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Blowfish.pas
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Blowfish.pas
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unit Blowfish;
{
***************************************************
* A binary compatible Blowfish implementation *
* written by Dave Barton ([email protected]) *
***************************************************
* 64bit block encryption *
* Variable size key - up to 448bit *
***************************************************
}
interface
uses
Sysutils, Windows;
type
TBlowfishData= record
InitBlock: array[0..7] of Byte; { initial IV }
LastBlock: array[0..7] of Byte; { current IV }
SBoxM: array[0..3, 0..255] of DWORD;
PBoxM: array[0..17] of DWORD;
end;
function BlowfishSelfTest: Boolean;
{ performs a self test on this implementation }
procedure BlowfishInit(out Data: TBlowfishData; Key: Pointer; Len: Integer; IV: Pointer);
{ initializes the TBlowfishData structure with the key information and IV if applicable }
procedure BlowfishBurn(var State: TBlowfishData);
{ erases all information about the key }
procedure BlowfishEncryptECB(const Data: TBlowfishData; InData, OutData: Pointer);
{ encrypts the data in a 64bit block using the ECB mode }
procedure BlowfishEncryptCBC(var Data: TBlowfishData; InData, OutData: Pointer);
{ encrypts the data in a 64bit block using the CBC chaining mode }
procedure BlowfishEncryptOFB(var Data: TBlowfishData; InData, OutData: Pointer);
{ encrypts the data in a 64bit block using the OFB chaining mode }
procedure BlowfishEncryptCFB(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
{ encrypts Len bytes of data using the CFB chaining mode }
procedure BlowfishEncryptOFBC(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
{ encrypts Len bytes of data using the OFB counter chaining mode }
procedure BlowfishDecryptECB(const Data: TBlowfishData; InData, OutData: Pointer);
{ decrypts the data in a 64bit block using the ECB mode }
procedure BlowfishDecryptCBC(var Data: TBlowfishData; InData, OutData: Pointer);
{ decrypts the data in a 64bit block using the CBC chaining mode }
procedure BlowfishDecryptOFB(var Data: TBlowfishData; InData, OutData: Pointer);
{ decrypts the data in a 64bit block using the OFB chaining mode }
procedure BlowfishDecryptCFB(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
{ decrypts Len bytes of data using the CFB chaining mode }
procedure BlowfishDecryptOFBC(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
{ decrypts Len bytes of data using the OFB counter chaining mode }
procedure BlowfishReset(var Data: TBlowfishData);
{ resets the chaining mode information }
procedure BlowfishInitState(var State: TBlowfishData);
{ Copy the S and P boxes into the state }
implementation
{$IFDEF UnitTests}
uses
TestFramework;
type
TBlowfishTests = class(TTestCase)
published
procedure SelfTest;
end;
{$ENDIF}
const
//SBLOCKS ARE THE HEX DIGITS OF PI.
//The amount of hex digits can be increased if you want to experiment with more rounds and longer key lengths
PBox: array[0..17] of DWORD = (
$243f6a88, $85a308d3, $13198a2e, $03707344, $a4093822, $299f31d0,
$082efa98, $ec4e6c89, $452821e6, $38d01377, $be5466cf, $34e90c6c,
$c0ac29b7, $c97c50dd, $3f84d5b5, $b5470917, $9216d5d9, $8979fb1b);
SBox: array[0..3, 0..255] of DWORD = (
//SBox[0]
(
$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
),
//SBox[1]
(
$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
),
//SBox[2]
(
$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
),
//SBox[3]
(
$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, $3ac372e6
)
);
{$R-}
//O = I1 xor I2
procedure XorBlock(I1, I2, O1: PByteArray; Len: Integer);
var
i: Integer;
begin
for i := 0 to Len-1 do
O1[i] := I1[i] xor I2[i];
end;
//P = P + 1
procedure IncBlock(P: PByteArray; Len: Integer);
begin
Inc(P[Len-1]);
if (P[Len-1]= 0) and (Len> 1) then
IncBlock(P,Len-1);
end;
function BlowfishSelfTest;
procedure t(Key, InBlock, ExpectedOutput: Pointer; KeyLength: Integer=8);
var
Block: array[0..7] of Byte;
Data: TBlowfishData;
begin
BlowfishInit(Data, Key, KeyLength, nil);
try
BlowfishEncryptECB(Data, InBlock, @Block);
//Check the actual encrypted block matches the expected block
if not CompareMem(@Block, ExpectedOutput, Sizeof(Block)) then
raise Exception.Create('Blowfish self-test failed.');
//Now go backwards, decrypt the ciper to make sure we get the plaintext back
BlowfishDecryptECB(Data, @Block, @Block);
//Check that decrypting results in original values
if not CompareMem(@Block, InBlock, Sizeof(Block)) then
raise Exception.Create('Blowfish self-test failed.');
finally
BlowfishBurn(Data);
end;
end;
function ByteSwap(const X: Int64): Int64;
begin
Result :=
((X and $00000000000000FF) shl 56) or
((X and $000000000000FF00) shl 40) or
((X and $0000000000FF0000) shl 24) or
((X and $00000000FF000000) shl 8) or
((X and $000000FF00000000) shr 8) or
((X and $0000FF0000000000) shr 24) or
((X and $00FF000000000000) shr 40) or
((X and $FF00000000000000) shr 56);
end;
procedure t2(nKey, nIn, nOut: Int64);
var
key: array[0..7] of Byte;
inBlock: array[0..7] of Byte;
outBlock: array[0..7] of Byte;
begin
//The published test vectors are in big endian, we work in little endian
//Swap the endian of each
nKey := ByteSwap(nKey);
nIn := ByteSwap(nIn);
nOut := ByteSwap(nOut);
Move(nKey, key[0], 8);
Move(nIn, inBlock[0], 8);
Move(nOut, outBlock[0], 8);
t(@key[0], @inBlock[0], @outBlock[0]);
end;
procedure t3(nOut: Int64; KeyLength: Integer);
var
nIn: Int64; //FEDCBA9876543210
const
baseKey: array[0..23] of Byte = ($F0, $E1, $D2, $C3, $B4, $A5, $96, $87, $78, $69, $5A, $4B, $3C, $2D, $1E, $0F, $00, $11, $22, $33, $44, $55, $66, $77);
begin
//Swap endian order of InBlock and expected outBlock
nIn := ByteSwap($FEDCBA9876543210);
nOut := ByteSwap(nOut);
{
Hard part is swapping the endian order of the variable length key
The key if the Byte string F0E1D2C3B4A5968778695A4B3C2D1E0F0011223344556677
varying from 1 Byte to 24 bytes by taking more and more bytes from the key
}
t(@baseKey[0], @nIn, @nOut, KeyLength);
end;
begin
{
Official test vectors from http://www.schneier.com/code/vectors.txt
Test vectors by Eric Young. These tests all assume Blowfish with 16
rounds.
All data is shown as a hex string with 012345 loading as
data[0]=0x01;
data[1]=0x23;
data[2]=0x45;
ecb test data (taken from the DES validation tests)
key bytes clear bytes cipher bytes
}
t2($0000000000000000, $0000000000000000, $4EF997456198DD78);
t2($FFFFFFFFFFFFFFFF, $FFFFFFFFFFFFFFFF, $51866FD5B85ECB8A);
t2($3000000000000000, $1000000000000001, $7D856F9A613063F2);
t2($1111111111111111, $1111111111111111, $2466DD878B963C9D);
t2($0123456789ABCDEF, $1111111111111111, $61F9C3802281B096);
t2($1111111111111111, $0123456789ABCDEF, $7D0CC630AFDA1EC7);
t2($0000000000000000, $0000000000000000, $4EF997456198DD78);
t2($FEDCBA9876543210, $0123456789ABCDEF, $0ACEAB0FC6A0A28D);
t2($7CA110454A1A6E57, $01A1D6D039776742, $59C68245EB05282B);
t2($0131D9619DC1376E, $5CD54CA83DEF57DA, $B1B8CC0B250F09A0);
t2($07A1133E4A0B2686, $0248D43806F67172, $1730E5778BEA1DA4);
t2($3849674C2602319E, $51454B582DDF440A, $A25E7856CF2651EB);
t2($04B915BA43FEB5B6, $42FD443059577FA2, $353882B109CE8F1A);
t2($0113B970FD34F2CE, $059B5E0851CF143A, $48F4D0884C379918);
t2($0170F175468FB5E6, $0756D8E0774761D2, $432193B78951FC98);
t2($43297FAD38E373FE, $762514B829BF486A, $13F04154D69D1AE5);
t2($07A7137045DA2A16, $3BDD119049372802, $2EEDDA93FFD39C79);
t2($04689104C2FD3B2F, $26955F6835AF609A, $D887E0393C2DA6E3);
t2($37D06BB516CB7546, $164D5E404F275232, $5F99D04F5B163969);
t2($1F08260D1AC2465E, $6B056E18759F5CCA, $4A057A3B24D3977B);
t2($584023641ABA6176, $004BD6EF09176062, $452031C1E4FADA8E);
t2($025816164629B007, $480D39006EE762F2, $7555AE39F59B87BD);
t2($49793EBC79B3258F, $437540C8698F3CFA, $53C55F9CB49FC019);
t2($4FB05E1515AB73A7, $072D43A077075292, $7A8E7BFA937E89A3);
t2($49E95D6D4CA229BF, $02FE55778117F12A, $CF9C5D7A4986ADB5);
t2($018310DC409B26D6, $1D9D5C5018F728C2, $D1ABB290658BC778);
t2($1C587F1C13924FEF, $305532286D6F295A, $55CB3774D13EF201);
t2($0101010101010101, $0123456789ABCDEF, $FA34EC4847B268B2);
t2($1F1F1F1F0E0E0E0E, $0123456789ABCDEF, $A790795108EA3CAE);
t2($E0FEE0FEF1FEF1FE, $0123456789ABCDEF, $C39E072D9FAC631D);
t2($0000000000000000, $FFFFFFFFFFFFFFFF, $014933E0CDAFF6E4);
t2($FFFFFFFFFFFFFFFF, $0000000000000000, $F21E9A77B71C49BC);
t2($0123456789ABCDEF, $0000000000000000, $245946885754369A);
t2($FEDCBA9876543210, $FFFFFFFFFFFFFFFF, $6B5C5A9C5D9E0A5A);
//Encrypting [FEDCBA9876543210] with variable key length
//(expectedCiperOutput, numberOfBytesToUseFromSourceKey)
t3($F9AD597C49DB005E, 1);
t3($E91D21C1D961A6D6, 2);
t3($E9C2B70A1BC65CF3, 3);
t3($BE1E639408640F05, 4);
t3($B39E44481BDB1E6E, 5);
t3($9457AA83B1928C0D, 6);
t3($8BB77032F960629D, 7);
t3($E87A244E2CC85E82, 8);
t3($15750E7A4F4EC577, 9);
t3($122BA70B3AB64AE0, 10);
t3($3A833C9AFFC537F6, 11);
t3($9409DA87A90F6BF2, 12);
t3($884F80625060B8B4, 13);
t3($1F85031C19E11968, 14);
t3($79D9373A714CA34F, 15);
t3($93142887EE3BE15C, 16);
t3($03429E838CE2D14B, 17);
t3($A4299E27469FF67B, 18);
t3($AFD5AED1C1BC96A8, 19);
t3($10851C0E3858DA9F, 20);
t3($E6F51ED79B9DB21F, 21);
t3($64A6E14AFD36B46F, 22);
t3($80C7D7D45A5479AD, 23);
t3($05044B62FA52D080, 24);
//Blowfish supports key lengths up to 448 bits (56 bytes).
//But we only have test vectors up to 192 bits (24 bytes)
{
TODO: Test chaining modes
chaining mode test data
key[16] = 0123456789ABCDEFF0E1D2C3B4A59687
iv[8] = FEDCBA9876543210
data[29] = "7654321 Now is the time for " (includes trailing '\0')
data[29] = 37363534333231204E6F77206973207468652074696D6520666F722000
cbc cipher text
cipher[32]= 6B77B4D63006DEE605B156E27403979358DEB9E7154616D959F1652BD5FF92CC
cfb64 cipher text cipher[29]=
E73214A2822139CAF26ECF6D2EB9E76E3DA3DE04D1517200519D57A6C3
ofb64 cipher text cipher[29]=
E73214A2822139CA62B343CC5B65587310DD908D0C241B2263C2CF80DA
}
Result := True;
end;
procedure BlowfishInit(out Data: TBlowfishData; Key: Pointer; Len: Integer; IV: Pointer);
var
i, k: Integer;
A: DWord;
KeyB: PByteArray;
Block: array[0..7] of Byte;
begin
if (Len <= 0) or (Len > 56) then
raise Exception.Create('Blowfish: Key must be between 1 and 56 bytes long');
{
Copy the digits of the number pi first into the subkeys,
then into the S-boxes.
}
BlowfishInitState(Data);
with Data do
begin
{
XOR all the subkeys in the P-array with the encryption key
The first 32 bits of the key are XORed with P1, the next 32 bits with P2, and so on.
The key is viewed as being cyclic; when the process reaches the end of the key,
it starts reusing bits from the beginning to XOR with subkeys.
}
KeyB := Key;
k := 0;
for i := 0 to 17 do
begin
A := KeyB[(k+3) mod Len];
A := A + (KeyB[(k+2) mod Len] shl 8);
A := A + (KeyB[(k+1) mod Len] shl 16);
A := A + (KeyB[k] shl 24);
PBoxM[i] := PBoxM[i] xor A;
k := (k+4) mod Len;
end;
//Blowfsh-encrypt the first 64 bits of its salt argument using the current state of the key schedule.
if IV = nil then
begin
FillChar(InitBlock, 8, 0);
FillChar(LastBlock, 8, 0);
end
else
begin
Move(IV^, InitBlock, 8);
Move(IV^, LastBlock, 8);
end;
FillChar(Block, Sizeof(Block), 0);
for i := 0 to 8 do
begin
BlowfishEncryptECB(Data, @Block, @Block);
PBoxM[i*2] := Block[3] + (Block[2] shl 8) + (Block[1] shl 16) + (Block[0] shl 24);
PBoxM[i*2+1] := Block[7] + (Block[6] shl 8) + (Block[5] shl 16) + (Block[4] shl 24);
end;
for k := 0 to 3 do
begin
for i := 0 to 127 do
begin
BlowfishEncryptECB(Data, @Block, @Block);
SBoxM[k, i*2] := Block[3] + (Block[2] shl 8) + (Block[1] shl 16) + (Block[0] shl 24);
SBoxM[k, i*2+1] := Block[7] + (Block[6] shl 8) + (Block[5] shl 16) + (Block[4] shl 24);
end;
end;
end;
end;
procedure BlowfishInitState(var State: TBlowfishData);
begin
Move(SBox, State.SBoxM, Sizeof(SBox));
Move(PBox, State.PBoxM, Sizeof(PBox));
end;
procedure BlowfishBurn(var State: TBlowfishData);
begin
FillChar(State, Sizeof(State), 0);
end;
{$OVERFLOWCHECKS OFF}
procedure BlowfishEncryptECB(const Data: TBlowfishData; InData, OutData: Pointer);
var
xL, xR: DWord;
begin
Move(InData^, xL, 4);
Move(Pointer(Integer(InData)+4)^, xR, 4);
xL := (xL shr 24) or ((xL shr 8) and $FF00) or ((xL shl 8) and $FF0000) or (xL shl 24);
xR := (xR shr 24) or ((xR shr 8) and $FF00) or ((xR shl 8) and $FF0000) or (xR shl 24);
xL := xL xor Data.PBoxM[0];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[1];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[2];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[3];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[4];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[5];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[6];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[7];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[8];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[9];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[10];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[11];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[12];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[13];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[14];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[15];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[16];
xR := xR xor Data.PBoxM[17];
xL := (xL shr 24) or ((xL shr 8) and $FF00) or ((xL shl 8) and $FF0000) or (xL shl 24);
xR := (xR shr 24) or ((xR shr 8) and $FF00) or ((xR shl 8) and $FF0000) or (xR shl 24);
Move(xR, OutData^, 4);
Move(xL, Pointer(Integer(OutData)+4)^, 4);
end;
procedure BlowfishDecryptECB(const Data: TBlowfishData; InData, OutData: Pointer);
var
xL, xR: DWord;
begin
Move(InData^, xL, 4);
Move(Pointer(Integer(InData)+4)^, xR, 4);
xL := (xL shr 24) or ((xL shr 8) and $FF00) or ((xL shl 8) and $FF0000) or (xL shl 24);
xR := (xR shr 24) or ((xR shr 8) and $FF00) or ((xR shl 8) and $FF0000) or (xR shl 24);
xL := xL xor Data.PBoxM[17];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[16];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[15];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[14];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[13];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[12];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[11];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[10];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[9];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[8];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[7];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[6];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[5];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[4];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[3];
xR := xR xor (((Data.SBoxM[0, (xL shr 24) and $FF] + Data.SBoxM[1, (xL shr 16) and $FF]) xor Data.SBoxM[2, (xL shr 8) and $FF]) + Data.SBoxM[3, xL and $FF]) xor Data.PBoxM[2];
xL := xL xor (((Data.SBoxM[0, (xR shr 24) and $FF] + Data.SBoxM[1, (xR shr 16) and $FF]) xor Data.SBoxM[2, (xR shr 8) and $FF]) + Data.SBoxM[3, xR and $FF]) xor Data.PBoxM[1];
xR := xR xor Data.PBoxM[0];
xL := (xL shr 24) or ((xL shr 8) and $FF00) or ((xL shl 8) and $FF0000) or (xL shl 24);
xR := (xR shr 24) or ((xR shr 8) and $FF00) or ((xR shl 8) and $FF0000) or (xR shl 24);
Move(xR, OutData^, 4);
Move(xL, Pointer(Integer(OutData)+4)^, 4);
end;
{$OVERFLOWCHECKS ON}
procedure BlowfishEncryptCBC(var Data: TBlowfishData; InData, OutData: Pointer);
begin
XorBlock(InData, @Data.LastBlock, OutData, 8);
BlowfishEncryptECB(Data, OutData, OutData);
Move(OutData^, Data.LastBlock, 8);
end;
procedure BlowfishDecryptCBC(var Data: TBlowfishData; InData, OutData: Pointer);
var
TempBlock: array[0..7] of Byte;
begin
Move(InData^, TempBlock, 8);
BlowfishDecryptECB(Data, InData, OutData);
XorBlock(OutData, @Data.LastBlock, OutData, 8);
Move(TempBlock, Data.LastBlock, 8);
end;
procedure BlowfishEncryptCFB(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
var
i: Integer;
TempBlock: array[0..7] of Byte;
begin
for i := 0 to Len-1 do
begin
BlowfishEncryptECB(Data, @Data.LastBlock, @TempBlock);
PByteArray(OutData)[i] := PByteArray(InData)[i] xor TempBlock[0];
Move(Data.LastBlock[1], Data.LastBlock[0], 7);
Data.LastBlock[7] := PByteArray(OutData)[i];
end;
end;
procedure BlowfishDecryptCFB(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
var
i: Integer;
TempBlock: array[0..7] of Byte;
b: Byte;
begin
for i := 0 to Len-1 do
begin
b := PByteArray(InData)[i];
BlowfishEncryptECB(Data, @Data.LastBlock, @TempBlock);
PByteArray(OutData)[i] := PByteArray(InData)[i] xor TempBlock[0];
Move(Data.LastBlock[1], Data.LastBlock[0], 7);
Data.LastBlock[7] := b;
end;
end;
procedure BlowfishEncryptOFB(var Data: TBlowfishData; InData, OutData: Pointer);
begin
BlowfishEncryptECB(Data, @Data.LastBlock, @Data.LastBlock);
XorBlock(@Data.LastBlock, InData, OutData, 8);
end;
procedure BlowfishDecryptOFB(var Data: TBlowfishData; InData, OutData: Pointer);
begin
BlowfishEncryptECB(Data, @Data.LastBlock, @Data.LastBlock);
XorBlock(@Data.LastBlock, InData, OutData, 8);
end;
procedure BlowfishEncryptOFBC(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
var
i: Integer;
TempBlock: array[0..7] of Byte;
begin
for i := 0 to Len-1 do
begin
BlowfishEncryptECB(Data, @Data.LastBlock, @TempBlock);
PByteArray(OutData)[i] := PByteArray(InData)[i] xor TempBlock[0];
IncBlock(@Data.LastBlock, 8);
end;
end;
procedure BlowfishDecryptOFBC(var Data: TBlowfishData; InData, OutData: Pointer; Len: Integer);
var
i: Integer;
TempBlock: array[0..7] of Byte;
begin
for i := 0 to Len-1 do
begin
BlowfishEncryptECB(Data, @Data.LastBlock, @TempBlock);
PByteArray(OutData)[i] := PByteArray(InData)[i] xor TempBlock[0];
IncBlock(@Data.LastBlock, 8);
end;
end;
procedure BlowfishReset(var Data: TBlowfishData);
begin
Move(Data.InitBlock, Data.LastBlock, 8);
end;
{ TBlowfishTests }
{$IFDEF UnitTests}
procedure TBlowfishTests.SelfTest;
begin
CheckTrue(BlowfishSelfTest);
end;
{$ENDIF}
initialization
{$IFDEF UnitTests}
RegisterTest('Library', TBlowfishTests.Suite);
{$ENDIF}
end.