/
HKStreamRoutines.pas
1776 lines (1640 loc) · 52.9 KB
/
HKStreamRoutines.pas
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unit HKStreamRoutines;
{
----------------------------------------------------------------
THKStreams v1.7 by Harry Kakoulidis 01/2002
prog@xarka.com
http://www.xarka.com/prog/
This is Freeware. Please copy HKStrm17.zip unchanged.
If you find bugs, have options etc. Please send at my e-mail.
The use of this component is at your own risk.
I do not take any responsibility for any damages.
----------------------------------------------------------------
This unit contains code for compressing (LHA) and encrypting
(BLOWFISH). 90% Of this file wasn't written by me, but I copyed it
from other freeware units. I Just added code mostly to make them
usefull for streams (The blowfish implementation needed some work;
LHA Compression routines where ready.
*** LHA Compression
Source File Name : X2000fc.PAS (original lh5unit.pas)
Author (Modified by) : Gregory L. Bullock
The algorithm was created by : Haruhiko Okomura and Haruyasu Yoshizaki.
*** Blowfish
- designed by Bruce Schneier
- adaption to Delphi by Steffen Kirbach and Others
kirbach@t-online.de
home.t-online.de/home/kirbach
}
{$DEFINE PERCOLATE}
{.$B-,R-,S-}
{.$A-,D-,I-,L-,O+,Q-,R-,S-,W-,Y-,Z1}
interface
uses
SysUtils, Classes;
procedure LHACompress(InStr, OutStr: TStream);
procedure LHAExpand(InStr, OutStr: TStream);
Procedure EncryptStream(MS : TMemoryStream; Const Key : string);
Procedure DecryptStream(ms : TmemoryStream; Const Key : string);
function Blowfish_Init(pKey: Pointer; unKeySize: Byte;
pBoxes: Pointer; unRounds: Byte): Boolean;
procedure Blowfish_Done;
procedure Blowfish_ECBEncrypt(pBuffer: Pointer; unCount: Integer);
procedure Blowfish_ECBDecrypt(pBuffer: Pointer; unCount: Integer);
procedure Blowfish_CBCEncrypt(pBuffer: Pointer; unCount: Integer;
var ulCBCLeft, ulCBCRight: LongInt);
procedure Blowfish_CBCDecrypt(pBuffer: Pointer; unCount: Integer;
var ulCBCLeft, ulCBCRight: LongInt);
function Blowfish_GetBoxPointer: Pointer;
implementation
uses narf;
{ *************************************************************** }
type
TBoxes = record
PBox: Array[1..34] of LongInt;
SBox1: Array[1..$100] of LongInt;
SBox2: Array[1..$100] of LongInt;
SBox3: Array[1..$100] of LongInt;
SBox4: Array[1..$100] of LongInt;
end;
type
T64BitArray = Array[1..(MaxInt div 8), 0..1] of LongInt;
const
Pi_Boxes: TBoxes = (PBox: ($243f6a88, $85a308d3, $13198a2e, $03707344,
$a4093822, $299f31d0, $082efa98, $ec4e6c89,
$452821e6, $38d01377, $be5466cf, $34e90c6c,
$c0ac29b7, $c97c50dd, $3f84d5b5, $b5470917,
$9216d5d9, $8979fb1b, $B83ACB02, $2002397A,
$6EC6FB5B, $FFCFD4DD, $4CBF5ED1, $F43FE582,
$3EF4E823, $2D152AF0, $E718C970, $59BD9820,
$1F4A9D62, $E7A529BA, $89E1248D, $3BF88656,
$C5114D0E, $BC4CEE16);
SBox1: ($d1310ba6, $98dfb5ac, $2ffd72db, $d01adfb7,
$b8e1afed, $6a267e96, $ba7c9045, $f12c7f99,
$24a19947, $b3916cf7, $0801f2e2, $858efc16,
$636920d8, $71574e69, $a458fea3, $f4933d7e,
$0d95748f, $728eb658, $718bcd58, $82154aee,
$7b54a41d, $c25a59b5, $9c30d539, $2af26013,
$c5d1b023, $286085f0, $ca417918, $b8db38ef,
$8e79dcb0, $603a180e, $6c9e0e8b, $b01e8a3e,
$d71577c1, $bd314b27, $78af2fda, $55605c60,
$e65525f3, $aa55ab94, $57489862, $63e81440,
$55ca396a, $2aab10b6, $b4cc5c34, $1141e8ce,
$a15486af, $7c72e993, $b3ee1411, $636fbc2a,
$2ba9c55d, $741831f6, $ce5c3e16, $9b87931e,
$afd6ba33, $6c24cf5c, $7a325381, $28958677,
$3b8f4898, $6b4bb9af, $c4bfe81b, $66282193,
$61d809cc, $fb21a991, $487cac60, $5dec8032,
$ef845d5d, $e98575b1, $dc262302, $eb651b88,
$23893e81, $d396acc5, $0f6d6ff3, $83f44239,
$2e0b4482, $a4842004, $69c8f04a, $9e1f9b5e,
$21c66842, $f6e96c9a, $670c9c61, $abd388f0,
$6a51a0d2, $d8542f68, $960fa728, $ab5133a3,
$6eef0b6c, $137a3be4, $ba3bf050, $7efb2a98,
$a1f1651d, $39af0176, $66ca593e, $82430e88,
$8cee8619, $456f9fb4, $7d84a5c3, $3b8b5ebe,
$e06f75d8, $85c12073, $401a449f, $56c16aa6,
$4ed3aa62, $363f7706, $1bfedf72, $429b023d,
$37d0d724, $d00a1248, $db0fead3, $49f1c09b,
$075372c9, $80991b7b, $25d479d8, $f6e8def7,
$e3fe501a, $b6794c3b, $976ce0bd, $04c006ba,
$c1a94fb6, $409f60c4, $5e5c9ec2, $196a2463,
$68fb6faf, $3e6c53b5, $1339b2eb, $3b52ec6f,
$6dfc511f, $9b30952c, $cc814544, $af5ebd09,
$bee3d004, $de334afd, $660f2807, $192e4bb3,
$c0cba857, $45c8740f, $d20b5f39, $b9d3fbdb,
$5579c0bd, $1a60320a, $d6a100c6, $402c7279,
$679f25fe, $fb1fa3cc, $8ea5e9f8, $db3222f8,
$3c7516df, $fd616b15, $2f501ec8, $ad0552ab,
$323db5fa, $fd238760, $53317b48, $3e00df82,
$9e5c57bb, $ca6f8ca0, $1a87562e, $df1769db,
$d542a8f6, $287effc3, $ac6732c6, $8c4f5573,
$695b27b0, $bbca58c8, $e1ffa35d, $b8f011a0,
$10fa3d98, $fd2183b8, $4afcb56c, $2dd1d35b,
$9a53e479, $b6f84565, $d28e49bc, $4bfb9790,
$e1ddf2da, $a4cb7e33, $62fb1341, $cee4c6e8,
$ef20cada, $36774c01, $d07e9efe, $2bf11fb4,
$95dbda4d, $ae909198, $eaad8e71, $6b93d5a0,
$d08ed1d0, $afc725e0, $8e3c5b2f, $8e7594b7,
$8ff6e2fb, $f2122b64, $8888b812, $900df01c,
$4fad5ea0, $688fc31c, $d1cff191, $b3a8c1ad,
$2f2f2218, $be0e1777, $ea752dfe, $8b021fa1,
$e5a0cc0f, $b56f74e8, $18acf3d6, $ce89e299,
$b4a84fe0, $fd13e0b7, $7cc43b81, $d2ada8d9,
$165fa266, $80957705, $93cc7314, $211a1477,
$e6ad2065, $77b5fa86, $c75442f5, $fb9d35cf,
$ebcdaf0c, $7b3e89a0, $d6411bd3, $ae1e7e49,
$00250e2d, $2071b35e, $226800bb, $57b8e0af,
$2464369b, $f009b91e, $5563911d, $59dfa6aa,
$78c14389, $d95a537f, $207d5ba2, $02e5b9c5,
$83260376, $6295cfa9, $11c81968, $4e734a41,
$b3472dca, $7b14a94a, $1b510052, $9a532915,
$d60f573f, $bc9bc6e4, $2b60a476, $81e67400,
$08ba6fb5, $571be91f, $f296ec6b, $2a0dd915,
$b6636521, $e7b9f9b6, $ff34052e, $c5855664,
$53b02d5d, $a99f8fa1, $08ba4799, $6e85076a);
SBox2: ($4b7a70e9, $b5b32944, $db75092e, $c4192623,
$ad6ea6b0, $49a7df7d, $9cee60b8, $8fedb266,
$ecaa8c71, $699a17ff, $5664526c, $c2b19ee1,
$193602a5, $75094c29, $a0591340, $e4183a3e,
$3f54989a, $5b429d65, $6b8fe4d6, $99f73fd6,
$a1d29c07, $efe830f5, $4d2d38e6, $f0255dc1,
$4cdd2086, $8470eb26, $6382e9c6, $021ecc5e,
$09686b3f, $3ebaefc9, $3c971814, $6b6a70a1,
$687f3584, $52a0e286, $b79c5305, $aa500737,
$3e07841c, $7fdeae5c, $8e7d44ec, $5716f2b8,
$b03ada37, $f0500c0d, $f01c1f04, $0200b3ff,
$ae0cf51a, $3cb574b2, $25837a58, $dc0921bd,
$d19113f9, $7ca92ff6, $94324773, $22f54701,
$3ae5e581, $37c2dadc, $c8b57634, $9af3dda7,
$a9446146, $0fd0030e, $ecc8c73e, $a4751e41,
$e238cd99, $3bea0e2f, $3280bba1, $183eb331,
$4e548b38, $4f6db908, $6f420d03, $f60a04bf,
$2cb81290, $24977c79, $5679b072, $bcaf89af,
$de9a771f, $d9930810, $b38bae12, $dccf3f2e,
$5512721f, $2e6b7124, $501adde6, $9f84cd87,
$7a584718, $7408da17, $bc9f9abc, $e94b7d8c,
$ec7aec3a, $db851dfa, $63094366, $c464c3d2,
$ef1c1847, $3215d908, $dd433b37, $24c2ba16,
$12a14d43, $2a65c451, $50940002, $133ae4dd,
$71dff89e, $10314e55, $81ac77d6, $5f11199b,
$043556f1, $d7a3c76b, $3c11183b, $5924a509,
$f28fe6ed, $97f1fbfa, $9ebabf2c, $1e153c6e,
$86e34570, $eae96fb1, $860e5e0a, $5a3e2ab3,
$771fe71c, $4e3d06fa, $2965dcb9, $99e71d0f,
$803e89d6, $5266c825, $2e4cc978, $9c10b36a,
$c6150eba, $94e2ea78, $a5fc3c53, $1e0a2df4,
$f2f74ea7, $361d2b3d, $1939260f, $19c27960,
$5223a708, $f71312b6, $ebadfe6e, $eac31f66,
$e3bc4595, $a67bc883, $b17f37d1, $018cff28,
$c332ddef, $be6c5aa5, $65582185, $68ab9802,
$eecea50f, $db2f953b, $2aef7dad, $5b6e2f84,
$1521b628, $29076170, $ecdd4775, $619f1510,
$13cca830, $eb61bd96, $0334fe1e, $aa0363cf,
$b5735c90, $4c70a239, $d59e9e0b, $cbaade14,
$eecc86bc, $60622ca7, $9cab5cab, $b2f3846e,
$648b1eaf, $19bdf0ca, $a02369b9, $655abb50,
$40685a32, $3c2ab4b3, $319ee9d5, $c021b8f7,
$9b540b19, $875fa099, $95f7997e, $623d7da8,
$f837889a, $97e32d77, $11ed935f, $16681281,
$0e358829, $c7e61fd6, $96dedfa1, $7858ba99,
$57f584a5, $1b227263, $9b83c3ff, $1ac24696,
$cdb30aeb, $532e3054, $8fd948e4, $6dbc3128,
$58ebf2ef, $34c6ffea, $fe28ed61, $ee7c3c73,
$5d4a14d9, $e864b7e3, $42105d14, $203e13e0,
$45eee2b6, $a3aaabea, $db6c4f15, $facb4fd0,
$c742f442, $ef6abbb5, $654f3b1d, $41cd2105,
$d81e799e, $86854dc7, $e44b476a, $3d816250,
$cf62a1f2, $5b8d2646, $fc8883a0, $c1c7b6a3,
$7f1524c3, $69cb7492, $47848a0b, $5692b285,
$095bbf00, $ad19489d, $1462b174, $23820e00,
$58428d2a, $0c55f5ea, $1dadf43e, $233f7061,
$3372f092, $8d937e41, $d65fecf1, $6c223bdb,
$7cde3759, $cbee7460, $4085f2a7, $ce77326e,
$a6078084, $19f8509e, $e8efd855, $61d99735,
$a969a7aa, $c50c06c2, $5a04abfc, $800bcadc,
$9e447a2e, $c3453484, $fdd56705, $0e1e9ec9,
$db73dbd3, $105588cd, $675fda79, $e3674340,
$c5c43465, $713e38d8, $3d28f89e, $f16dff20,
$153e21e7, $8fb03d4a, $e6e39f2b, $db83adf7);
SBox3: ($e93d5a68, $948140f7, $f64c261c, $94692934,
$411520f7, $7602d4f7, $bcf46b2e, $d4a20068,
$d4082471, $3320f46a, $43b7d4b7, $500061af,
$1e39f62e, $97244546, $14214f74, $bf8b8840,
$4d95fc1d, $96b591af, $70f4ddd3, $66a02f45,
$bfbc09ec, $03bd9785, $7fac6dd0, $31cb8504,
$96eb27b3, $55fd3941, $da2547e6, $abca0a9a,
$28507825, $530429f4, $0a2c86da, $e9b66dfb,
$68dc1462, $d7486900, $680ec0a4, $27a18dee,
$4f3ffea2, $e887ad8c, $b58ce006, $7af4d6b6,
$aace1e7c, $d3375fec, $ce78a399, $406b2a42,
$20fe9e35, $d9f385b9, $ee39d7ab, $3b124e8b,
$1dc9faf7, $4b6d1856, $26a36631, $eae397b2,
$3a6efa74, $dd5b4332, $6841e7f7, $ca7820fb,
$fb0af54e, $d8feb397, $454056ac, $ba489527,
$55533a3a, $20838d87, $fe6ba9b7, $d096954b,
$55a867bc, $a1159a58, $cca92963, $99e1db33,
$a62a4a56, $3f3125f9, $5ef47e1c, $9029317c,
$fdf8e802, $04272f70, $80bb155c, $05282ce3,
$95c11548, $e4c66d22, $48c1133f, $c70f86dc,
$07f9c9ee, $41041f0f, $404779a4, $5d886e17,
$325f51eb, $d59bc0d1, $f2bcc18f, $41113564,
$257b7834, $602a9c60, $dff8e8a3, $1f636c1b,
$0e12b4c2, $02e1329e, $af664fd1, $cad18115,
$6b2395e0, $333e92e1, $3b240b62, $eebeb922,
$85b2a20e, $e6ba0d99, $de720c8c, $2da2f728,
$d0127845, $95b794fd, $647d0862, $e7ccf5f0,
$5449a36f, $877d48fa, $c39dfd27, $f33e8d1e,
$0a476341, $992eff74, $3a6f6eab, $f4f8fd37,
$a812dc60, $a1ebddf8, $991be14c, $db6e6b0d,
$c67b5510, $6d672c37, $2765d43b, $dcd0e804,
$f1290dc7, $cc00ffa3, $b5390f92, $690fed0b,
$667b9ffb, $cedb7d9c, $a091cf0b, $d9155ea3,
$bb132f88, $515bad24, $7b9479bf, $763bd6eb,
$37392eb3, $cc115979, $8026e297, $f42e312d,
$6842ada7, $c66a2b3b, $12754ccc, $782ef11c,
$6a124237, $b79251e7, $06a1bbe6, $4bfb6350,
$1a6b1018, $11caedfa, $3d25bdd8, $e2e1c3c9,
$44421659, $0a121386, $d90cec6e, $d5abea2a,
$64af674e, $da86a85f, $bebfe988, $64e4c3fe,
$9dbc8057, $f0f7c086, $60787bf8, $6003604d,
$d1fd8346, $f6381fb0, $7745ae04, $d736fccc,
$83426b33, $f01eab71, $b0804187, $3c005e5f,
$77a057be, $bde8ae24, $55464299, $bf582e61,
$4e58f48f, $f2ddfda2, $f474ef38, $8789bdc2,
$5366f9c3, $c8b38e74, $b475f255, $46fcd9b9,
$7aeb2661, $8b1ddf84, $846a0e79, $915f95e2,
$466e598e, $20b45770, $8cd55591, $c902de4c,
$b90bace1, $bb8205d0, $11a86248, $7574a99e,
$b77f19b6, $e0a9dc09, $662d09a1, $c4324633,
$e85a1f02, $09f0be8c, $4a99a025, $1d6efe10,
$1ab93d1d, $0ba5a4df, $a186f20f, $2868f169,
$dcb7da83, $573906fe, $a1e2ce9b, $4fcd7f52,
$50115e01, $a70683fa, $a002b5c4, $0de6d027,
$9af88c27, $773f8641, $c3604c06, $61a806b5,
$f0177a28, $c0f586e0, $006058aa, $30dc7d62,
$11e69ed7, $2338ea63, $53c2dd94, $c2c21634,
$bbcbee56, $90bcb6de, $ebfc7da1, $ce591d76,
$6f05e409, $4b7c0188, $39720a3d, $7c927c24,
$86e3725f, $724d9db9, $1ac15bb4, $d39eb8fc,
$ed545578, $08fca5b5, $d83d7cd3, $4dad0fc4,
$1e50ef5e, $b161e6f8, $a28514d9, $6c51133c,
$6fd5c7e7, $56e14ec4, $362abfce, $ddc6c837,
$d79a3234, $92638212, $670efa8e, $406000e0);
SBox4: ($3a39ce37, $d3faf5cf, $abc27737, $5ac52d1b,
$5cb0679e, $4fa33742, $d3822740, $99bc9bbe,
$d5118e9d, $bf0f7315, $d62d1c7e, $c700c47b,
$b78c1b6b, $21a19045, $b26eb1be, $6a366eb4,
$5748ab2f, $bc946e79, $c6a376d2, $6549c2c8,
$530ff8ee, $468dde7d, $d5730a1d, $4cd04dc6,
$2939bbdb, $a9ba4650, $ac9526e8, $be5ee304,
$a1fad5f0, $6a2d519a, $63ef8ce2, $9a86ee22,
$c089c2b8, $43242ef6, $a51e03aa, $9cf2d0a4,
$83c061ba, $9be96a4d, $8fe51550, $ba645bd6,
$2826a2f9, $a73a3ae1, $4ba99586, $ef5562e9,
$c72fefd3, $f752f7da, $3f046f69, $77fa0a59,
$80e4a915, $87b08601, $9b09e6ad, $3b3ee593,
$e990fd5a, $9e34d797, $2cf0b7d9, $022b8b51,
$96d5ac3a, $017da67d, $d1cf3ed6, $7c7d2d28,
$1f9f25cf, $adf2b89b, $5ad6b472, $5a88f54c,
$e029ac71, $e019a5e6, $47b0acfd, $ed93fa9b,
$e8d3c48d, $283b57cc, $f8d56629, $79132e28,
$785f0191, $ed756055, $f7960e44, $e3d35e8c,
$15056dd4, $88f46dba, $03a16125, $0564f0bd,
$c3eb9e15, $3c9057a2, $97271aec, $a93a072a,
$1b3f6d9b, $1e6321f5, $f59c66fb, $26dcf319,
$7533d928, $b155fdf5, $03563482, $8aba3cbb,
$28517711, $c20ad9f8, $abcc5167, $ccad925f,
$4de81751, $3830dc8e, $379d5862, $9320f991,
$ea7a90c2, $fb3e7bce, $5121ce64, $774fbe32,
$a8b6e37e, $c3293d46, $48de5369, $6413e680,
$a2ae0810, $dd6db224, $69852dfd, $09072166,
$b39a460a, $6445c0dd, $586cdecf, $1c20c8ae,
$5bbef7dd, $1b588d40, $ccd2017f, $6bb4e3bb,
$dda26a7e, $3a59ff45, $3e350a44, $bcb4cdd5,
$72eacea8, $fa6484bb, $8d6612ae, $bf3c6f47,
$d29be463, $542f5d9e, $aec2771b, $f64e6370,
$740e0d8d, $e75b1357, $f8721671, $af537d5d,
$4040cb08, $4eb4e2cc, $34d2466a, $0115af84,
$e1b00428, $95983a1d, $06b89fb4, $ce6ea048,
$6f3f3b82, $3520ab82, $011a1d4b, $277227f8,
$611560b1, $e7933fdc, $bb3a792b, $344525bd,
$a08839e1, $51ce794b, $2f32c9b7, $a01fbac9,
$e01cc87e, $bcc7d1f6, $cf0111c3, $a1e8aac7,
$1a908749, $d44fbd9a, $d0dadecb, $d50ada38,
$0339c32a, $c6913667, $8df9317c, $e0b12b4f,
$f79e59b7, $43f5bb3a, $f2d519ff, $27d9459c,
$bf97222c, $15e6fc2a, $0f91fc71, $9b941525,
$fae59361, $ceb69ceb, $c2a86459, $12baa8d1,
$b6c1075e, $e3056a0c, $10d25065, $cb03a442,
$e0ec6e0e, $1698db3b, $4c98a0be, $3278e964,
$9f1f9532, $e0d392df, $d3a0342b, $8971f21e,
$1b0a7441, $4ba3348c, $c5be7120, $c37632d8,
$df359f8d, $9b992f2e, $e60b6f47, $0fe3f11d,
$e54cda54, $1edad891, $ce6279cf, $cd3e7e6f,
$1618b166, $fd2c1d05, $848fd2c5, $f6fb2299,
$f523f357, $a6327623, $93a83531, $56cccd02,
$acf08162, $5a75ebb5, $6e163697, $88d273cc,
$de966292, $81b949d0, $4c50901b, $71c65614,
$e6c6c7bd, $327a140a, $45e1d006, $c3f27b9a,
$c9aa53fd, $62a80f00, $bb25bfe2, $35bdd2f6,
$71126905, $b2040222, $b6cbcf7c, $cd769c2b,
$53113ec0, $1640e3d3, $38abbd60, $2547adf0,
$ba38209c, $f746ce76, $77afa1c5, $20756060,
$85cbfe4e, $8ae88dd8, $7aaaf9b0, $4cf9aa7e,
$1948c25c, $02fb8a8c, $01c36ae4, $d6ebe1f9,
$90d4f869, $a65cdea0, $3f09252d, $c208e69f,
$b74e6132, $ce77e25b, $578fdfe3, $3ac372e6));
var
Boxes: TBoxes;
Rounds: LongInt;
procedure BLOWFISH_ENCIPHER(var XR, XL: LongInt);
asm
push ebx
push ecx
push esi
push edi
push eax
push edx
mov eax, [XR]
mov edx, [XL]
mov ebx, 0
mov esi, 0
mov edi, rounds
shl edi, 2
@:xor edx, [esi*1 + offset boxes.pbox]
ror edx, 16
mov bl, dh
mov ecx, [ebx*4 + offset boxes.sbox1]
mov bl, dl
add ecx, [ebx*4 + offset boxes.sbox2]
rol edx, 16
mov bl, dh
xor ecx, [ebx*4 + offset boxes.sbox3]
mov bl, dl
add ecx, [ebx*4 + offset boxes.sbox4]
xor eax, ecx
xchg eax, edx
add esi, 4
cmp esi, edi
jne @
xchg eax, edx
xor eax, [esi*1 + offset boxes.pbox]
xor edx, [esi+4 + offset boxes.pbox]
mov ebx, edx
pop edx
mov [XL], ebx
mov ebx, eax
pop eax
mov [XR], ebx
pop edi
pop esi
pop ecx
pop ebx
ret
end;
procedure BLOWFISH_DECIPHER(var XR, XL: LongInt);
asm
push ebx
push ecx
push esi
push eax
push edx
mov eax, [XR]
mov edx, [XL]
mov ebx, 0
mov esi, rounds
inc esi
shl esi, 2
@:xor edx, [esi*1 + offset boxes.pbox]
ror edx, 16
mov bl, dh
mov ecx, [ebx*4 + offset boxes.sbox1]
mov bl, dl
add ecx, [ebx*4 + offset boxes.sbox2]
rol edx, 16
mov bl, dh
xor ecx, [ebx*4 + offset boxes.sbox3]
mov bl, dl
add ecx, [ebx*4 + offset boxes.sbox4]
xor eax, ecx
xchg eax, edx
sub esi, 4
cmp esi, 4
jne @
xchg eax, edx
xor eax, [4 + offset boxes.pbox]
xor edx, [ offset boxes.pbox]
mov ebx, edx
pop edx
mov [XL], ebx
mov ebx, eax
pop eax
mov [XR], ebx
pop esi
pop ecx
pop ebx
ret
end;
function Blowfish_Init;
type
TpKey = Array[0..53] of Byte;
T_X = Array[Pred(Low(Boxes.PBox))..Pred(High(Boxes.PBox)), 0..3] of Byte;
TPBox = Array[Low(Boxes.PBox)..High(Boxes.PBox) div 2, 0..1] of LongInt;
TSBox = Array[Low(Boxes.SBox1)..High(Boxes.SBox1) div 2, 0..1] of LongInt;
T_Box = Array[Low(Boxes.SBox1)..High(Boxes.SBox1)] of LongInt;
var
i, j: Integer;
XL, XR: LongInt;
begin
Result:= False;
if Assigned(pBoxes) then Boxes:= TBoxes(pBoxes^) else Boxes:= Pi_Boxes;
if unRounds in [2..32] then Rounds:= unRounds + unRounds mod 2
else Rounds:= 16;
for i:= Low(T_X) to Pred((Rounds + 2) * 4) do
T_X(Boxes.PBox)[i div 4, 3 - (i mod 4)]:=
T_X(Boxes.PBox)[i div 4, 3 - (i mod 4)] xor TpKey(pKey^)[i mod unKeySize];
XL:= 0;
XR:= 0;
for i:= Low(TPBox) to ((Rounds + 2) div 2) do
begin
BLOWFISH_ENCIPHER(XR, XL);
TPBox(Boxes.PBox)[i, 0]:= XL;
TPBox(Boxes.PBox)[i, 1]:= XR;
end;
for i:= Low(TSBox) to High(TSBox) do
begin
BLOWFISH_ENCIPHER(XR, XL);
TSBox(Boxes.SBox1)[i, 0]:= XL;
TSBox(Boxes.SBox1)[i, 1]:= XR;
end;
for i:= Low(TSBox) to High(TSBox) do
begin
BLOWFISH_ENCIPHER(XR, XL);
TSBox(Boxes.SBox2)[i, 0]:= XL;
TSBox(Boxes.SBox2)[i, 1]:= XR;
end;
for i:= Low(TSBox) to High(TSBox) do
begin
BLOWFISH_ENCIPHER(XR, XL);
TSBox(Boxes.SBox3)[i, 0]:= XL;
TSBox(Boxes.SBox3)[i, 1]:= XR;
end;
for i:= Low(TSBox) to High(TSBox) do
begin
BLOWFISH_ENCIPHER(XR, XL);
TSBox(Boxes.SBox4)[i, 0]:= XL;
TSBox(Boxes.SBox4)[i, 1]:= XR;
end;
for i:= Low(T_Box) to High(T_Box) do
for j:= Succ(i) to High(T_Box) do
if T_Box(Boxes.SBox1)[i] = T_Box(Boxes.SBox1)[j] then Exit;
for i:= Low(T_Box) to High(T_Box) do
for j:= Succ(i) to High(T_Box) do
if T_Box(Boxes.SBox2)[i] = T_Box(Boxes.SBox2)[j] then Exit;
for i:= Low(T_Box) to High(T_Box) do
for j:= Succ(i) to High(T_Box) do
if T_Box(Boxes.SBox3)[i] = T_Box(Boxes.SBox3)[j] then Exit;
for i:= Low(T_Box) to High(T_Box) do
for j:= Succ(i) to High(T_Box) do
if T_Box(Boxes.SBox4)[i] = T_Box(Boxes.SBox4)[j] then Exit;
Result:= True;
end;
procedure Blowfish_Done;
begin
Rounds:= 16;
Boxes:= Pi_Boxes;
end;
procedure Blowfish_ECBEncrypt;
var
i: Integer;
begin
for i:= 1 to (unCount div 8) do
BLOWFISH_ENCIPHER(T64BitArray(pBuffer^)[i, 1], T64BitArray(pBuffer^)[i, 0]);
end;
procedure Blowfish_ECBDecrypt;
var
i: Integer;
begin
for i:= 1 to (unCount div 8) do
BLOWFISH_DECIPHER(T64BitArray(pBuffer^)[i, 1], T64BitArray(pBuffer^)[i, 0]);
end;
procedure Blowfish_CBCEncrypt;
var
i: Integer;
begin
for i:= 1 to (unCount div 8) do
begin
ulCBCLeft := T64BitArray(pBuffer^)[i, 0] xor ulCBCLeft;
ulCBCRight:= T64BitArray(pBuffer^)[i, 1] xor ulCBCRight;
BLOWFISH_ENCIPHER(ulCBCRight, ulCBCLeft);
T64BitArray(pBuffer^)[i, 0]:= ulCBCLeft;
T64BitArray(pBuffer^)[i, 1]:= ulCBCRight;
end;
end;
procedure Blowfish_CBCDecrypt;
var
i: Integer;
XL, XR: LongInt;
begin
for i:= 1 to (unCount div 8) do
begin
XL:= T64BitArray(pBuffer^)[i, 0];
XR:= T64BitArray(pBuffer^)[i, 1];
BLOWFISH_DECIPHER(T64BitArray(pBuffer^)[i, 1], T64BitArray(pBuffer^)[i, 0]);
T64BitArray(pBuffer^)[i, 0]:= T64BitArray(pBuffer^)[i, 0] xor ulCBCLeft;
T64BitArray(pBuffer^)[i, 1]:= T64BitArray(pBuffer^)[i, 1] xor ulCBCRight;
ulCBCLeft := XL;
ulCBCRight:= XR;
end;
end;
function Blowfish_GetBoxPointer;
begin
Result:= @Boxes;
end;
function SetKeyword(Value: String) : boolean;
begin
result:=Blowfish_Init(PChar(Value), Length(Value), nil, 16);
end;
procedure AddPadding(MS : TStream);
Const Pad : Array[1..8] of char = #1#1#1#1#1#1#1#1;
var num : byte;
begin
num:=8 - ((ms.size+1) mod 8);
ms.Position:=ms.Size;
if num>0 then ms.Write(pad,num);
ms.Write(num,sizeof(num));
end;
Procedure EncryptStream(MS : TMemoryStream; Const Key : string);
begin
if ms.size>0 then
if SetKeyword(Key) then begin
//AddPadding(ms);
Blowfish_ECBEncrypt(ms.memory,ms.Size);
end;
end;
Procedure DecryptStream(ms : TmemoryStream; Const Key : string);
var num : byte;
begin
if ms.size>0 then
if SetKeyword(Key) then begin
Blowfish_ECBDecrypt(ms.memory,ms.Size);
ms.Position:=ms.Size-1;
ms.read(num,sizeof(num));
ms.SetSize(Ms.size-num-1);
end;
end;
{ *************************************************************** }
{ *************************************************************** }
{ *************************************************************** }
{ *************************************************************** }
{LZH Rourines}
{ *************************************************************** }
{ *************************************************************** }
{ *************************************************************** }
{ *************************************************************** }
{ *************************************************************** }
TYPE
{$IFDEF WIN32}
TwoByteInt = SmallInt;
{$ELSE}
TwoByteInt = Integer;
{$ENDIF}
PWord=^TWord;
TWord=ARRAY[0..32759]OF TwoByteInt;
PByte=^TByte;
TByte=ARRAY[0..65519]OF Byte;
CONST
BITBUFSIZ=16;
UCHARMAX=255;
DICBIT=13;
DICSIZ=1 SHL DICBIT;
MATCHBIT=8;
MAXMATCH=1 SHL MATCHBIT;
THRESHOLD=3;
PERCFLAG=$8000;
NC=(UCHARMAX+MAXMATCH+2-THRESHOLD);
CBIT=9;
CODEBIT=16;
NP=DICBIT+1;
NT=CODEBIT+3;
PBIT=4; {Log2(NP)}
TBIT=5; {Log2(NT)}
NPT=NT; {Greater from NP and NT}
NUL=0;
MAXHASHVAL=(3*DICSIZ+(DICSIZ SHR 9+1)*UCHARMAX);
WINBIT=14;
WINDOWSIZE=1 SHL WINBIT;
BUFBIT=13;
BUFSIZE=1 SHL BUFBIT;
TYPE
BufferArray = ARRAY[0..PRED(BUFSIZE)]OF Byte;
LeftRightArray = ARRAY[0..2*(NC-1)]OF Word;
CTableArray = ARRAY[0..4095]OF Word;
CLenArray = ARRAY[0..PRED(NC)]OF Byte;
HeapArray = ARRAY[0..NC]OF Word;
VAR
OrigSize,CompSize:Longint;
InFile,OutFile:TStream;
BitBuf:Word;
n,HeapSize:TwoByteInt;
SubBitBuf,BitCount:Word;
Buffer:^BufferArray;
BufPtr:Word;
Left,Right:^LeftRightArray;
PtTable:ARRAY[0..255]OF Word;
PtLen:ARRAY[0..PRED(NPT)]OF Byte;
CTable:^CTableArray;
CLen:^CLenArray;
BlockSize:Word;
{ The following variables are used by the compression engine only }
Heap:^HeapArray;
LenCnt:ARRAY[0..16]OF Word;
Freq,SortPtr:PWord;
Len:PByte;
Depth:Word;
Buf:PByte;
CFreq:ARRAY[0..2*(NC-1)]OF Word;
PFreq:ARRAY[0..2*(NP-1)]OF Word;
TFreq:ARRAY[0..2*(NT-1)]OF Word;
CCode:ARRAY[0..PRED(NC)]OF Word;
PtCode:ARRAY[0..PRED(NPT)]OF Word;
CPos,OutputPos,OutputMask:Word;
Text,ChildCount:PByte;
Pos,MatchPos,Avail:Word;
Position,Parent,Prev,Next:PWord;
Remainder,MatchLen:TwoByteInt;
Level:PByte;
{********************************** File I/O **********************************}
FUNCTION GetC:Byte;
BEGIN
IF BufPtr=0 THEN
InFile.Read(Buffer^,BUFSIZE);
GetC:=Buffer^[BufPtr];BufPtr:=SUCC(BufPtr)AND PRED(BUFSIZE);
END;
PROCEDURE PutC(c:Byte);
BEGIN
IF BufPtr=BUFSIZE THEN
BEGIN
OutFile.Write(Buffer^,BUFSIZE);BufPtr:=0;
END;
Buffer^[BufPtr]:=C;INC(BufPtr);
END;
FUNCTION BRead(p:POINTER;n:TwoByteInt):TwoByteInt;
BEGIN
BRead := InFile.Read(p^,n);
END;
PROCEDURE BWrite(p:POINTER;n:TwoByteInt);
BEGIN
OutFile.Write(p^,n);
END;
{**************************** Bit handling routines ***************************}
PROCEDURE FillBuf(n:TwoByteInt);
BEGIN
BitBuf:=(BitBuf SHL n);
WHILE n>BitCount DO BEGIN
DEC(n,BitCount);
BitBuf:=BitBuf OR (SubBitBuf SHL n);
IF (CompSize<>0) THEN
BEGIN
DEC(CompSize);SubBitBuf:=GetC;
END ELSE
SubBitBuf:=0;
BitCount:=8;
END;
DEC(BitCount,n);
BitBuf:=BitBuf OR (SubBitBuf SHR BitCount);
END;
FUNCTION GetBits(n:TwoByteInt):Word;
BEGIN
GetBits:=BitBuf SHR (BITBUFSIZ-n);
FillBuf(n);
END;
PROCEDURE PutBits(n:TwoByteInt;x:Word);
BEGIN
IF n<BitCount THEN
BEGIN
DEC(BitCount,n);
SubBitBuf:=SubBitBuf OR (x SHL BitCount);
END ELSE BEGIN
DEC(n,BitCount);
PutC(SubBitBuf OR (x SHR n));INC(CompSize);
IF n<8 THEN
BEGIN
BitCount:=8-n;SubBitBuf:=x SHL BitCount;
END ELSE BEGIN
PutC(x SHR (n-8));INC(CompSize);
BitCount:=16-n;SubBitBuf:=x SHL BitCount;
END;
END;
END;
PROCEDURE InitGetBits;
BEGIN
BitBuf:=0;SubBitBuf:=0;BitCount:=0;FillBuf(BITBUFSIZ);
END;
PROCEDURE InitPutBits;
BEGIN
BitCount:=8;SubBitBuf:=0;
END;
{******************************** Decompression *******************************}
PROCEDURE MakeTable(nchar:TwoByteInt;BitLen:PByte;TableBits:TwoByteInt;Table:PWord);
VAR
count,weight:ARRAY[1..16]OF Word;
start:ARRAY[1..17]OF Word;
p:PWord;
i,k,Len,ch,jutbits,Avail,nextCode,mask:TwoByteInt;
BEGIN
FOR i:=1 TO 16 DO
count[i]:=0;
FOR i:=0 TO PRED(nchar) DO
INC(count[BitLen^[i]]);
start[1]:=0;
FOR i:=1 TO 16 DO
start[SUCC(i)]:=start[i]+(count[i] SHL (16-i));
IF start[17]<>0 THEN
begin raise ECorruptFile.Create('Compressed file is corrupt'); exit; end;
jutbits:=16-TableBits;
FOR i:=1 TO TableBits DO
BEGIN
start[i]:=start[i] SHR jutbits;weight[i]:=1 SHL (TableBits-i);
END;
i:=SUCC(TableBits);
WHILE (i<=16) DO BEGIN
weight[i]:=1 SHL (16-i);INC(i);
END;
i:=start[SUCC(TableBits)] SHR jutbits;
IF i<>0 THEN
BEGIN
k:=1 SHL TableBits;
WHILE i<>k DO BEGIN
Table^[i]:=0;INC(i);
END;
END;
Avail:=nchar;mask:=1 SHL (15-TableBits);
FOR ch:=0 TO PRED(nchar) DO
BEGIN
Len:=BitLen^[ch];
IF Len=0 THEN
CONTINUE;
k:=start[Len];
nextCode:=k+weight[Len];
IF Len<=TableBits THEN
BEGIN
FOR i:=k TO PRED(nextCode) DO
Table^[i]:=ch;
END ELSE BEGIN
p:=Addr(Table^[word(k) SHR jutbits]);i:=Len-TableBits;
WHILE i<>0 DO BEGIN
IF p^[0]=0 THEN
BEGIN
right^[Avail]:=0;left^[Avail]:=0;p^[0]:=Avail;INC(Avail);
END;
IF (k AND mask)<>0 THEN
p:=addr(right^[p^[0]])
ELSE
p:=addr(left^[p^[0]]);
k:=k SHL 1;DEC(i);
END;
p^[0]:=ch;
END;
start[Len]:=nextCode;
END;
END;
PROCEDURE ReadPtLen(nn,nBit,ispecial:TwoByteInt);
VAR
i,c,n:TwoByteInt;
mask:Word;
BEGIN
n:=GetBits(nBit);
IF n=0 THEN
BEGIN
c:=GetBits(nBit);
FOR i:=0 TO PRED(nn) DO
PtLen[i]:=0;
FOR i:=0 TO 255 DO
PtTable[i]:=c;
END ELSE BEGIN
i:=0;
WHILE (i<n) DO BEGIN
c:=BitBuf SHR (BITBUFSIZ-3);
IF c=7 THEN
BEGIN
mask:=1 SHL (BITBUFSIZ-4);
WHILE (mask AND BitBuf)<>0 DO BEGIN
mask:=mask SHR 1;INC(c);
END;
END;
IF c<7 THEN
FillBuf(3)
ELSE
FillBuf(c-3);
PtLen[i]:=c;INC(i);
IF i=ispecial THEN
BEGIN
c:=PRED(TwoByteInt(GetBits(2)));
WHILE c>=0 DO BEGIN
PtLen[i]:=0;INC(i);DEC(c);
END;
END;
END;
WHILE i<nn DO BEGIN
PtLen[i]:=0;INC(i);
END;
try
MakeTable(nn,@PtLen,8,@PtTable);
except
begin raise; exit; end;
end;
END;
END;
PROCEDURE ReadCLen;
VAR
i,c,n:TwoByteInt;
mask:Word;
BEGIN
n:=GetBits(CBIT);
IF n=0 THEN
BEGIN
c:=GetBits(CBIT);
FOR i:=0 TO PRED(NC) DO
CLen^[i]:=0;
FOR i:=0 TO 4095 DO
CTable^[i]:=c;
END ELSE BEGIN
i:=0;
WHILE i<n DO BEGIN
c:=PtTable[BitBuf SHR (BITBUFSIZ-8)];
IF c>=NT THEN
BEGIN
mask:=1 SHL (BITBUFSIZ-9);
REPEAT
IF (BitBuf AND mask)<>0 THEN
c:=right^[c]
ELSE
c:=left^[c];
mask:=mask SHR 1;
UNTIL c<NT;
END;
FillBuf(PtLen[c]);
IF c<=2 THEN
BEGIN
IF c=1 THEN
c:=2+GetBits(4)
ELSE
IF c=2 THEN
c:=19+GetBits(CBIT);
WHILE c>=0 DO BEGIN
CLen^[i]:=0;INC(i);DEC(c);
END;
END ELSE BEGIN
CLen^[i]:=c-2;INC(i);
END;
END;
WHILE i<NC DO BEGIN
CLen^[i]:=0;INC(i);
END;
try
MakeTable(NC,PByte(CLen),12,PWord(CTable));
except
begin raise; exit; end;
end;
END;
END;
FUNCTION DecodeC:Word;
VAR
j,mask:Word;
BEGIN
IF BlockSize=0 THEN
BEGIN
BlockSize:=GetBits(16);
ReadPtLen(NT,TBIT,3);
ReadCLen;
ReadPtLen(NP,PBIT,-1);
END;
DEC(BlockSize);
j:=CTable^[BitBuf SHR (BITBUFSIZ-12)];
IF j>=NC THEN
BEGIN
mask:=1 SHL (BITBUFSIZ-13);
REPEAT
IF (BitBuf AND mask)<>0 THEN
j:=right^[j]
ELSE
j:=left^[j];
mask:=mask SHR 1;