846 lines
31 KiB
ObjectPascal
846 lines
31 KiB
ObjectPascal
{**
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*
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* This file is part of the RenegadeBBS project.
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*
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* sikofitt <sikofitt@gmail.com>
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*
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* For the full copyright and license information,
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* pleave view the LICENSE file that was distributed
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* with this source code.
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*
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*}
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unit BCrypt;
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{$mode objfpc}{$H+}
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{$CODEPAGE UTF-8}
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interface
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uses
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sysutils,
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classes
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;
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const
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// bcrypt uses 128-bit (16-byte) salt
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BCRYPT_SALT_LEN = 16;
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BLOWFISH_NUM_ROUNDS = 16;
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BCRYPT_DEFAULT_COST = 12;
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PBoxOrg: array[0..17] of DWord = (
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$243f6a88, $85a308d3, $13198a2e, $03707344, $a4093822, $299f31d0, $082efa98,
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$ec4e6c89, $452821e6, $38d01377, $be5466cf, $34e90c6c, $c0ac29b7, $c97c50dd,
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$3f84d5b5, $b5470917, $9216d5d9, $8979fb1b
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);
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SBoxOrg: array[0..1023] of DWord = (
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$d1310ba6, $98dfb5ac, $2ffd72db, $d01adfb7, $b8e1afed, $6a267e96, $ba7c9045,
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$f12c7f99, $24a19947, $b3916cf7, $0801f2e2, $858efc16, $636920d8, $71574e69,
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$a458fea3, $f4933d7e, $0d95748f, $728eb658, $718bcd58, $82154aee, $7b54a41d,
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$c25a59b5, $9c30d539, $2af26013, $c5d1b023, $286085f0, $ca417918, $b8db38ef,
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$8e79dcb0, $603a180e, $6c9e0e8b, $b01e8a3e, $d71577c1, $bd314b27, $78af2fda,
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$55605c60, $e65525f3, $aa55ab94, $57489862, $63e81440, $55ca396a, $2aab10b6,
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$b4cc5c34, $1141e8ce, $a15486af, $7c72e993, $b3ee1411, $636fbc2a, $2ba9c55d,
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$741831f6, $ce5c3e16, $9b87931e, $afd6ba33, $6c24cf5c, $7a325381, $28958677,
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$3b8f4898, $6b4bb9af, $c4bfe81b, $66282193, $61d809cc, $fb21a991, $487cac60,
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$5dec8032, $ef845d5d, $e98575b1, $dc262302, $eb651b88, $23893e81, $d396acc5,
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$0f6d6ff3, $83f44239, $2e0b4482, $a4842004, $69c8f04a, $9e1f9b5e, $21c66842,
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$f6e96c9a, $670c9c61, $abd388f0, $6a51a0d2, $d8542f68, $960fa728, $ab5133a3,
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$6eef0b6c, $137a3be4, $ba3bf050, $7efb2a98, $a1f1651d, $39af0176, $66ca593e,
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$82430e88, $8cee8619, $456f9fb4, $7d84a5c3, $3b8b5ebe, $e06f75d8, $85c12073,
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$401a449f, $56c16aa6, $4ed3aa62, $363f7706, $1bfedf72, $429b023d, $37d0d724,
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$d00a1248, $db0fead3, $49f1c09b, $075372c9, $80991b7b, $25d479d8, $f6e8def7,
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$e3fe501a, $b6794c3b, $976ce0bd, $04c006ba, $c1a94fb6, $409f60c4, $5e5c9ec2,
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$196a2463, $68fb6faf, $3e6c53b5, $1339b2eb, $3b52ec6f, $6dfc511f, $9b30952c,
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$cc814544, $af5ebd09, $bee3d004, $de334afd, $660f2807, $192e4bb3, $c0cba857,
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$45c8740f, $d20b5f39, $b9d3fbdb, $5579c0bd, $1a60320a, $d6a100c6, $402c7279,
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$679f25fe, $fb1fa3cc, $8ea5e9f8, $db3222f8, $3c7516df, $fd616b15, $2f501ec8,
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$ad0552ab, $323db5fa, $fd238760, $53317b48, $3e00df82, $9e5c57bb, $ca6f8ca0,
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$1a87562e, $df1769db, $d542a8f6, $287effc3, $ac6732c6, $8c4f5573, $695b27b0,
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$bbca58c8, $e1ffa35d, $b8f011a0, $10fa3d98, $fd2183b8, $4afcb56c, $2dd1d35b,
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$9a53e479, $b6f84565, $d28e49bc, $4bfb9790, $e1ddf2da, $a4cb7e33, $62fb1341,
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$cee4c6e8, $ef20cada, $36774c01, $d07e9efe, $2bf11fb4, $95dbda4d, $ae909198,
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$eaad8e71, $6b93d5a0, $d08ed1d0, $afc725e0, $8e3c5b2f, $8e7594b7, $8ff6e2fb,
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$f2122b64, $8888b812, $900df01c, $4fad5ea0, $688fc31c, $d1cff191, $b3a8c1ad,
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$2f2f2218, $be0e1777, $ea752dfe, $8b021fa1, $e5a0cc0f, $b56f74e8, $18acf3d6,
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$ce89e299, $b4a84fe0, $fd13e0b7, $7cc43b81, $d2ada8d9, $165fa266, $80957705,
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$93cc7314, $211a1477, $e6ad2065, $77b5fa86, $c75442f5, $fb9d35cf, $ebcdaf0c,
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$7b3e89a0, $d6411bd3, $ae1e7e49, $00250e2d, $2071b35e, $226800bb, $57b8e0af,
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$2464369b, $f009b91e, $5563911d, $59dfa6aa, $78c14389, $d95a537f, $207d5ba2,
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$02e5b9c5, $83260376, $6295cfa9, $11c81968, $4e734a41, $b3472dca, $7b14a94a,
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$1b510052, $9a532915, $d60f573f, $bc9bc6e4, $2b60a476, $81e67400, $08ba6fb5,
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$571be91f, $f296ec6b, $2a0dd915, $b6636521, $e7b9f9b6, $ff34052e, $c5855664,
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$53b02d5d, $a99f8fa1, $08ba4799, $6e85076a, $4b7a70e9, $b5b32944, $db75092e,
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$c4192623, $ad6ea6b0, $49a7df7d, $9cee60b8, $8fedb266, $ecaa8c71, $699a17ff,
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$5664526c, $c2b19ee1, $193602a5, $75094c29, $a0591340, $e4183a3e, $3f54989a,
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$5b429d65, $6b8fe4d6, $99f73fd6, $a1d29c07, $efe830f5, $4d2d38e6, $f0255dc1,
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$4cdd2086, $8470eb26, $6382e9c6, $021ecc5e, $09686b3f, $3ebaefc9, $3c971814,
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$6b6a70a1, $687f3584, $52a0e286, $b79c5305, $aa500737, $3e07841c, $7fdeae5c,
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$8e7d44ec, $5716f2b8, $b03ada37, $f0500c0d, $f01c1f04, $0200b3ff, $ae0cf51a,
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$3cb574b2, $25837a58, $dc0921bd, $d19113f9, $7ca92ff6, $94324773, $22f54701,
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$3ae5e581, $37c2dadc, $c8b57634, $9af3dda7, $a9446146, $0fd0030e, $ecc8c73e,
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$a4751e41, $e238cd99, $3bea0e2f, $3280bba1, $183eb331, $4e548b38, $4f6db908,
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$6f420d03, $f60a04bf, $2cb81290, $24977c79, $5679b072, $bcaf89af, $de9a771f,
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$d9930810, $b38bae12, $dccf3f2e, $5512721f, $2e6b7124, $501adde6, $9f84cd87,
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$7a584718, $7408da17, $bc9f9abc, $e94b7d8c, $ec7aec3a, $db851dfa, $63094366,
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$c464c3d2, $ef1c1847, $3215d908, $dd433b37, $24c2ba16, $12a14d43, $2a65c451,
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$50940002, $133ae4dd, $71dff89e, $10314e55, $81ac77d6, $5f11199b, $043556f1,
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$d7a3c76b, $3c11183b, $5924a509, $f28fe6ed, $97f1fbfa, $9ebabf2c, $1e153c6e,
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$86e34570, $eae96fb1, $860e5e0a, $5a3e2ab3, $771fe71c, $4e3d06fa, $2965dcb9,
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$99e71d0f, $803e89d6, $5266c825, $2e4cc978, $9c10b36a, $c6150eba, $94e2ea78,
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$a5fc3c53, $1e0a2df4, $f2f74ea7, $361d2b3d, $1939260f, $19c27960, $5223a708,
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$f71312b6, $ebadfe6e, $eac31f66, $e3bc4595, $a67bc883, $b17f37d1, $018cff28,
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$c332ddef, $be6c5aa5, $65582185, $68ab9802, $eecea50f, $db2f953b, $2aef7dad,
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$5b6e2f84, $1521b628, $29076170, $ecdd4775, $619f1510, $13cca830, $eb61bd96,
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$0334fe1e, $aa0363cf, $b5735c90, $4c70a239, $d59e9e0b, $cbaade14, $eecc86bc,
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$60622ca7, $9cab5cab, $b2f3846e, $648b1eaf, $19bdf0ca, $a02369b9, $655abb50,
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$40685a32, $3c2ab4b3, $319ee9d5, $c021b8f7, $9b540b19, $875fa099, $95f7997e,
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$623d7da8, $f837889a, $97e32d77, $11ed935f, $16681281, $0e358829, $c7e61fd6,
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$96dedfa1, $7858ba99, $57f584a5, $1b227263, $9b83c3ff, $1ac24696, $cdb30aeb,
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$532e3054, $8fd948e4, $6dbc3128, $58ebf2ef, $34c6ffea, $fe28ed61, $ee7c3c73,
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$5d4a14d9, $e864b7e3, $42105d14, $203e13e0, $45eee2b6, $a3aaabea, $db6c4f15,
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$facb4fd0, $c742f442, $ef6abbb5, $654f3b1d, $41cd2105, $d81e799e, $86854dc7,
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$e44b476a, $3d816250, $cf62a1f2, $5b8d2646, $fc8883a0, $c1c7b6a3, $7f1524c3,
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$69cb7492, $47848a0b, $5692b285, $095bbf00, $ad19489d, $1462b174, $23820e00,
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$58428d2a, $0c55f5ea, $1dadf43e, $233f7061, $3372f092, $8d937e41, $d65fecf1,
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$6c223bdb, $7cde3759, $cbee7460, $4085f2a7, $ce77326e, $a6078084, $19f8509e,
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$e8efd855, $61d99735, $a969a7aa, $c50c06c2, $5a04abfc, $800bcadc, $9e447a2e,
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$c3453484, $fdd56705, $0e1e9ec9, $db73dbd3, $105588cd, $675fda79, $e3674340,
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$c5c43465, $713e38d8, $3d28f89e, $f16dff20, $153e21e7, $8fb03d4a, $e6e39f2b,
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$db83adf7, $e93d5a68, $948140f7, $f64c261c, $94692934, $411520f7, $7602d4f7,
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$bcf46b2e, $d4a20068, $d4082471, $3320f46a, $43b7d4b7, $500061af, $1e39f62e,
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$97244546, $14214f74, $bf8b8840, $4d95fc1d, $96b591af, $70f4ddd3, $66a02f45,
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$bfbc09ec, $03bd9785, $7fac6dd0, $31cb8504, $96eb27b3, $55fd3941, $da2547e6,
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$abca0a9a, $28507825, $530429f4, $0a2c86da, $e9b66dfb, $68dc1462, $d7486900,
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$680ec0a4, $27a18dee, $4f3ffea2, $e887ad8c, $b58ce006, $7af4d6b6, $aace1e7c,
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$d3375fec, $ce78a399, $406b2a42, $20fe9e35, $d9f385b9, $ee39d7ab, $3b124e8b,
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$1dc9faf7, $4b6d1856, $26a36631, $eae397b2, $3a6efa74, $dd5b4332, $6841e7f7,
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$ca7820fb, $fb0af54e, $d8feb397, $454056ac, $ba489527, $55533a3a, $20838d87,
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$fe6ba9b7, $d096954b, $55a867bc, $a1159a58, $cca92963, $99e1db33, $a62a4a56,
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$3f3125f9, $5ef47e1c, $9029317c, $fdf8e802, $04272f70, $80bb155c, $05282ce3,
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$95c11548, $e4c66d22, $48c1133f, $c70f86dc, $07f9c9ee, $41041f0f, $404779a4,
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$5d886e17, $325f51eb, $d59bc0d1, $f2bcc18f, $41113564, $257b7834, $602a9c60,
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$dff8e8a3, $1f636c1b, $0e12b4c2, $02e1329e, $af664fd1, $cad18115, $6b2395e0,
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$333e92e1, $3b240b62, $eebeb922, $85b2a20e, $e6ba0d99, $de720c8c, $2da2f728,
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$d0127845, $95b794fd, $647d0862, $e7ccf5f0, $5449a36f, $877d48fa, $c39dfd27,
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$f33e8d1e, $0a476341, $992eff74, $3a6f6eab, $f4f8fd37, $a812dc60, $a1ebddf8,
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$991be14c, $db6e6b0d, $c67b5510, $6d672c37, $2765d43b, $dcd0e804, $f1290dc7,
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$cc00ffa3, $b5390f92, $690fed0b, $667b9ffb, $cedb7d9c, $a091cf0b, $d9155ea3,
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$bb132f88, $515bad24, $7b9479bf, $763bd6eb, $37392eb3, $cc115979, $8026e297,
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$f42e312d, $6842ada7, $c66a2b3b, $12754ccc, $782ef11c, $6a124237, $b79251e7,
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$06a1bbe6, $4bfb6350, $1a6b1018, $11caedfa, $3d25bdd8, $e2e1c3c9, $44421659,
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$0a121386, $d90cec6e, $d5abea2a, $64af674e, $da86a85f, $bebfe988, $64e4c3fe,
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$9dbc8057, $f0f7c086, $60787bf8, $6003604d, $d1fd8346, $f6381fb0, $7745ae04,
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$d736fccc, $83426b33, $f01eab71, $b0804187, $3c005e5f, $77a057be, $bde8ae24,
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$55464299, $bf582e61, $4e58f48f, $f2ddfda2, $f474ef38, $8789bdc2, $5366f9c3,
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$c8b38e74, $b475f255, $46fcd9b9, $7aeb2661, $8b1ddf84, $846a0e79, $915f95e2,
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$466e598e, $20b45770, $8cd55591, $c902de4c, $b90bace1, $bb8205d0, $11a86248,
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$7574a99e, $b77f19b6, $e0a9dc09, $662d09a1, $c4324633, $e85a1f02, $09f0be8c,
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$4a99a025, $1d6efe10, $1ab93d1d, $0ba5a4df, $a186f20f, $2868f169, $dcb7da83,
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$573906fe, $a1e2ce9b, $4fcd7f52, $50115e01, $a70683fa, $a002b5c4, $0de6d027,
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$9af88c27, $773f8641, $c3604c06, $61a806b5, $f0177a28, $c0f586e0, $006058aa,
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$30dc7d62, $11e69ed7, $2338ea63, $53c2dd94, $c2c21634, $bbcbee56, $90bcb6de,
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$ebfc7da1, $ce591d76, $6f05e409, $4b7c0188, $39720a3d, $7c927c24, $86e3725f,
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$724d9db9, $1ac15bb4, $d39eb8fc, $ed545578, $08fca5b5, $d83d7cd3, $4dad0fc4,
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$1e50ef5e, $b161e6f8, $a28514d9, $6c51133c, $6fd5c7e7, $56e14ec4, $362abfce,
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$ddc6c837, $d79a3234, $92638212, $670efa8e, $406000e0, $3a39ce37, $d3faf5cf,
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$abc27737, $5ac52d1b, $5cb0679e, $4fa33742, $d3822740, $99bc9bbe, $d5118e9d,
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$bf0f7315, $d62d1c7e, $c700c47b, $b78c1b6b, $21a19045, $b26eb1be, $6a366eb4,
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$5748ab2f, $bc946e79, $c6a376d2, $6549c2c8, $530ff8ee, $468dde7d, $d5730a1d,
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$4cd04dc6, $2939bbdb, $a9ba4650, $ac9526e8, $be5ee304, $a1fad5f0, $6a2d519a,
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$63ef8ce2, $9a86ee22, $c089c2b8, $43242ef6, $a51e03aa, $9cf2d0a4, $83c061ba,
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$9be96a4d, $8fe51550, $ba645bd6, $2826a2f9, $a73a3ae1, $4ba99586, $ef5562e9,
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$c72fefd3, $f752f7da, $3f046f69, $77fa0a59, $80e4a915, $87b08601, $9b09e6ad,
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$3b3ee593, $e990fd5a, $9e34d797, $2cf0b7d9, $022b8b51, $96d5ac3a, $017da67d,
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$d1cf3ed6, $7c7d2d28, $1f9f25cf, $adf2b89b, $5ad6b472, $5a88f54c, $e029ac71,
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$e019a5e6, $47b0acfd, $ed93fa9b, $e8d3c48d, $283b57cc, $f8d56629, $79132e28,
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$785f0191, $ed756055, $f7960e44, $e3d35e8c, $15056dd4, $88f46dba, $03a16125,
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$0564f0bd, $c3eb9e15, $3c9057a2, $97271aec, $a93a072a, $1b3f6d9b, $1e6321f5,
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$f59c66fb, $26dcf319, $7533d928, $b155fdf5, $03563482, $8aba3cbb, $28517711,
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$c20ad9f8, $abcc5167, $ccad925f, $4de81751, $3830dc8e, $379d5862, $9320f991,
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$ea7a90c2, $fb3e7bce, $5121ce64, $774fbe32, $a8b6e37e, $c3293d46, $48de5369,
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$6413e680, $a2ae0810, $dd6db224, $69852dfd, $09072166, $b39a460a, $6445c0dd,
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$586cdecf, $1c20c8ae, $5bbef7dd, $1b588d40, $ccd2017f, $6bb4e3bb, $dda26a7e,
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$3a59ff45, $3e350a44, $bcb4cdd5, $72eacea8, $fa6484bb, $8d6612ae, $bf3c6f47,
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$d29be463, $542f5d9e, $aec2771b, $f64e6370, $740e0d8d, $e75b1357, $f8721671,
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$af537d5d, $4040cb08, $4eb4e2cc, $34d2466a, $0115af84, $e1b00428, $95983a1d,
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$06b89fb4, $ce6ea048, $6f3f3b82, $3520ab82, $011a1d4b, $277227f8, $611560b1,
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$e7933fdc, $bb3a792b, $344525bd, $a08839e1, $51ce794b, $2f32c9b7, $a01fbac9,
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$e01cc87e, $bcc7d1f6, $cf0111c3, $a1e8aac7, $1a908749, $d44fbd9a, $d0dadecb,
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|
$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
|
|
);
|
|
|
|
MagicText: array[0..5] of DWord = (
|
|
$4f727068, $65616e42, $65686f6c, $64657253, $63727944, $6f756274
|
|
);
|
|
|
|
BsdBase64EncodeTable: array[0..63] of char =
|
|
{ 0:} './' +
|
|
{ 2:} 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
|
|
{28:} 'abcdefghijklmnopqrstuvwxyz' +
|
|
{54:} '0123456789';
|
|
|
|
BsdBase64DecodeTable: array[#0..#127] of integer = (
|
|
// ________________
|
|
{ 0:} -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
// ________________
|
|
{ 16:} -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
// ______________./
|
|
{ 32:} -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1,
|
|
// 0123456789______
|
|
{ 48:} 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, -1, -1, -1, -1, -1, -1,
|
|
// _ABCDEFGHIJKLMNO
|
|
{ 64:} -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
|
|
// PQRSTUVWXYZ_____
|
|
{ 80:} 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, -1, -1, -1, -1, -1,
|
|
// _abcdefghijklmno
|
|
{ 96:} -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
|
|
// pqrstuvwxyz_____
|
|
{113:} 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, -1, -1, -1, -1, -1
|
|
);
|
|
|
|
type
|
|
THashTypes = (bcDefault, bcPHP, bcBSD, bcUnknown);
|
|
RTPasswordInformation = Object
|
|
Algo : THashTypes;
|
|
Cost : Word;
|
|
AlgoName,
|
|
BCryptSalt,
|
|
BCryptHash : AnsiString;
|
|
end;
|
|
UTF8String = type AnsiString(CP_UTF8);
|
|
|
|
EHash = class(EArgumentException);
|
|
|
|
TBCryptHash = class(TObject)
|
|
private
|
|
FSBox: array[0..1023] of DWord;
|
|
FPBox: array[0..17] of DWord;
|
|
function BsdBase64Encode(const RawByteData: TBytes; CharacterLength: Sizeint): AnsiString;
|
|
function BsdBase64Decode(const EncodedString : AnsiString): TBytes;
|
|
function Crypt(const Password : UTF8String; const Salt : AnsiString; Cost : Byte; HashType : THashTypes) : AnsiString;
|
|
function CryptRaw(const HashKey, Salt: TBytes; Cost : Byte): TBytes;
|
|
procedure EKSKey(const Salt, HashKey: TBytes);
|
|
procedure Encipher(var lr: array of DWord; const offset: SizeInt);
|
|
function FormatPasswordHash(const Salt, Hash: TBytes; Cost : Byte; HashType : THashTypes): AnsiString;
|
|
function getRandomBlockFileName : AnsiString;
|
|
procedure InitializeKey();
|
|
function isBSDAlphabet(CurrentCharacter : Char) : Boolean;
|
|
function MakeSalt : TBytes;
|
|
function MTRandomBytes(NumberOfBytes : SizeUInt) : AnsiString;
|
|
procedure NKey(const HashKey: TBytes);
|
|
function osHasRandomBlock : Boolean;
|
|
function osHasURandomBlock : Boolean;
|
|
function ResolveHashType(const HashType : AnsiString) : THashTypes;
|
|
function StreamToWord(const RawByteData: TBytes; var offset: SizeInt): DWord;
|
|
function UnixRandomBytes(NumberOfBytes : SizeUInt) : AnsiString;
|
|
public
|
|
constructor Create; overload;
|
|
destructor Destroy; override;
|
|
function CreateHash(const Password : UTF8String) : AnsiString; overload;
|
|
function CreateHash(const Password : UTF8String; HashType : THashTypes) : AnsiString; overload;
|
|
function CreateHash(const Password : UTF8String; HashType : THashTypes; Cost : Byte) : AnsiString; overload;
|
|
function VerifyHash(const Password : UTF8STring; const Hash : AnsiString) : Boolean;
|
|
function NeedsRehash(const BCryptHash : AnsiString) : Boolean; overload;
|
|
function NeedsRehash(const BCryptHash : AnsiString; Cost : Byte) : Boolean; overload;
|
|
function HashGetInfo(const Hash : AnsiString) : RTPasswordInformation;
|
|
end;
|
|
|
|
implementation
|
|
|
|
Uses
|
|
Math; // @Todo : Remove and use Renegade.Random
|
|
|
|
constructor TBCryptHash.Create;
|
|
begin
|
|
|
|
inherited Create;
|
|
end;
|
|
|
|
destructor TBCryptHash.Destroy;
|
|
begin
|
|
inherited Destroy;
|
|
end;
|
|
|
|
function TBCryptHash.BsdBase64Decode(const EncodedString : AnsiString): TBytes;
|
|
|
|
function Char64(Character: AnsiChar): Sizeint;
|
|
begin
|
|
if Ord(Character) > Length(BsdBase64DecodeTable) then
|
|
begin
|
|
Result := -1;
|
|
end
|
|
else begin
|
|
Result := BsdBase64DecodeTable[Character];
|
|
end;
|
|
end; { Char64 }
|
|
|
|
procedure Append(Value: Byte);
|
|
var
|
|
i: SizeUint;
|
|
begin
|
|
i := Length(Result);
|
|
SetLength(Result, i + 1);
|
|
Result[i] := Value;
|
|
end; { Append }
|
|
|
|
var
|
|
i,
|
|
EncodedStringLength,
|
|
c1, c2, c3, c4: Sizeint;
|
|
|
|
begin
|
|
SetLength(Result, 0);
|
|
i := 1;
|
|
EncodedStringLength := Length(EncodedString);
|
|
while (i < EncodedStringLength) and (Length(Result) < BCRYPT_SALT_LEN) do
|
|
begin
|
|
c1 := Char64(EncodedString[i]);
|
|
Inc(i);
|
|
c2 := Char64(EncodedString[i]);
|
|
Inc(i);
|
|
if (c1 = -1) or (c2 = -1) then
|
|
begin
|
|
Exit;
|
|
end;
|
|
|
|
{
|
|
Now we have at least one byte in c1|c2
|
|
c1 = ..111111
|
|
c2 = ..112222
|
|
}
|
|
Append((c1 shl 2) or ((c2 and $30) shr 4));
|
|
//If there's a 3rd character, then we can use c2|c3 to form the second byte
|
|
if (i > EncodedStringLength) or (Length(Result) >= BCRYPT_SALT_LEN) then
|
|
begin
|
|
Break;
|
|
end;
|
|
|
|
c3 := Char64(EncodedString[i]);
|
|
Inc(i);
|
|
if (c3 = -1) then
|
|
begin
|
|
Exit;
|
|
end;
|
|
|
|
{
|
|
Now we have the next byte in c2|c3
|
|
c2 = ..112222
|
|
c3 = ..222233
|
|
}
|
|
Append(((c2 and $0f) shl 4) or ((c3 and $3c) shr 2));
|
|
//If there's a 4th caracter, then we can use c3|c4 to form the third byte
|
|
if (i > EncodedStringLength) or (Length(Result) >= BCRYPT_SALT_LEN) then
|
|
begin
|
|
Break;
|
|
end;
|
|
|
|
c4 := Char64(EncodedString[i]);
|
|
Inc(i);
|
|
if c4 = -1 then
|
|
begin
|
|
Exit;
|
|
end;
|
|
|
|
{
|
|
Now we have the next byte in c3|c4
|
|
c3 = ..222233
|
|
c4 = ..333333
|
|
}
|
|
Append(((c3 and $03) shl 6) or c4);
|
|
end; { While }
|
|
end; { TBCryptHash.BsdBase64Decode }
|
|
|
|
function TBCryptHash.BsdBase64Encode(const RawByteData: TBytes; CharacterLength: Sizeint): AnsiString;
|
|
var
|
|
i,
|
|
b1, b2: SizeInt;
|
|
begin
|
|
Result := '';
|
|
if (CharacterLength <= 0) or (CharacterLength > Length(RawByteData)) then
|
|
begin
|
|
Exit;
|
|
end;
|
|
|
|
i := 0;
|
|
while i < CharacterLength do
|
|
begin
|
|
b1 := RawByteData[i] and $ff;
|
|
Inc(i);
|
|
|
|
Result := Result + BsdBase64EncodeTable[(b1 shr 2) and $3f];
|
|
b1 := (b1 and $03) shl 4;
|
|
if i >= CharacterLength then
|
|
begin
|
|
Result := Result + BsdBase64EncodeTable[b1 and $3f];
|
|
Exit;
|
|
end;
|
|
|
|
b2 := RawByteData[i] and $ff;
|
|
Inc(i);
|
|
b1 := b1 or ((b2 shr 4) and $0f);
|
|
|
|
Result := Result + BsdBase64EncodeTable[b1 and $3f];
|
|
b1 := (b2 and $0f) shl 2;
|
|
if i >= CharacterLength then
|
|
begin
|
|
Result := Result + BsdBase64EncodeTable[b1 and $3f];
|
|
Exit;
|
|
end;
|
|
|
|
b2 := RawByteData[i] and $ff;
|
|
Inc(i);
|
|
b1 := b1 or ((b2 shr 6) and $03);
|
|
Result := Result + BsdBase64EncodeTable[b1 and $3f];
|
|
Result := Result + BsdBase64EncodeTable[b2 and $3f];
|
|
end;
|
|
end; { TBCryptHash.BsdBase64Encode }
|
|
|
|
function TBCryptHash.CryptRaw(const HashKey, Salt: TBytes; Cost : Byte): TBytes;
|
|
var
|
|
CryptData: array[0..5] of DWord;
|
|
CryptLength: integer;
|
|
BCryptRounds: DWord;
|
|
i, j: SizeInt;
|
|
begin
|
|
Move(MagicText[0], CryptData[0], Sizeof(MagicText));
|
|
CryptLength := Length(CryptData);
|
|
BCryptRounds := 1 shl Cost;
|
|
InitializeKey();
|
|
EKSKey(Salt, HashKey);
|
|
|
|
for i := 1 to BCryptRounds do
|
|
begin
|
|
NKey(HashKey);
|
|
NKey(Salt);
|
|
end;
|
|
|
|
for i := 1 to 64 do
|
|
begin
|
|
for j := 0 to (CryptLength shr 1) - 1 do
|
|
begin
|
|
Encipher(CryptData, j shl 1);
|
|
end;
|
|
end;
|
|
|
|
SetLength(Result, CryptLength * 4);
|
|
j := 0;
|
|
for i := 0 to CryptLength - 1 do
|
|
begin
|
|
Result[j] := (CryptData[i] shr 24) and $FF;
|
|
Inc(j);
|
|
Result[j] := (CryptData[i] shr 16) and $FF;
|
|
Inc(j);
|
|
Result[j] := (CryptData[i] shr 8) and $FF;
|
|
Inc(j);
|
|
Result[j] := CryptData[i] and $FF;
|
|
Inc(j);
|
|
end;
|
|
end; { TBCryptHash.CryptRaw }
|
|
|
|
procedure TBCryptHash.EKSKey(const Salt, HashKey: TBytes);
|
|
var
|
|
lr: array[0..1] of DWord;
|
|
i, passwordOffset, saltOffset, PLen, SLen: SizeInt;
|
|
begin
|
|
passwordOffset := 0;
|
|
saltOffset := 0;
|
|
PLen := Length(FPBox);
|
|
SLen := Length(FSBox);
|
|
lr[0] := 0;
|
|
lr[1] := 0;
|
|
|
|
for i := 0 to PLen - 1 do
|
|
begin
|
|
FPBox[i] := FPBox[i] xor StreamToWord(HashKey, passwordOffset);
|
|
end;
|
|
for i := 0 to (PLen div 2) - 1 do
|
|
begin
|
|
lr[0] := lr[0] xor StreamToWord(Salt, saltOffset);
|
|
lr[1] := lr[1] xor StreamToWord(Salt, saltOffset);
|
|
Encipher(lr, 0);
|
|
FPBox[2 * i] := lr[0];
|
|
FPBox[2 * i + 1] := lr[1];
|
|
end;
|
|
for i := 0 to (SLen div 2) - 1 do
|
|
begin
|
|
lr[0] := lr[0] xor StreamToWord(Salt, saltOffset);
|
|
lr[1] := lr[1] xor StreamToWord(Salt, saltOffset);
|
|
Encipher(lr, 0);
|
|
FSBox[2 * i] := lr[0];
|
|
FSBox[2 * i + 1] := lr[1];
|
|
end;
|
|
end; { TBCryptHash.EKSKey }
|
|
|
|
procedure TBCryptHash.Encipher(var lr: array of DWord; const offset: SizeInt);
|
|
var
|
|
i, n, block, r: DWord;
|
|
begin
|
|
block := lr[offset];
|
|
r := lr[offset + 1];
|
|
block := block xor FPBox[0];
|
|
i := 1;
|
|
while i <= BLOWFISH_NUM_ROUNDS - 1 do
|
|
begin
|
|
n := FSBox[(block shr 24) and $FF];
|
|
n := DWord(n + FSBox[$100 or ((block shr 16) and $FF)]);
|
|
n := n xor FSBox[$200 or ((block shr 8) and $FF)];
|
|
n := DWord(n + FSBox[$300 or (block and $FF)]);
|
|
r := r xor (n xor FPBox[i]);
|
|
Inc(i);
|
|
|
|
n := FSBox[(r shr 24) and $FF];
|
|
n := DWord(n + FSBox[$100 or ((r shr 16) and $FF)]);
|
|
n := n xor FSBox[$200 or ((r shr 8) and $FF)];
|
|
n := DWord(n + FSBox[$300 or (r and $FF)]);
|
|
block := block xor (n xor FPBox[i]);
|
|
Inc(i);
|
|
end;
|
|
lr[offset] := r xor FPBox[BLOWFISH_NUM_ROUNDS + 1];
|
|
lr[offset + 1] := block;
|
|
end;
|
|
|
|
function TBCryptHash.FormatPasswordHash(const Salt, Hash: TBytes; Cost : Byte; HashType : THashTypes): AnsiString;
|
|
var
|
|
SaltString: ansistring;
|
|
HashString: ansistring;
|
|
HashPrefix : AnsiString;
|
|
begin
|
|
case HashType of
|
|
bcBSD : begin
|
|
HashPrefix := '2a';
|
|
end;
|
|
bcPHP,bcDefault : begin
|
|
HashPrefix := '2y';
|
|
end;
|
|
end;
|
|
SaltString := BsdBase64Encode(Salt, Length(Salt));
|
|
HashString := BsdBase64Encode(Hash, Length(MagicText) * 4 - 1);
|
|
Result := Format('$%s$%d$%s%s', [HashPrefix, Cost, SaltString, HashString]);
|
|
end;
|
|
|
|
function TBCryptHash.getRandomBlockFileName : AnsiString;
|
|
var
|
|
OSRandomBlockFileName : PAnsiString;
|
|
begin
|
|
OSRandomBlockFileName := NewStr(Space(12));
|
|
SetLength(OSRandomBlockFileName^, 12);
|
|
if osHasURandomBlock then
|
|
begin
|
|
AssignStr(OSRandomBlockFileName, '/dev/urandom');
|
|
end
|
|
else if osHasRandomBlock then
|
|
begin
|
|
AssignStr(OSRandomBlockFileName,'/dev/random');
|
|
end;
|
|
Result := OSRandomBlockFileName^;
|
|
DisposeStr(OSRandomBlockFileName);
|
|
end; { TBCryptHash.getRandomBlockFileName }
|
|
|
|
procedure TBCryptHash.InitializeKey();
|
|
begin
|
|
Move(SBoxOrg, FSBox, Sizeof(FSBox));
|
|
Move(PBoxOrg, FPBox, Sizeof(FPBox));
|
|
end; { TBCryptHash.InitializeKey }
|
|
|
|
function TBCryptHash.isBSDAlphabet(CurrentCharacter : Char) : Boolean;
|
|
begin
|
|
Result := CurrentCharacter in ['.','/','a'..'z', 'A'..'Z', '0'..'9'];
|
|
end; { TBCryptHash.isBSDAlphabet }
|
|
|
|
function TBCryptHash.MTRandomBytes(NumberOfBytes : SizeUInt) : AnsiString;
|
|
var
|
|
RandomByteString : AnsiString;
|
|
Count : SizeUint;
|
|
WorkingByte : sizeUInt;
|
|
begin
|
|
Count := 1;
|
|
WorkingByte := 0;
|
|
SetLength(RandomByteString, (NumberOfBytes * 2) +1);
|
|
|
|
Randomize;
|
|
while Count <= (NumberOfBytes * 2) do
|
|
begin
|
|
{ ???: Replace this with internal Windows CryptGenRandom function
|
|
when I get ahold of a Windows machine. }
|
|
WorkingByte := WorkingByte or RandomRange(1000000, Maxint) xor RandomRange(10000, Maxint);
|
|
RandomByteString[Count] := Chr(WorkingByte mod 256);
|
|
Inc(Count);
|
|
end;
|
|
SetLength(RandomByteString, NumberOfBytes);
|
|
Result := RandomByteString;
|
|
end; { TBCryptHash.MTRandomBytes }
|
|
|
|
procedure TBCryptHash.NKey(const HashKey: TBytes);
|
|
var
|
|
lr: array[0..1] of DWord;
|
|
i, passwordOffset, PLen, SLen: SizeInt;
|
|
begin
|
|
passwordOffset := 0;
|
|
PLen := Length(FPBox);
|
|
SLen := Length(FSBox);
|
|
lr[0] := 0;
|
|
lr[1] := 0;
|
|
|
|
for i := 0 to PLen - 1 do
|
|
begin
|
|
FPBox[i] := FPBox[i] xor StreamToWord(HashKey, passwordOffset);
|
|
end;
|
|
for i := 0 to (PLen div 2) - 1 do
|
|
begin
|
|
Encipher(lr, 0);
|
|
FPBox[2 * i] := lr[0];
|
|
FPBox[2 * i + 1] := lr[1];
|
|
end;
|
|
for i := 0 to (SLen div 2) - 1 do
|
|
begin
|
|
Encipher(lr, 0);
|
|
FSBox[2 * i] := lr[0];
|
|
FSBox[2 * i + 1] := lr[1];
|
|
end;
|
|
end; { TBCryptHash.NKey }
|
|
|
|
function TBCryptHash.osHasRandomBlock : Boolean;
|
|
begin
|
|
osHasRandomBlock := FileExists('/dev/random');
|
|
end; { TBCryptHash.osHasRandomBlock }
|
|
|
|
function TBCryptHash.osHasURandomBlock : Boolean;
|
|
begin
|
|
osHasURandomBlock := FileExists('/dev/urandom');
|
|
end; { TBCryptHash.osHasURandomBlock }
|
|
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function TBCryptHash.MakeSalt : TBytes;
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var
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ByteArray: TBytes;
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RandomTempString : AnsiString;
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i : SizeInt;
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begin
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SetLength(RandomTempString, 17);
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SetLength(ByteArray, 16);
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{$IFDEF UNIX}
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RandomTempString := UnixRandomBytes(BCRYPT_SALT_LEN);
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{$ELSE}
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Randomize;
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RandomTempString := MTRandomBytes(BCRYPT_SALT_LEN);
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{$ENDIF}
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i := 0;
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while i <= Length(RandomTempString) do
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begin
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ByteArray[i] := Ord(RandomTempString[i+1]);
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Inc(i);
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end;
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SetLength(ByteArray, 16);
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Result := ByteArray;
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end;
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function TBCryptHash.StreamToWord(const RawByteData: TBytes; var offset: SizeInt): DWord;
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var
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i: SizeInt;
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begin
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Result := 0;
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for i := 1 to 4 do
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begin
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Result := (Result shl 8) or (RawByteData[offset] and $FF);
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offset := (offset + 1) mod Length(RawByteData);
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end;
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end; { TBCryptHash.StreamToWord }
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function TBCryptHash.UnixRandomBytes(NumberOfBytes : SizeUInt) : AnsiString;
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var
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OSRandomBlockFileName : AnsiString;
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RandomFileStream : TFileStream;
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RandomFileBuffer : AnsiString;
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FileBytesRead : SizeUInt;
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begin
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SetLength(OSRandomBlockFileName, 13);
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OSRandomBlockFileName := getRandomBlockFileName;
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SetLength(RandomFileBuffer, (NumberOfBytes * 2));
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try
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RandomFileStream := TFileStream.Create(OSRandomBlockFileName, fmOpenRead);
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RandomFileStream.Position := 0;
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FileBytesRead := 1;
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|
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while FileBytesRead <= (NumberOfBytes * 2) do
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begin
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RandomFileStream.Read(RandomFileBuffer[FileBytesRead], 1);
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Inc(FileBytesRead);
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end;
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except
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on E:Exception do
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writeln('File : ', OSRandomBlockFileName, ' could not be read or written because: ', E.Message);
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end;
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|
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SetLength(RandomFileBuffer, NumberOfBytes);
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RandomFileStream.Free;
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Result := RandomFileBuffer;
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end; { TBCryptHash.unixRandomBytes }
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function TBCryptHash.CreateHash(const Password : UTF8String) : AnsiString; overload;
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begin
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Result := CreateHash(Password, bcPHP, BCRYPT_DEFAULT_COST);
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end;
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function TBCryptHash.CreateHash(const Password : UTF8String; HashType : THashTypes) : AnsiString; overload;
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begin
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Result := CreateHash(Password, HashType, BCRYPT_DEFAULT_COST);
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end; { TBCryptHash.CreateHash }
|
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function TBCryptHash.CreateHash(const Password : UTF8String; HashType : THashTypes; Cost : Byte) : AnsiString; overload;
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var
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PasswordKey,
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SaltBytes,
|
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Hash : TBytes;
|
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begin
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if (Cost < 10) or (Cost > 30) then
|
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begin
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raise Exception.Create('Invalid value for cost. It must be between 10 and 30.');
|
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end;
|
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SetLength(PasswordKey, Length(Password) + 1);
|
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Move(Password[1], PasswordKey[0], Length(Password));
|
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PasswordKey[High(PasswordKey)] := 0;
|
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SaltBytes := MakeSalt;
|
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Hash := CryptRaw(PasswordKey, SaltBytes, Cost);
|
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Result := FormatPasswordHash(SaltBytes, Hash, Cost, HashType);
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end; { TBCryptHash.CreateHash }
|
|
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function TBCryptHash.Crypt(const Password : UTF8String; const Salt : AnsiString; Cost : Byte; HashType : THashTypes) : AnsiString;
|
|
var
|
|
PasswordKey,
|
|
SaltBytes,
|
|
Hash : TBytes;
|
|
begin
|
|
SetLength(PasswordKey, Length(Password) +1);
|
|
Move(Password[1], PasswordKey[0], Length(Password));
|
|
PasswordKey[High(PasswordKey)] := 0;
|
|
saltBytes := BsdBase64Decode(Salt);
|
|
|
|
Hash := CryptRaw(PasswordKey, SaltBytes, Cost);
|
|
Result := FormatPasswordHash(SaltBytes, Hash, Cost, HashType);
|
|
end;
|
|
|
|
function TBCryptHash.ResolveHashType(const HashType : AnsiString) : THashTypes;
|
|
begin
|
|
case HashType of
|
|
'$2y$': begin
|
|
Result := (bcPHP);
|
|
end;
|
|
'$2a$': begin
|
|
Result := (bcBSD);
|
|
end;
|
|
else
|
|
begin
|
|
Result := (bcUnknown);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function TBCryptHash.VerifyHash(const Password : UTF8String; const Hash : AnsiString) : Boolean;
|
|
var
|
|
WorkingBcryptHash, Salt : AnsiString;
|
|
HashCounter, ResultStatus, BCryptCost : Byte;
|
|
HashType : THashTypes;
|
|
PasswordInfo :RTPasswordInformation;
|
|
Begin
|
|
ResultStatus := 0;
|
|
try
|
|
PasswordInfo := HashGetInfo(Hash);
|
|
except
|
|
on e: EHash do
|
|
begin
|
|
Result := False;
|
|
Exit;
|
|
end;
|
|
end;
|
|
with PasswordInfo do
|
|
begin
|
|
HashType := Algo;
|
|
BCryptCost := Cost;
|
|
Salt := BCryptSalt;
|
|
end;
|
|
WorkingBcryptHash := Crypt(Password, Salt, BCryptCost, HashType);
|
|
if (Length(WorkingBcryptHash) < 60) or (Length(WorkingBcryptHash) > 60) then
|
|
begin
|
|
Result := False;
|
|
Exit;
|
|
end;
|
|
if Length(Hash) <> Length(WorkingBcryptHash) then
|
|
begin
|
|
Result := False;
|
|
Exit;
|
|
end;
|
|
for HashCounter := 1 to Length(Hash) do
|
|
begin
|
|
{ From ext/standard/password.c php_password_verify line 244
|
|
We're using this method instead of = in order to provide
|
|
resistance towards timing attacks. This is a constant time
|
|
equality check that will always check every byte of both
|
|
values. }
|
|
ResultStatus := ResultStatus or (ord(WorkingBcryptHash[HashCounter]) xor ord(Hash[HashCounter]));
|
|
end;
|
|
|
|
Result := (ResultStatus = 0);
|
|
|
|
end;
|
|
|
|
function TBCryptHash.NeedsRehash(const BCryptHash : AnsiString) : Boolean; overload;
|
|
begin
|
|
Result := NeedsRehash(BCryptHash, BCRYPT_DEFAULT_COST);
|
|
end;
|
|
|
|
function TBCryptHash.NeedsRehash(const BCryptHash : AnsiString; Cost : Byte) : Boolean; overload;
|
|
var
|
|
OldCost: Byte;
|
|
begin
|
|
OldCost := StrToInt(Copy(BCryptHash, 5, 2));
|
|
if OldCost <> Cost then
|
|
begin
|
|
Result := True;
|
|
end else
|
|
begin
|
|
Result := False;
|
|
end;
|
|
end;
|
|
|
|
function TBCryptHash.HashGetInfo(const Hash : AnsiString) : RTPasswordInformation;
|
|
var
|
|
PasswordInfo : RTPasswordInformation;
|
|
BCryptCost : Byte;
|
|
BCryptHash,
|
|
BCryptSalt : AnsiString;
|
|
HashType : THashTypes;
|
|
begin
|
|
if (Length(Hash) < 60) or (Length(Hash) > 60) then
|
|
begin
|
|
raise EHash.Create(Format(#10#13'Invalid hash %s'#10#13, [Hash]));
|
|
Exit;
|
|
end;
|
|
HashType := ResolveHashType(Copy(Hash, 1, 4));
|
|
BCryptCost := StrToInt(Copy(Hash, 5, 2));
|
|
BCryptSalt := Copy(Hash, 8, 22);
|
|
BCryptHash := Copy(Hash, 30, 60);
|
|
|
|
PasswordInfo.Algo := HashType;
|
|
PasswordInfo.Cost := BCryptCost;
|
|
PasswordInfo.AlgoName := 'bcrypt';
|
|
PasswordInfo.BCryptSalt := BCryptSalt;
|
|
PasswordInfo.BCryptHash := BCryptHash;
|
|
|
|
Result := PasswordInfo;
|
|
end;
|
|
|
|
end.
|