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twofish.xqy
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twofish.xqy
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xquery version "1.0-ml";
module namespace tf = "https://github.com/freshie/ml-encryption/twofish";
import module namespace functx = "http://www.functx.com" at "/MarkLogic/functx/functx-1.0-nodoc-2007-01.xqy";
declare variable $DEBUG as xs:boolean := fn:false();
declare private variable $BYTE_MASK as xs:unsignedByte := 255; (: 0xFF :)
declare private variable $INT_MASK as xs:unsignedInt := 4294967295; (: 0xFFFFFFFF :)
declare private variable $PAD_CHAR_CODEPOINT as xs:unsignedByte := 176;
declare private variable $PAD_CHAR as xs:string := fn:codepoints-to-string($PAD_CHAR_CODEPOINT);
declare private variable $BLOCK_SIZE as xs:unsignedInt := 16; (: bytes in a data-block :)
declare private variable $ROUNDS as xs:unsignedInt := 16;
declare private variable $MAX_ROUNDS as xs:unsignedInt := 16; (: max # rounds (for allocating subkeys) :)
(: Subkey array indices :)
declare private variable $INPUT_WHITEN as xs:unsignedInt := 0;
declare private variable $OUTPUT_WHITEN as xs:unsignedInt := fn:floor($INPUT_WHITEN + $BLOCK_SIZE div 4);
declare private variable $ROUND_SUBKEYS as xs:unsignedInt := fn:floor($OUTPUT_WHITEN + $BLOCK_SIZE div 4); (: 2 * ( #rounds ) :)
declare private variable $TOTAL_SUBKEYS as xs:unsignedInt := $ROUND_SUBKEYS + 2 * $MAX_ROUNDS; (: $ROUND_SUBKEYS + 2 * $MAX_ROUNDS; :)
declare private variable $SK_STEP as xs:unsignedInt := 33686018;
declare private variable $SK_BUMP as xs:unsignedInt := 16843009;
declare private variable $SK_ROTL as xs:unsignedInt := 9;
declare private variable $pMap :=
(: Fixed 8x8 permutation S-boxes :)
let $p0 as xs:unsignedInt* := (
169, 103, 179, 232,
4, 253, 163, 118,
154, 146, 128, 120,
228, 221, 209, 56,
13, 198, 53, 152,
24, 247, 236, 108,
67, 117, 55, 38,
250, 19, 148, 72,
242, 208, 139, 48,
132, 84, 223, 35,
25, 91, 61, 89,
243, 174, 162, 130,
99, 1, 131, 46,
217, 81, 155, 124,
166, 235, 165, 190,
22, 12, 227, 97,
192, 140, 58, 245,
115, 44, 37, 11,
187, 78, 137, 107,
83, 106, 180, 241,
225, 230, 189, 69,
226, 244, 182, 102,
204, 149, 3, 86,
212, 28, 30, 215,
251, 195, 142, 181,
233, 207, 191, 186,
234, 119, 57, 175,
51, 201, 98, 113,
129, 121, 9, 173,
36, 205, 249, 216,
229, 197, 185, 77,
68, 8, 134, 231,
161, 29, 170, 237,
6, 112, 178, 210,
65, 123, 160, 17,
49, 194, 39, 144,
32, 246, 96, 255,
150, 92, 177, 171,
158, 156, 82, 27,
95, 147, 10, 239,
145, 133, 73, 238,
45, 79, 143, 59,
71, 135, 109, 70,
214, 62, 105, 100,
42, 206, 203, 47,
252, 151, 5, 122,
172, 127, 213, 26,
75, 14, 167, 90,
40, 20, 63, 41,
136, 60, 76, 2,
184, 218, 176, 23,
85, 31, 138, 125,
87, 199, 141, 116,
183, 196, 159, 114,
126, 21, 34, 18,
88, 7, 153, 52,
110, 80, 222, 104,
101, 188, 219, 248,
200, 168, 43, 64,
220, 254, 50, 164,
202, 16, 33, 240,
211, 93, 15, 0,
111, 157, 54, 66,
74, 94, 193, 224)
let $p1 as xs:unsignedInt* := (
117, 243, 198, 244,
219, 123, 251, 200,
74, 211, 230, 107,
69, 125, 232, 75,
214, 50, 216, 253,
55, 113, 241, 225,
48, 15, 248, 27,
135, 250, 6, 63,
94, 186, 174, 91,
138, 0, 188, 157,
109, 193, 177, 14,
128, 93, 210, 213,
160, 132, 7, 20,
181, 144, 44, 163,
178, 115, 76, 84,
146, 116, 54, 81,
56, 176, 189, 90,
252, 96, 98, 150,
108, 66, 247, 16,
124, 40, 39, 140,
19, 149, 156, 199,
36, 70, 59, 112,
202, 227, 133, 203,
17, 208, 147, 184,
166, 131, 32, 255,
159, 119, 195, 204,
3, 111, 8, 191,
64, 231, 43, 226,
121, 12, 170, 130,
65, 58, 234, 185,
228, 154, 164, 151,
126, 218, 122, 23,
102, 148, 161, 29,
61, 240, 222, 179,
11, 114, 167, 28,
239, 209, 83, 62,
143, 51, 38, 95,
236, 118, 42, 73,
129, 136, 238, 33,
196, 26, 235, 217,
197, 57, 153, 205,
173, 49, 139, 1,
24, 35, 221, 31,
78, 45, 249, 72,
79, 242, 101, 142,
120, 92, 88, 25,
141, 229, 152, 87,
103, 127, 5, 100,
175, 99, 182, 254,
245, 183, 60, 165,
206, 233, 104, 68,
224, 77, 67, 105,
41, 46, 172, 21,
89, 168, 10, 158,
110, 71, 223, 52,
53, 106, 207, 220,
34, 201, 192, 155,
137, 212, 237, 171,
18, 162, 13, 82,
187, 2, 47, 169,
215, 97, 30, 180,
80, 4, 246, 194,
22, 37, 134, 86,
85, 9, 190, 145)
return
map:new((
map:entry("1",$p1),
map:entry("0",$p0)
));
declare private function tf:P($i as xs:string, $j as xs:unsignedInt) as xs:unsignedInt {
let $index := $j + 1
return map:get($pMap, $i)[$index]
};
(:
: Define the fixed p0/p1 permutations used in keyed S-box lookup.
: By changing the following constant definitions, the S-boxes will
: automatically get changed in the Twofish engine.
:)
declare private variable $P_00 as xs:string := "1";
declare private variable $P_01 as xs:string := "0";
declare private variable $P_02 as xs:string := "0";
declare private variable $P_03 as xs:string := "1"; (:xdmp:xor64($P_01, 1); :)
declare private variable $P_04 as xs:string := "1";
declare private variable $P_10 as xs:string := "0";
declare private variable $P_11 as xs:string := "0";
declare private variable $P_12 as xs:string := "1";
declare private variable $P_13 as xs:string := "1"; (:xdmp:xor64($P_11, 1); :)
declare private variable $P_14 as xs:string := "0";
declare private variable $P_20 as xs:string := "1";
declare private variable $P_21 as xs:string := "1";
declare private variable $P_22 as xs:string := "0";
declare private variable $P_23 as xs:string := "1"; (:xdmp:xor64($P_21, 1); :)
declare private variable $P_24 as xs:string := "0";
declare private variable $P_30 as xs:string := "0";
declare private variable $P_31 as xs:string := "1";
declare private variable $P_32 as xs:string := "1";
declare private variable $P_33 as xs:string := "1"; (:xdmp:xor64($P_31, 1); :)
declare private variable $P_34 as xs:string := "1";
(: Primitive polynomial for GF(256) :)
declare private variable $GF256_FDBK as xs:unsignedInt := 361;
declare private variable $GF256_FDBK_2 as xs:unsignedInt := 180; (: fn:floor($GF256_FDBK div 2) :)
declare private variable $GF256_FDBK_4 as xs:unsignedInt := 90; (: fn:floor($GF256_FDBK div 4) :)
declare private variable $RS_GF_FDBK as xs:unsignedInt := 333; (: field generator :)
declare private variable $MDS_Matrix_Builder as element(builder) :=
element builder {
for $i in 0 to 255
return
element step {
attribute index { $i },
for $x in (0, 1)
let $j := tf:P($x, $i)
return (
element m1 { attribute id { $x }, $j },
element mX { attribute id { $x }, xdmp:and64(tf:Mx_X( $j ), $BYTE_MASK) },
element mY { attribute id { $x }, xdmp:and64(tf:Mx_Y( $j ), $BYTE_MASK) }
)
}
};
declare private variable $MDS_Matrix_Map :=
let $MDS_Matrix_1 as xs:unsignedInt* := (:tf:Build_MDS_Matrix_1(); :)
(
3166450293, 3974898163, 538985414, 3014904308, 3671720923, 33721211, 3806473211, 2661219016, 3385453642, 3570665939, 404253670, 505323371, 2560101957, 2998024317, 2795950824, 640071499, 1010587606, 2475919922, 2189618904, 1381144829, 2071712823, 3149608817, 1532729329, 1195869153, 606354480, 1364320783, 3132802808, 1246425883, 3216984199, 218984698, 2964370182, 1970658879, 3537042782, 2105352378, 1717973422, 976921435, 1499012234, 0, 3452801980, 437969053, 2930650221, 2139073473, 724289457, 3200170254, 3772817536, 2324303965, 993743570, 1684323029, 3638069408, 3890718084, 1600120839, 454758676, 741130933, 4244419728, 825304876, 2155898275, 1936927410, 202146163, 2037997388, 1802191188, 1263207058, 1397975412, 2492763958, 2206408529, 707409464, 3301219504, 572704957, 3587569754, 3183330300, 1212708960, 4294954594, 1280051094, 1094809452, 3351766594, 3958056183, 471602192, 1566401404, 909517352, 1734852647, 3924406156, 1145370899, 336915093, 4126522268, 3486456007, 1061104932, 3233866566, 1920129851, 1414818928, 690572490, 4042274275, 134807173, 3334870987, 4092808977, 2358043856, 2762234259, 3402274488, 1751661478, 3099086211, 943204384, 3857002239, 2913818271, 185304183, 3368558019, 2577006540, 1482222851, 421108335, 235801096, 2509602495, 1886408768, 4160172263, 1852755755, 522153698, 3048553849, 151588620, 1633760426, 1465325186, 2678000449, 2644344890, 286352618, 623234489, 2947538404, 1162152090, 3755969956, 2745392279, 3941258622, 892688602, 3991785594, 1128528919, 4177054566, 4227576212, 926405537, 4210704413, 3267520573, 3031747824, 842161630, 2627498419, 1448535819, 3823360626, 2273796263, 353704732, 4193860335, 1667481553, 875866451, 2593817918, 2981184143, 2088554803, 2290653990, 1027450463, 2711738348, 3840204662, 2172752938, 2442199369, 252705665, 4008618632, 370565614, 3621221153, 2543318468, 2779097114, 4278075371, 1835906521, 2021174981, 3318050105, 488498585, 1987486925, 1044307117, 3419105073, 3065399179, 4025441025, 303177240, 1616954659, 1785376989, 1296954911, 3469666638, 3739122733, 1431674361, 2122209864, 555856463, 50559730, 2694850149, 1583225230, 1515873912, 1701137244, 1650609752, 4261233945, 101119117, 1077970661, 4075994776, 859024471, 387420263, 84250239, 3907542533, 1330609508, 2307484335, 269522275, 1953771446, 168457726, 1549570805, 2610656439, 757936956, 808507045, 774785486, 1229556201, 1179021928, 2004309316, 2829637856, 2526413901, 673758531, 2846435689, 3654908201, 2256965934, 3520169900, 4109650453, 2374833497, 3604382376, 3115957258, 1111625118, 4143366510, 791656519, 3722249951, 589510964, 3435946549, 4059153514, 3250655951, 2240146396, 2408554018, 1903272393, 2425417920, 2863289243, 16904585, 2341200340, 1313770733, 2391699371, 2880152082, 1869561506, 3873854477, 3688624722, 2459073467, 3082270210, 1768540719, 960092585, 3553823959, 2812748641, 2728570142, 3284375988, 1819034704, 117900548, 67403766, 656885442, 2896996118, 3503322661, 1347425158, 3705468758, 2223250005, 3789639945, 2054825406, 320073617
)
let $MDS_Matrix_2 as xs:unsignedInt* := (:tf:Build_MDS_Matrix_2(); :)
(
2849585465, 1737496343, 3010567324, 3906119334, 67438343, 4254618194, 2741338240, 1994384612, 2584233285, 2449623883, 2158026976, 2019973722, 3839733679, 3719326314, 3518980963, 943073834, 223667942, 3326287904, 895667404, 2562650866, 404623890, 4146392043, 3973554593, 1819754817, 1136470056, 1966259388, 936672123, 647727240, 4201647373, 335103044, 2494692347, 1213890174, 4068082435, 3504639116, 2336732854, 809247780, 2225465319, 1413573483, 3741769181, 600137824, 424017405, 1537423930, 1030275778, 1494584717, 4079086828, 2922473062, 2722000751, 2182502231, 1670713360, 22802415, 2202908856, 781289094, 3652545901, 1361019779, 2605951658, 2086886749, 2788911208, 3946839806, 2782277680, 3190127226, 380087468, 202311945, 3811963120, 1629726631, 3236991120, 2360338921, 981507485, 4120009820, 1937837068, 740766001, 628543696, 199710294, 3145437842, 1323945678, 2314273025, 1805590046, 1403597876, 1791291889, 3029976003, 4053228379, 3783477063, 3865778200, 3184009762, 1158584472, 3798867743, 4106859443, 3056563316, 1724643576, 3439303065, 2515145748, 65886296, 1459084508, 3571551115, 471536917, 514695842, 3607942099, 4213957346, 3273509064, 2384027230, 3049401388, 3918088521, 3474112961, 3212744085, 3122691453, 3932426513, 2005142283, 963495365, 2942994825, 869366908, 3382800753, 1657733119, 1899477947, 2180714255, 2034087349, 156361185, 2916892222, 606945087, 3450107510, 4187837781, 3639509634, 3850780736, 3316545656, 3117229349, 1292146326, 1146451831, 134876686, 2249412688, 3878746103, 2714974007, 490797818, 2855559521, 3985395278, 112439472, 1886147668, 2989126515, 3528604475, 1091280799, 2072707586, 2693322968, 290452467, 828885963, 3259377447, 666920807, 2427780348, 539506744, 4135519236, 1618495560, 4281263589, 2517060684, 1548445029, 2982619947, 2876214926, 2651669058, 2629563893, 1391647707, 468929098, 1604730173, 2472125604, 180140473, 4013619705, 2448364307, 2248017928, 1224839569, 3999340054, 763158238, 1337073953, 2403512753, 1004237426, 1203253039, 2269691839, 1831644846, 1189331136, 3596041276, 1048943258, 1764338089, 1685933903, 714375553, 3460902446, 3407333062, 801794409, 4240686525, 2539430819, 90106088, 2060512749, 2894582225, 2140013829, 3585762404, 447260069, 1270294054, 247054014, 2808121223, 1526257109, 673330742, 336665371, 1071543669, 695851481, 2292903662, 1009986861, 1281325433, 45529015, 3096890058, 3663213877, 2963064004, 402408259, 1427801220, 536235341, 2317113689, 2100867762, 1470903091, 3340292047, 2381579782, 1953059667, 3077872539, 3304429463, 2673257901, 1926947811, 2127948522, 357233908, 580816783, 312650667, 1481532002, 132669279, 2581929245, 876159779, 1858205430, 1346661484, 3730649650, 1752319558, 1697030304, 3163803085, 3674462938, 4173773498, 3371867806, 2827146966, 735014510, 1079013488, 3706422661, 4269083146, 847942547, 2760761311, 3393988905, 269753372, 561240023, 4039947444, 3540636884, 1561365130, 266490193, 0, 1872369945, 2648709658, 915379348, 1122420679, 1257032137, 1593692882, 3249241983, 3772295336
)
let $MDS_Matrix_3 as xs:unsignedInt* := (:tf:Build_MDS_Matrix_3(); :)
(
3161832498, 3975408673, 549855299, 3019158473, 3671841283, 41616011, 3808158251, 2663948026, 3377121772, 3570652169, 417732715, 510336671, 2554697742, 2994582072, 2800264914, 642459319, 1020673111, 2469565322, 2195227374, 1392333464, 2067233748, 3144792887, 1542544279, 1205946243, 607134780, 1359958498, 3136862918, 1243302643, 3213344584, 234491248, 2953228467, 1967093214, 3529429757, 2109373728, 1722705457, 979057315, 1502239004, 0, 3451702675, 446503648, 2926423596, 2143387563, 733031367, 3188637369, 3766542496, 2321386000, 1003633490, 1691706554, 3634419848, 3884246949, 1594318824, 454302481, 750070978, 4237360308, 824979751, 2158198885, 1941074730, 208866433, 2035054943, 1800694593, 1267878658, 1400132457, 2486604943, 2203157279, 708323894, 3299919004, 582820552, 3579500024, 3187457475, 1214269560, 4284678094, 1284918279, 1097613687, 3343042534, 3958893348, 470817812, 1568431459, 908604962, 1730635712, 3918326191, 1142113529, 345314538, 4120704443, 3485978392, 1059340077, 3225862371, 1916498651, 1416647788, 701114700, 4041470005, 142936318, 3335243287, 4078039887, 2362477796, 2761139289, 3401108118, 1755736123, 3095640141, 941635624, 3858752814, 2912922966, 192351108, 3368273949, 2580322815, 1476614381, 426711450, 235408906, 2512360830, 1883271248, 4159174448, 1848340175, 534912878, 3044652349, 151783695, 1638555956, 1468159766, 2671877899, 2637864320, 300552548, 632890829, 2951000029, 1167738120, 3752124301, 2744623964, 3934186197, 903492952, 3984256464, 1125598204, 4167497931, 4220844977, 933312467, 4196268608, 3258827368, 3035673804, 853422685, 2629016689, 1443583719, 3815957466, 2275903328, 354161947, 4193253690, 1674666943, 877868201, 2587794053, 2978984258, 2083749073, 2284226715, 1029651878, 2716639703, 3832997087, 2167046548, 2437517569, 260116475, 4001951402, 384702049, 3609319283, 2546243573, 2769986984, 4276878911, 1842965941, 2026207406, 3308897645, 496573925, 1993176740, 1051541212, 3409038183, 3062609479, 4009881435, 303567390, 1612931269, 1792895664, 1293897206, 3461271273, 3727548028, 1442403741, 2118680154, 558834098, 66192250, 2691014694, 1586388505, 1517836902, 1700554059, 1649959502, 4246338885, 109905652, 1088766086, 4070109886, 861352876, 392632208, 92210574, 3892701278, 1331974013, 2309982570, 274927765, 1958114351, 184420981, 1559583890, 2612501364, 758918451, 816132310, 785264201, 1240025481, 1181238898, 2000975701, 2833295576, 2521667076, 675489981, 2842274089, 3643398521, 2251196049, 3517763975, 4095079498, 2371456277, 3601389186, 3104487868, 1117667853, 4134467265, 793194424, 3722435846, 590619449, 3426077794, 4050317764, 3251618066, 2245821931, 2401406878, 1909027233, 2428539120, 2862328403, 25756145, 2345962465, 1324174988, 2393607791, 2870127522, 1872916286, 3859670612, 3679640562, 2461766267, 3070408630, 1764714954, 967391705, 3554136844, 2808194851, 2719916717, 3283403673, 1817209924, 117704453, 83231871, 667035462, 2887167143, 3492139126, 1350979603, 3696680183, 2220196890, 3775521105, 2059303461, 328274927
)
let $MDS_Matrix_4 as xs:unsignedInt* := (:tf:Build_MDS_Matrix_4(); :)
(
3644434905, 2417452944, 1906094961, 3534153938, 84345861, 2555575704, 1702929253, 3756291807, 138779144, 38507010, 2699067552, 1717205094, 3719292125, 2959793584, 3210990015, 908736566, 1424362836, 1126221379, 1657550178, 3203569854, 504502302, 619444004, 3617713367, 2000776311, 3173532605, 851211570, 3564845012, 2609391259, 1879964272, 4181988345, 2986054833, 1518225498, 2047079034, 3834433764, 1203145543, 1009004604, 2783413413, 1097552961, 115203846, 3311412165, 1174214981, 2738510755, 1757560168, 361584917, 569176865, 828812849, 1047503422, 374833686, 2500879253, 1542390107, 1303937869, 2441490065, 3043875253, 528699679, 1403689811, 1667071075, 996714043, 1073670975, 3593512406, 628801061, 2813073063, 252251151, 904979253, 598171939, 4036018416, 2951318703, 2157787776, 2455565714, 2165076865, 657533991, 1993352566, 3881176039, 2073213819, 3922611945, 4043409905, 2669570975, 2838778793, 3304155844, 2579739801, 2539385239, 2202526083, 1796793963, 3357720008, 244860174, 1847583342, 3384014025, 796177967, 3422054091, 4288269567, 3927217642, 3981968365, 4158412535, 3784037601, 454368283, 2913083053, 215209740, 736295723, 499696413, 425627161, 3257710018, 2303322505, 314691346, 2123743102, 545110560, 1678895716, 2215344004, 1841641837, 1787408234, 3514577873, 2708588961, 3472843470, 935031095, 4212097531, 1035303229, 1373702481, 3695095260, 759112749, 2759249316, 2639657373, 4001552622, 2252400006, 2927150510, 3441801677, 76958980, 1433879637, 168691722, 324044307, 821552944, 3543638483, 1090133312, 878815796, 2353982860, 3014657715, 1817473132, 712225322, 1379652178, 194986251, 2332195723, 2295898248, 1341329743, 1741369703, 1177010758, 3227985856, 3036450996, 674766888, 2131031679, 2018009208, 786825006, 122459655, 1264933963, 3341529543, 1871620975, 222469645, 3153435835, 4074459890, 4081720307, 2789040038, 1503957849, 3166243516, 989458234, 4011037167, 4261971454, 26298625, 1628892769, 2094935420, 2988527538, 1118932802, 3681696731, 3090106296, 1220511560, 749628716, 3821029091, 1463604823, 2241478277, 698968361, 2102355069, 2491493012, 1227804233, 398904087, 3395891146, 3284008131, 1554224988, 1592264030, 3505224400, 2278665351, 2382725006, 3127170490, 2829392552, 3072740279, 3116240569, 1619502944, 4174732024, 573974562, 286987281, 3732226014, 2044275065, 2867759274, 858602547, 1601784927, 3065447094, 2529867926, 1479924312, 2630135964, 4232255484, 444880154, 4132249590, 475630108, 951221560, 2889045932, 416270104, 4094070260, 1767076969, 1956362100, 4120364277, 1454219094, 3672339162, 3588914901, 1257510218, 2660180638, 2729120418, 1315067982, 3898542056, 3843922405, 958608441, 3254152897, 1147949124, 1563614813, 1917216882, 648045862, 2479733907, 64674563, 3334142150, 4204710138, 2195105922, 3480103887, 1349533776, 3951418603, 1963654773, 2324902538, 2380244109, 1277807180, 337383444, 1943478643, 3434410188, 164942601, 277503248, 3796963298, 0, 2585358234, 3759840736, 2408855183, 3871818470, 3972614892, 4258422525, 2877276587, 3634946264
)
return
map:new((
map:entry("0",$MDS_Matrix_1),
map:entry("1",$MDS_Matrix_2),
map:entry("2",$MDS_Matrix_3),
map:entry("3",$MDS_Matrix_4)
));
declare private function tf:MDS_Matrix($i as xs:string, $j as xs:unsignedInt) as xs:unsignedInt {
let $index as xs:unsignedInt := $j + 1
return map:get($MDS_Matrix_Map, $i)[$index]
};
declare private function tf:Build_MDS_Matrix_1() as xs:unsignedInt* {
for $i in 0 to 255
let $step := $MDS_Matrix_Builder/step[@index eq $i]
return
xdmp:or64(
xdmp:or64(
xdmp:or64(
xs:unsignedInt($step/m1[@id eq $P_00]),
xdmp:lshift64(xs:unsignedInt($step/mX[@id eq $P_00]), 8)
),
xdmp:lshift64(xs:unsignedInt($step/mY[@id eq $P_00]), 16)
),
xdmp:lshift64(xs:unsignedInt($step/mY[@id eq $P_00]), 24)
)
};
declare private function tf:Build_MDS_Matrix_2() as xs:unsignedInt* {
for $i in 0 to 255
let $step := $MDS_Matrix_Builder/step[@index eq $i]
return
xdmp:or64(
xdmp:or64(
xdmp:or64(
xs:unsignedInt($step/mY[@id eq $P_10]),
xdmp:lshift64(xs:unsignedInt($step/mY[@id eq $P_10]), 8)
),
xdmp:lshift64(xs:unsignedInt($step/mX[@id eq $P_10]), 16)
),
xdmp:lshift64(xs:unsignedInt($step/m1[@id eq $P_10]), 24)
)
};
declare private function tf:Build_MDS_Matrix_3() as xs:unsignedInt* {
for $i in 0 to 255
let $step := $MDS_Matrix_Builder/step[@index eq $i]
return
xdmp:or64(
xdmp:or64(
xdmp:or64(
xs:unsignedInt($step/mX[@id eq $P_20]),
xdmp:lshift64(xs:unsignedInt($step/mY[@id eq $P_20]), 8)
),
xdmp:lshift64(xs:unsignedInt($step/m1[@id eq $P_20]), 16)
),
xdmp:lshift64(xs:unsignedInt($step/mY[@id eq $P_20]), 24)
)
};
declare private function tf:Build_MDS_Matrix_4() as xs:unsignedInt* {
for $i in 0 to 255
let $step := $MDS_Matrix_Builder/step[@index eq $i]
return
xdmp:or64(
xdmp:or64(
xdmp:or64(
xs:unsignedInt($step/mX[@id eq $P_30]),
xdmp:lshift64(xs:unsignedInt($step/m1[@id eq $P_30]), 8)
),
xdmp:lshift64(xs:unsignedInt($step/mY[@id eq $P_30]), 16)
),
xdmp:lshift64(xs:unsignedInt($step/mX[@id eq $P_30]), 24)
)
};
declare private function tf:LFSR1($x as xs:unsignedInt) as xs:unsignedInt {
xdmp:xor64(
xdmp:rshift64($x, 1),
if (xdmp:and64($x, 1) ne 0) then $GF256_FDBK_2 else 0
)
};
declare private function tf:LFSR2($x as xs:unsignedInt) as xs:unsignedInt {
xdmp:xor64(
xdmp:xor64(
xdmp:rshift64($x, 2),
if (xdmp:and64($x, 2) ne 0) then $GF256_FDBK_2 else 0
),
if (xdmp:and64($x, 1) ne 0) then $GF256_FDBK_4 else 0
)
};
declare private function tf:Mx_1( $x as xs:unsignedInt ) as xs:unsignedInt { $x };
declare private function tf:Mx_X( $x as xs:unsignedInt ) as xs:unsignedInt { xdmp:xor64($x, tf:LFSR2($x)) }; (: 5B :)
declare private function tf:Mx_Y( $x as xs:unsignedInt ) as xs:unsignedInt { xdmp:xor64(xdmp:xor64($x, tf:LFSR1($x)), tf:LFSR2($x)) }; (: EF :)
(: Basic API methods
...........................................................................:)
(: compute the round decryption subkeys for PHT. these same subkeys will be used in encryption but will be applied in reverse order. :)
declare private function tf:computeSubKeys($i as xs:unsignedInt, $q as xs:unsignedInt, $count as xs:unsignedInt, $k64Cnt as xs:unsignedInt, $evenEntities as xs:unsignedInt*, $oddEntities as xs:unsignedInt*) as element(subKey)*{
let $A as xs:unsignedInt := tf:F32( $k64Cnt, $q, $evenEntities ) (: A uses even key entities :)
let $B as xs:unsignedInt := tf:F32( $k64Cnt, $q + $SK_BUMP, $oddEntities ) (: B uses odd key entities :)
let $B as xs:unsignedInt := xdmp:and64(xdmp:or64( xdmp:lshift64($B, 8), xdmp:rshift64($B,24) ), $INT_MASK)
let $C as xs:unsignedInt := xdmp:and64($A + $B, $INT_MASK)
let $D as xs:unsignedInt := xdmp:and64($C + $B, $INT_MASK)
return (
<subKey id="{ 2 * $i }">{ $C }</subKey>, (: combine with a PHT :)
<subKey id="{ 2 * $i + 1 }">{ xdmp:and64(xdmp:or64( xdmp:lshift64($D, $SK_ROTL), xdmp:rshift64($D,(32 - $SK_ROTL)) ), $INT_MASK) }</subKey>,
let $i := $i + 1
return
if ($i lt $count) then
tf:computeSubKeys(
$i, $q + $SK_STEP, $count, $k64Cnt,
$evenEntities, $oddEntities
)
else ()
)
};
(:~
* Expand a user-supplied key material into a session key.
*
* @param key The 64/128/192/256-bit user-key to use.
* @return This cipher's round keys.
* @exception InvalidKeyException If the key is invalid.
:)
declare private function tf:makeKey($key as xs:unsignedByte*) as element(sessionKey) {
let $errorCheck := if (fn:empty($key)) then fn:error(xs:QName("INVALID_KEY"), "Empty key") else ()
let $length as xs:unsignedInt := fn:count($key)
let $errorCheck :=
if (fn:not($length = 8 or $length = 16 or $length = 24 or $length = 32)) then
fn:error(xs:QName("INVALID_KEY"), "Invalid Length")
else ()
let $k64Cnt as xs:unsignedInt := fn:floor($length div 8)
let $subkeyCnt as xs:unsignedInt := $ROUND_SUBKEYS + 2 * $ROUNDS
(:
// split user key material into even and odd 32-bit entities and
// compute S-box keys using (12, 8) Reed-Solomon code over GF(256)
:)
let $buildEntitiesAndKeys := function($i as xs:unsignedInt, $j as xs:unsignedInt, $offset as xs:unsignedInt, $length as xs:unsignedInt, $this as xdmp:function) as element()* {
let $even :=
element even {
attribute index { $i },
xdmp:or64(
xdmp:or64(
xdmp:or64(
let $offset := $offset + 1
return $key[$offset],
let $offset := $offset + 2
return xdmp:lshift64($key[$offset], 8)
),
let $offset := $offset + 3
return xdmp:lshift64($key[$offset], 16)
),
let $offset := $offset + 4
return xdmp:lshift64($key[$offset], 24)
)
}
let $odd :=
element odd {
attribute index { $i },
xdmp:or64(
xdmp:or64(
xdmp:or64(
let $offset := $offset + 5
return $key[$offset],
let $offset := $offset + 6
return xdmp:lshift64($key[$offset], 8)
),
let $offset := $offset + 7
return xdmp:lshift64($key[$offset], 16)
),
let $offset := $offset + 8
return xdmp:lshift64($key[$offset], 24)
)
}
let $key :=
element sBoxKey {
attribute index { $j },
xdmp:and64(tf:RS_MDS_Encode( xs:unsignedInt($even), xs:unsignedInt($odd) ), $INT_MASK)
}
let $i := $i + 1
let $offset := $offset + 8
return (
$even, $odd, $key,
if ($i lt 4 and $offset lt $length) then
$this($i, $j - 1, $offset, $length, $this)
else ()
)
}
let $helper := function() { $buildEntitiesAndKeys(0, $k64Cnt - 1, 0, $length, $buildEntitiesAndKeys) }
let $keysAndEntities :=
element keysAndEntities {
$helper()
}
let $subKeys :=
element subKeys {
tf:computeSubKeys(
0, 0, fn:floor($subkeyCnt div 2), $k64Cnt,
for $e in $keysAndEntities/even order by $e/@index return xs:unsignedInt($e),
for $o in $keysAndEntities/odd order by $o/@index return xs:unsignedInt($o)
)
}
(:~
//
// fully expand the table for speed
//
:)
let $k0 as xs:unsignedInt :=
let $sBoxKey := $keysAndEntities/sBoxKey[@index eq "0"]
return if (fn:empty($sBoxKey)) then 0 else $sBoxKey
let $k1 as xs:unsignedInt :=
let $sBoxKey := $keysAndEntities/sBoxKey[@index eq "1"]
return if (fn:empty($sBoxKey)) then 0 else $sBoxKey
let $k2 as xs:unsignedInt :=
let $sBoxKey := $keysAndEntities/sBoxKey[@index eq "2"]
return if (fn:empty($sBoxKey)) then 0 else $sBoxKey
let $k3 as xs:unsignedInt :=
let $sBoxKey := $keysAndEntities/sBoxKey[@index eq "3"]
return if (fn:empty($sBoxKey)) then 0 else $sBoxKey
let $sBox :=
element sBox {
for $i in 0 to 255
let $b0 as xs:unsignedByte := $i
let $b1 as xs:unsignedByte := $i
let $b2 as xs:unsignedByte := $i
let $b3 as xs:unsignedByte := $i
let $case_1 := function($b0_in as xs:unsignedByte, $b1_in as xs:unsignedByte, $b2_in as xs:unsignedByte, $b3_in as xs:unsignedByte) as element(sPart)* {
element sPart {
attribute id { 2 * $i },
tf:MDS_Matrix("0",
xdmp:xor64(
tf:P($P_01, $b0_in),
tf:byte0($k0)
)
)
},
element sPart {
attribute id { 2 * $i + 1 },
tf:MDS_Matrix("1",
xdmp:xor64(
tf:P($P_11, $b1_in),
tf:byte1($k0)
)
)
},
element sPart {
attribute id { 512 + 2 * $i },
tf:MDS_Matrix("2",
xdmp:xor64(
tf:P($P_21, $b2_in),
tf:byte2($k0)
)
)
},
element sPart {
attribute id { 512 + 2 * $i + 1 },
tf:MDS_Matrix("3",
xdmp:xor64(
tf:P($P_31, $b3_in),
tf:byte3($k0)
)
)
}
}
let $case_2 := function($b0_in as xs:unsignedByte, $b1_in as xs:unsignedByte, $b2_in as xs:unsignedByte, $b3_in as xs:unsignedByte) as element(sPart)* {
element sPart {
attribute id { 2 * $i },
tf:MDS_Matrix("0",
xdmp:xor64(
tf:P($P_01,
xdmp:xor64(
tf:P($P_02, $b0_in),
tf:byte0($k1)
)
),
tf:byte0($k0)
)
)
},
element sPart {
attribute id { 2 * $i + 1 },
tf:MDS_Matrix("1",
xdmp:xor64(
tf:P($P_11,
xdmp:xor64(
tf:P($P_12, $b1_in),
tf:byte1($k1)
)
),
tf:byte1($k0)
)
)
},
element sPart {
attribute id { 512 + 2 * $i },
tf:MDS_Matrix("2",
xdmp:xor64(
tf:P($P_21,
xdmp:xor64(
tf:P($P_22, $b2_in),
tf:byte2($k1)
)
),
tf:byte2($k0)
)
)
},
element sPart {
attribute id { 512 + 2 * $i + 1 },
tf:MDS_Matrix("3",
xdmp:xor64(
tf:P($P_31,
xdmp:xor64(
tf:P($P_32, $b3_in),
tf:byte3($k1)
)
),
tf:byte3($k0)
)
)
}
}
let $case_3 := function($b0_in as xs:unsignedByte, $b1_in as xs:unsignedByte, $b2_in as xs:unsignedByte, $b3_in as xs:unsignedByte) as element(sPart)* {
let $b0_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_03, $b0_in),
tf:byte0($k2)
)
let $b1_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_13, $b1_in),
tf:byte1($k2)
)
let $b2_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_23, $b2_in),
tf:byte2($k2)
)
let $b3_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_33, $b3_in),
tf:byte3($k2)
)
return $case_2($b0_local, $b1_local, $b2_local, $b3_local)
}
let $case_0 := function($b0_in as xs:unsignedByte, $b1_in as xs:unsignedByte, $b2_in as xs:unsignedByte, $b3_in as xs:unsignedByte) as element(sPart)* {
let $b0_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_04, $b0_in),
tf:byte0($k3)
)
let $b1_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_14, $b1_in),
tf:byte1($k3)
)
let $b2_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_24, $b2_in),
tf:byte2($k3)
)
let $b3_local as xs:unsignedByte :=
xdmp:xor64(
tf:P($P_34, $b3_in),
tf:byte3($k3)
)
return $case_3($b0_local, $b1_local, $b2_local, $b3_local)
}
return
switch (xdmp:and64($k64Cnt, 3))
case 1 return $case_1($b0, $b1, $b2, $b3)
case 0 return $case_0($b0, $b1, $b2, $b3)
case 3 return $case_3($b0, $b1, $b2, $b3)
case 2 return $case_2($b0, $b1, $b2, $b3)
default return fn:error("TwoFish:OutOfCase")
}
return element sessionKey {
$sBox,
$subKeys
}
};
declare private function tf:lshift32($n, $shift) {
xdmp:and64( xdmp:lshift64($n, $shift), $INT_MASK )
};
declare private function tf:rshift32($n, $shift) {
xdmp:and64( xdmp:rshift64($n, $shift), $INT_MASK )
};
declare private function tf:executeEncryptRound($x0_in as xs:unsignedInt, $x1_in as xs:unsignedInt, $x2_in as xs:unsignedInt, $x3_in as xs:unsignedInt, $currentRound as xs:unsignedInt, $sBoxSequence as xs:unsignedInt*, $sKey as element(subKey)*, $k) as xs:unsignedInt* {
if ($currentRound lt $ROUNDS) then
let $temp0 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x0_in, 0 )
let $temp1 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x1_in, 3 )
let $x2_local as xs:unsignedInt := xdmp:xor64($x2_in, xdmp:and64( xs:unsignedLong($temp0 + $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK ))
let $x2_local as xs:unsignedInt := xdmp:or64( tf:rshift32($x2_local, 1), tf:lshift32($x2_local, 31) )
let $x3_local as xs:unsignedInt := xdmp:or64( tf:lshift32($x3_in, 1), tf:rshift32($x3_in, 31) )
let $k as xs:unsignedInt := $k + 1
let $x3_local as xs:unsignedInt := xdmp:xor64($x3_local, xdmp:and64( xs:unsignedLong($temp0 + 2 * $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK ))
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("CT", $currentRound,"=",tf:intToHexString($x0_in),tf:intToHexString($x1_in),tf:intToHexString($x2_local),tf:intToHexString($x3_local)))
else ()
let $temp0 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x2_local, 0 )
let $temp1 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x3_local, 3 )
let $k as xs:unsignedInt := $k + 1
let $x0_local as xs:unsignedInt := xdmp:xor64($x0_in, xdmp:and64( xs:unsignedLong($temp0 + $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK ))
let $x0_local as xs:unsignedInt := xdmp:or64( tf:rshift32($x0_local, 1), tf:lshift32($x0_local, 31) )
let $x1_local as xs:unsignedInt := xdmp:or64( tf:lshift32($x1_in, 1), tf:rshift32($x1_in, 31) )
let $k as xs:unsignedInt := $k + 1
let $x1_local as xs:unsignedInt := xdmp:xor64($x1_local, xdmp:and64( xs:unsignedLong($temp0 + 2 * $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK ))
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("CT",$currentRound + 1,"=",tf:intToHexString($x0_local),tf:intToHexString($x1_local),tf:intToHexString($x2_local),tf:intToHexString($x3_local)))
else ()
return
tf:executeEncryptRound(
$x0_local, $x1_local, $x2_local, $x3_local,
$currentRound + 2, $sBoxSequence, $sKey, $k + 1
)
else ($x0_in, $x1_in, $x2_in, $x3_in)
};
(: /**
* Encrypt exactly one block of plaintext.
*
* @param in The plaintext.
* @param inOffset Index of in from which to start considering data.
* @param sessionKey The session key to use for encryption.
* @return The ciphertext generated from a plaintext using the session key.
*/ byte[] :)
declare private function tf:blockEncrypt($in as xs:unsignedByte*, $sessionKey as element(sessionKey)) as xs:unsignedInt* {
let $sBoxSequence as xs:unsignedInt* :=
for $sPart in $sessionKey/sBox/sPart
order by xs:unsignedInt($sPart/@id)
return xs:unsignedInt($sPart)
let $sKey as element(subKey)* := $sessionKey/subKeys/subKey
let $x0 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[1],
xdmp:lshift64( $in[2], 8 )
),
xdmp:lshift64( $in[3], 16 )
),
xdmp:lshift64( $in[4], 24 )
)
let $x1 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[5],
xdmp:lshift64( $in[6], 8 )
),
xdmp:lshift64( $in[7], 16 )
),
xdmp:lshift64( $in[8], 24 )
)
let $x2 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[9],
xdmp:lshift64( $in[10], 8 )
),
xdmp:lshift64( $in[11], 16 )
),
xdmp:lshift64( $in[12], 24 )
)
let $x3 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[13],
xdmp:lshift64( $in[14], 8 )
),
xdmp:lshift64( $in[15], 16 )
),
xdmp:lshift64( $in[16], 24 )
)
let $log :=
if ($DEBUG) then
xdmp:log(
fn:concat("PT=",
fn:string-join(
for $n in $in
let $hex := fn:string(xdmp:integer-to-hex($n))
return
fn:concat(
if (fn:string-length($hex) < 2) then "0" else "",
fn:upper-case($hex)
)
, ""
)
)
)
else ()
let $index as xs:unsignedInt := $INPUT_WHITEN
let $x0 as xs:unsignedInt := xdmp:xor64($x0, xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $INPUT_WHITEN + 1
let $x1 as xs:unsignedInt := xdmp:xor64($x1, xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $INPUT_WHITEN + 2
let $x2 as xs:unsignedInt := xdmp:xor64($x2, xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $INPUT_WHITEN + 3
let $x3 as xs:unsignedInt := xdmp:xor64($x3, xs:unsignedInt($sKey[@id eq $index]))
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("PTw=",tf:intToHexString($x0),tf:intToHexString($x1),tf:intToHexString($x2),tf:intToHexString($x3)))
else ()
let $xSeq as xs:unsignedInt* := tf:executeEncryptRound($x0, $x1, $x2, $x3, 0, $sBoxSequence, $sKey, $ROUND_SUBKEYS)
let $index as xs:unsignedInt := $OUTPUT_WHITEN
let $x2 as xs:unsignedInt := xdmp:xor64($xSeq[3], xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $OUTPUT_WHITEN + 1
let $x3 as xs:unsignedInt := xdmp:xor64($xSeq[4], xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $OUTPUT_WHITEN + 2
let $x0 as xs:unsignedInt := xdmp:xor64($xSeq[1], xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $OUTPUT_WHITEN + 3
let $x1 as xs:unsignedInt := xdmp:xor64($xSeq[2], xs:unsignedInt($sKey[@id eq $index]))
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("CTw=",tf:intToHexString($x0),tf:intToHexString($x1),tf:intToHexString($x2),tf:intToHexString($x3)))
else ()
let $result := (
tf:byte0($x2),tf:byte1($x2),tf:byte2($x2),tf:byte3($x2),
tf:byte0($x3),tf:byte1($x3),tf:byte2($x3),tf:byte3($x3),
tf:byte0($x0),tf:byte1($x0),tf:byte2($x0),tf:byte3($x0),
tf:byte0($x1),tf:byte1($x1),tf:byte2($x1),tf:byte3($x1)
)
let $log :=
if ($DEBUG) then
xdmp:log(
fn:concat(
"CT=",
fn:string-join(
for $n in $result
let $hex := fn:string(xdmp:integer-to-hex($n))
return
fn:concat(
if (fn:string-length($hex) < 2) then "0" else "",
fn:upper-case($hex)
)
, ""
)
)
)
else ()
return $result
};
declare private function tf:executeDecryptRound($x0_in as xs:unsignedInt, $x1_in as xs:unsignedInt, $x2_in as xs:unsignedInt, $x3_in as xs:unsignedInt, $currentRound as xs:unsignedInt, $sBoxSequence as xs:unsignedInt*, $sKey as element(subKey)*, $k as xs:unsignedInt) as xs:unsignedInt* {
if ($currentRound lt $ROUNDS) then
let $temp0 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x2_in, 0 )
let $temp1 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x3_in, 3 )
let $x1_local as xs:unsignedInt := xdmp:xor64( $x1_in, xdmp:and64(xs:unsignedLong($temp0 + 2 * $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK) )
let $x1_local as xs:unsignedInt := xdmp:or64( tf:rshift32($x1_local, 1), tf:lshift32($x1_local, 31) )
let $x0_local as xs:unsignedInt := xdmp:or64( tf:lshift32($x0_in, 1), tf:rshift32($x0_in, 31) )
let $k as xs:unsignedInt := $k - 1
let $x0_local as xs:unsignedInt := xdmp:xor64( $x0_local, xdmp:and64(xs:unsignedLong($temp0 + $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK) )
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("PT", $ROUNDS - $currentRound,"=",tf:intToHexString($x2_in),tf:intToHexString($x3_in),tf:intToHexString($x0_local),tf:intToHexString($x1_local)))
else ()
let $temp0 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x0_local, 0 )
let $temp1 as xs:unsignedInt := tf:Fe32( $sBoxSequence, $x1_local, 3 )
let $k as xs:unsignedInt := $k - 1
let $x3_local as xs:unsignedInt := xdmp:xor64( $x3_in, xdmp:and64(xs:unsignedLong($temp0 + 2 * $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK) )
let $x3_local as xs:unsignedInt := xdmp:or64( tf:rshift32($x3_local, 1), tf:lshift32($x3_local, 31) )
let $x2_local as xs:unsignedInt := xdmp:or64( tf:lshift32($x2_in, 1), tf:rshift32($x2_in, 31) )
let $k as xs:unsignedInt := $k - 1
let $x2_local as xs:unsignedInt := xdmp:xor64( $x2_local, xdmp:and64(xs:unsignedLong($temp0 + $temp1 + xs:unsignedInt($sKey[@id eq $k])), $INT_MASK) )
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("PT", $ROUNDS - $currentRound + 1,"=",tf:intToHexString($x2_local),tf:intToHexString($x3_local),tf:intToHexString($x0_local),tf:intToHexString($x1_local)))
else ()
return
tf:executeDecryptRound(
$x0_local, $x1_local, $x2_local, $x3_local,
$currentRound + 2, $sBoxSequence, $sKey, $k - 1
)
else ( $x0_in, $x1_in, $x2_in, $x3_in )
};
(:
/**
* Decrypt exactly one block of ciphertext.
*
* @param in The ciphertext.
* @param inOffset Index of in from which to start considering data.
* @param sessionKey The session key to use for decryption.
* @return The plaintext generated from a ciphertext using the session key.
*/
:)
declare private function tf:blockDecrypt($in as xs:unsignedByte*, $sessionKey as element(sessionKey)) as xs:unsignedInt* {
let $sBoxSequence as xs:unsignedInt* :=
for $sPart in $sessionKey/sBox/sPart
order by xs:unsignedInt($sPart/@id)
return xs:unsignedInt($sPart)
let $sKey as element(subKey)* := $sessionKey/subKeys/subKey
let $x2 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[1],
xdmp:lshift64( $in[2], 8 )
),
xdmp:lshift64( $in[3], 16 )
),
xdmp:lshift64( $in[4], 24 )
)
let $x3 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[5],
xdmp:lshift64( $in[6], 8 )
),
xdmp:lshift64( $in[7], 16 )
),
xdmp:lshift64( $in[8], 24 )
)
let $x0 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[9],
xdmp:lshift64( $in[10], 8 )
),
xdmp:lshift64( $in[11], 16 )
),
xdmp:lshift64( $in[12], 24 )
)
let $x1 as xs:unsignedInt :=
xdmp:or64(
xdmp:or64(
xdmp:or64(
$in[13],
xdmp:lshift64( $in[14], 8 )
),
xdmp:lshift64( $in[15], 16 )
),
xdmp:lshift64( $in[16], 24 )
)
let $log :=
if ($DEBUG) then
xdmp:log(
fn:concat("CT=",
fn:string-join(
for $n in $in
let $hex := fn:string(xdmp:integer-to-hex($n))
return
fn:concat(
if (fn:string-length($hex) < 2) then "0" else "",
fn:upper-case($hex)
)
, ""
)
)
)
else ()
let $index as xs:unsignedInt := $OUTPUT_WHITEN
let $x2 as xs:unsignedInt := xdmp:xor64( $x2, xs:unsignedInt($sKey[@id eq $index]) )
let $index as xs:unsignedInt := $OUTPUT_WHITEN + 1
let $x3 as xs:unsignedInt := xdmp:xor64( $x3, xs:unsignedInt($sKey[@id eq $index]) )
let $index as xs:unsignedInt := $OUTPUT_WHITEN + 2
let $x0 as xs:unsignedInt := xdmp:xor64( $x0, xs:unsignedInt($sKey[@id eq $index]) )
let $index as xs:unsignedInt := $OUTPUT_WHITEN + 3
let $x1 as xs:unsignedInt := xdmp:xor64( $x1, xs:unsignedInt($sKey[@id eq $index]) )
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("CTw=",tf:intToHexString($x2),tf:intToHexString($x3),tf:intToHexString($x0),tf:intToHexString($x1)))
else ()
let $xSeq as xs:unsignedInt* := tf:executeDecryptRound($x0, $x1, $x2, $x3, 0, $sBoxSequence, $sKey, $ROUND_SUBKEYS + 2 * $ROUNDS - 1)
let $index as xs:unsignedInt := $INPUT_WHITEN
let $x0 as xs:unsignedInt := xdmp:xor64( $xSeq[1], xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $INPUT_WHITEN + 1
let $x1 as xs:unsignedInt := xdmp:xor64( $xSeq[2], xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $INPUT_WHITEN + 2
let $x2 as xs:unsignedInt := xdmp:xor64( $xSeq[3], xs:unsignedInt($sKey[@id eq $index]))
let $index as xs:unsignedInt := $INPUT_WHITEN + 3
let $x3 as xs:unsignedInt := xdmp:xor64( $xSeq[4], xs:unsignedInt($sKey[@id eq $index]))
let $log :=
if ($DEBUG) then
xdmp:log(fn:concat("PTw=",tf:intToHexString($x0),tf:intToHexString($x1),tf:intToHexString($x2),tf:intToHexString($x3)))
else ()
let $result := (
tf:byte0($x0), tf:byte1($x0), tf:byte2($x0), tf:byte3($x0),
tf:byte0($x1), tf:byte1($x1), tf:byte2($x1), tf:byte3($x1),
tf:byte0($x2), tf:byte1($x2), tf:byte2($x2), tf:byte3($x2),
tf:byte0($x3), tf:byte1($x3), tf:byte2($x3), tf:byte3($x3)
)
let $log :=
if ($DEBUG) then
xdmp:log(
fn:concat(
"PT=",
fn:string-join(
for $n in $result
let $hex := fn:string(xdmp:integer-to-hex($n))
return
fn:concat(
if (fn:string-length($hex) < 2) then "0" else "",
fn:upper-case($hex)
)
, ""
)
)
)
else ()
return $result
};
(:
/ own methods
//...........................................................................
:)
declare private function tf:byte0($x as xs:unsignedInt) as xs:unsignedInt { xdmp:and64($x,$BYTE_MASK) };
declare private function tf:byte1($x as xs:unsignedInt) as xs:unsignedInt { xdmp:and64( xdmp:rshift64($x,8), $BYTE_MASK ) };
declare private function tf:byte2($x as xs:unsignedInt) as xs:unsignedInt { xdmp:and64( xdmp:rshift64($x,16), $BYTE_MASK ) };
declare private function tf:byte3($x as xs:unsignedInt) as xs:unsignedInt { xdmp:and64( xdmp:rshift64($x,24), $BYTE_MASK ) };
(:
/**
* Use (12, 8) Reed-Solomon code over GF(256) to produce a key S-box
* 32-bit entity from two key material 32-bit entities.
*
* @param k0 1st 32-bit entity.