36A04,
+ $C2D7FFA7, $B5D0CF31, $2CD99E8B, $5BDEAE1D,
+
+ $9B64C2B0, $EC63F226, $756AA39C, $026D930A,
+ $9C0906A9, $EB0E363F, $72076785, $05005713,
+ $95BF4A82, $E2B87A14, $7BB12BAE, $0CB61B38,
+ $92D28E9B, $E5D5BE0D, $7CDCEFB7, $0BDBDF21,
+ $86D3D2D4, $F1D4E242, $68DDB3F8, $1FDA836E,
+ $81BE16CD, $F6B9265B, $6FB077E1, $18B74777,
+ $88085AE6, $FF0F6A70, $66063BCA, $11010B5C,
+ $8F659EFF, $F862AE69, $616BFFD3, $166CCF45,
+ $A00AE278, $D70DD2EE, $4E048354, $3903B3C2,
+ $A7672661, $D06016F7, $4969474D, $3E6E77DB,
+ $AED16A4A, $D9D65ADC, $40DF0B66, $37D83BF0,
+ $A9BCAE53, $DEBB9EC5, $47B2CF7F, $30B5FFE9,
+ $BDBDF21C, $CABAC28A, $53B39330, $24B4A3A6,
+ $BAD03605, $CDD70693, $54DE5729, $23D967BF,
+ $B3667A2E, $C4614AB8, $5D681B02, $2A6F2B94,
+ $B40BBE37, $C30C8EA1, $5A05DF1B, $2D02EF8D);
+(*
+function CRC32(CRC: LongWord; Data: Pointer; DataSize: LongWord): LongWord; assembler;
+asm
+ AND EDX,EDX
+ JZ @Exit
+ AND ECX,ECX
+ JLE @Exit
+ PUSH EBX
+ PUSH EDI
+ XOR EBX,EBX
+ LEA EDI,CS:[OFFSET @CRC32]
+@Start: MOV BL,AL
+ SHR EAX,8
+ XOR BL,[EDX]
+ XOR EAX,[EDI + EBX * 4]
+ INC EDX
+ DEC ECX
+ JNZ @Start
+ POP EDI
+ POP EBX
+@Exit: RET
+ DB 0, 0, 0, 0, 0 // Align Table
+@CRC32: DD 000000000h, 077073096h, 0EE0E612Ch, 0990951BAh
+ DD 0076DC419h, 0706AF48Fh, 0E963A535h, 09E6495A3h
+ DD 00EDB8832h, 079DCB8A4h, 0E0D5E91Eh, 097D2D988h
+ DD 009B64C2Bh, 07EB17CBDh, 0E7B82D07h, 090BF1D91h
+ DD 01DB71064h, 06AB020F2h, 0F3B97148h, 084BE41DEh
+ DD 01ADAD47Dh, 06DDDE4EBh, 0F4D4B551h, 083D385C7h
+ DD 0136C9856h, 0646BA8C0h, 0FD62F97Ah, 08A65C9ECh
+ DD 014015C4Fh, 063066CD9h, 0FA0F3D63h, 08D080DF5h
+ DD 03B6E20C8h, 04C69105Eh, 0D56041E4h, 0A2677172h
+ DD 03C03E4D1h, 04B04D447h, 0D20D85FDh, 0A50AB56Bh
+ DD 035B5A8FAh, 042B2986Ch, 0DBBBC9D6h, 0ACBCF940h
+ DD 032D86CE3h, 045DF5C75h, 0DCD60DCFh, 0ABD13D59h
+ DD 026D930ACh, 051DE003Ah, 0C8D75180h, 0BFD06116h
+ DD 021B4F4B5h, 056B3C423h, 0CFBA9599h, 0B8BDA50Fh
+ DD 02802B89Eh, 05F058808h, 0C60CD9B2h, 0B10BE924h
+ DD 02F6F7C87h, 058684C11h, 0C1611DABh, 0B6662D3Dh
+ DD 076DC4190h, 001DB7106h, 098D220BCh, 0EFD5102Ah
+ DD 071B18589h, 006B6B51Fh, 09FBFE4A5h, 0E8B8D433h
+ DD 07807C9A2h, 00F00F934h, 09609A88Eh, 0E10E9818h
+ DD 07F6A0DBBh, 0086D3D2Dh, 091646C97h, 0E6635C01h
+ DD 06B6B51F4h, 01C6C6162h, 0856530D8h, 0F262004Eh
+ DD 06C0695EDh, 01B01A57Bh, 08208F4C1h, 0F50FC457h
+ DD 065B0D9C6h, 012B7E950h, 08BBEB8EAh, 0FCB9887Ch
+ DD 062DD1DDFh, 015DA2D49h, 08CD37CF3h, 0FBD44C65h
+ DD 04DB26158h, 03AB551CEh, 0A3BC0074h, 0D4BB30E2h
+ DD 04ADFA541h, 03DD895D7h, 0A4D1C46Dh, 0D3D6F4FBh
+ DD 04369E96Ah, 0346ED9FCh, 0AD678846h, 0DA60B8D0h
+ DD 044042D73h, 033031DE5h, 0AA0A4C5Fh, 0DD0D7CC9h
+ DD 05005713Ch, 0270241AAh, 0BE0B1010h, 0C90C2086h
+ DD 05768B525h, 0206F85B3h, 0B966D409h, 0CE61E49Fh
+ DD 05EDEF90Eh, 029D9C998h, 0B0D09822h, 0C7D7A8B4h
+ DD 059B33D17h, 02EB40D81h, 0B7BD5C3Bh, 0C0BA6CADh
+ DD 0EDB88320h, 09ABFB3B6h, 003B6E20Ch, 074B1D29Ah
+ DD 0EAD54739h, 09DD277AFh, 004DB2615h, 073DC1683h
+ DD 0E3630B12h, 094643B84h, 00D6D6A3Eh, 07A6A5AA8h
+ DD 0E40ECF0Bh, 09309FF9Dh, 00A00AE27h, 07D079EB1h
+ DD 0F00F9344h, 08708A3D2h, 01E01F268h, 06906C2FEh
+ DD 0F762575Dh, 0806567CBh, 0196C3671h, 06E6B06E7h
+ DD 0FED41B76h, 089D32BE0h, 010DA7A5Ah, 067DD4ACCh
+ DD 0F9B9DF6Fh, 08EBEEFF9h, 017B7BE43h, 060B08ED5h
+ DD 0D6D6A3E8h, 0A1D1937Eh, 038D8C2C4h, 04FDFF252h
+ DD 0D1BB67F1h, 0A6BC5767h, 03FB506DDh, 048B2364Bh
+ DD 0D80D2BDAh, 0AF0A1B4Ch, 036034AF6h, 041047A60h
+ DD 0DF60EFC3h, 0A867DF55h, 0316E8EEFh, 04669BE79h
+ DD 0CB61B38Ch, 0BC66831Ah, 0256FD2A0h, 05268E236h
+ DD 0CC0C7795h, 0BB0B4703h, 0220216B9h, 05505262Fh
+ DD 0C5BA3BBEh, 0B2BD0B28h, 02BB45A92h, 05CB36A04h
+ DD 0C2D7FFA7h, 0B5D0CF31h, 02CD99E8Bh, 05BDEAE1Dh
+ DD 09B64C2B0h, 0EC63F226h, 0756AA39Ch, 0026D930Ah
+ DD 09C0906A9h, 0EB0E363Fh, 072076785h, 005005713h
+ DD 095BF4A82h, 0E2B87A14h, 07BB12BAEh, 00CB61B38h
+ DD 092D28E9Bh, 0E5D5BE0Dh, 07CDCEFB7h, 00BDBDF21h
+ DD 086D3D2D4h, 0F1D4E242h, 068DDB3F8h, 01FDA836Eh
+ DD 081BE16CDh, 0F6B9265Bh, 06FB077E1h, 018B74777h
+ DD 088085AE6h, 0FF0F6A70h, 066063BCAh, 011010B5Ch
+ DD 08F659EFFh, 0F862AE69h, 0616BFFD3h, 0166CCF45h
+ DD 0A00AE278h, 0D70DD2EEh, 04E048354h, 03903B3C2h
+ DD 0A7672661h, 0D06016F7h, 04969474Dh, 03E6E77DBh
+ DD 0AED16A4Ah, 0D9D65ADCh, 040DF0B66h, 037D83BF0h
+ DD 0A9BCAE53h, 0DEBB9EC5h, 047B2CF7Fh, 030B5FFE9h
+ DD 0BDBDF21Ch, 0CABAC28Ah, 053B39330h, 024B4A3A6h
+ DD 0BAD03605h, 0CDD70693h, 054DE5729h, 023D967BFh
+ DD 0B3667A2Eh, 0C4614AB8h, 05D681B02h, 02A6F2B94h
+ DD 0B40BBE37h, 0C30C8EA1h, 05A05DF1Bh, 02D02EF8Dh
+ DD 074726F50h, 0736E6F69h, 0706F4320h, 067697279h
+ DD 028207468h, 031202963h, 020393939h, 048207962h
+ DD 06E656761h, 064655220h, 06E616D64h, 06FBBA36Eh
+end;
+*)
+
+procedure CalcCRC32(Data: Pointer; DataSize: DWord; var CRCValue: DWord);
+ // The following is a little cryptic (but executes very quickly).
+ // The algorithm is as follows:
+ // 1. exclusive-or the input byte with the low-order byte of
+ // the CRC register to get an INDEX
+ // 2. shift the CRC register eight bits to the right
+ // 3. exclusive-or the CRC register with the contents of Table[INDEX]
+ // 4. repeat steps 1 through 3 for all bytes
+var
+ i: Integer;
+ q: ^Byte;
+begin
+ q := Data;
+ if DataSize = 0 then
+ exit;
+ for i := 0 to DataSize - 1 do
+ begin
+ CRCValue := (CRCValue SHR 8) XOR CRC32Table[q^ XOR (CRCValue AND $000000FF)];
+ Inc(q);
+ end;
+end;
+
+{a Random generated Testvector 256bit - 32 Bytes, it's used for Self Test}
+{
+function GetTestVector: PAnsiChar; assembler; register;
+asm
+ MOV EAX,OFFSET @Vector
+ RET
+@Vector: DB 030h,044h,0EDh,06Eh,045h,0A4h,096h,0F5h
+ DB 0F6h,035h,0A2h,0EBh,03Dh,01Ah,05Dh,0D6h
+ DB 0CBh,01Dh,009h,082h,02Dh,0BDh,0F5h,060h
+ DB 0C2h,0B8h,058h,0A1h,091h,0F9h,081h,0B1h
+ DB 000h,000h,000h,000h,000h,000h,000h,000h
+end;
+}
+var
+ TableCRC: DWord;
+
+initialization
+ {this calculate a Checksum (CRC32) over the function CRC32 and the TestVector,
+ if InitTestIsOk = False any modification from Testvector or CRC32() detected, :-) }
+ TableCRC := $FFFFFFFF;
+ CalcCRC32(@CRC32Table[0], SizeOf(CRC32Table), TableCRC);
+ TableCRC := not TableCRC;
+ if TableCRC <> $6FCF9E13 then
+ raise Exception.Create('Bad case, wrong CRC table');
+
+finalization
+end.
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