cyfs-raptorq 1.6.1

RaptorQ (RFC6330)
Documentation
// As defined in section 5.5.1
#[rustfmt::skip]
#[allow(clippy::unreadable_literal)]
const V0: [u32; 256] = [
    251291136, 3952231631, 3370958628, 4070167936, 123631495,
    3351110283, 3218676425, 2011642291, 774603218, 2402805061,
    1004366930, 1843948209, 428891132, 3746331984, 1591258008,
    3067016507, 1433388735, 504005498, 2032657933, 3419319784,
    2805686246, 3102436986, 3808671154, 2501582075, 3978944421,
    246043949, 4016898363, 649743608, 1974987508, 2651273766,
    2357956801, 689605112, 715807172, 2722736134, 191939188,
    3535520147, 3277019569, 1470435941, 3763101702, 3232409631,
    122701163, 3920852693, 782246947, 372121310, 2995604341,
    2045698575, 2332962102, 4005368743, 218596347, 3415381967,
    4207612806, 861117671, 3676575285, 2581671944, 3312220480,
    681232419, 307306866, 4112503940, 1158111502, 709227802,
    2724140433, 4201101115, 4215970289, 4048876515, 3031661061,
    1909085522, 510985033, 1361682810, 129243379, 3142379587,
    2569842483, 3033268270, 1658118006, 932109358, 1982290045,
    2983082771, 3007670818, 3448104768, 683749698, 778296777,
    1399125101, 1939403708, 1692176003, 3868299200, 1422476658,
    593093658, 1878973865, 2526292949, 1591602827, 3986158854,
    3964389521, 2695031039, 1942050155, 424618399, 1347204291,
    2669179716, 2434425874, 2540801947, 1384069776, 4123580443,
    1523670218, 2708475297, 1046771089, 2229796016, 1255426612,
    4213663089, 1521339547, 3041843489, 420130494, 10677091,
    515623176, 3457502702, 2115821274, 2720124766, 3242576090,
    854310108, 425973987, 325832382, 1796851292, 2462744411,
    1976681690, 1408671665, 1228817808, 3917210003, 263976645,
    2593736473, 2471651269, 4291353919, 650792940, 1191583883,
    3046561335, 2466530435, 2545983082, 969168436, 2019348792,
    2268075521, 1169345068, 3250240009, 3963499681, 2560755113,
    911182396, 760842409, 3569308693, 2687243553, 381854665,
    2613828404, 2761078866, 1456668111, 883760091, 3294951678,
    1604598575, 1985308198, 1014570543, 2724959607, 3062518035,
    3115293053, 138853680, 4160398285, 3322241130, 2068983570,
    2247491078, 3669524410, 1575146607, 828029864, 3732001371,
    3422026452, 3370954177, 4006626915, 543812220, 1243116171,
    3928372514, 2791443445, 4081325272, 2280435605, 885616073,
    616452097, 3188863436, 2780382310, 2340014831, 1208439576,
    258356309, 3837963200, 2075009450, 3214181212, 3303882142,
    880813252, 1355575717, 207231484, 2420803184, 358923368,
    1617557768, 3272161958, 1771154147, 2842106362, 1751209208,
    1421030790, 658316681, 194065839, 3241510581, 38625260,
    301875395, 4176141739, 297312930, 2137802113, 1502984205,
    3669376622, 3728477036, 234652930, 2213589897, 2734638932,
    1129721478, 3187422815, 2859178611, 3284308411, 3819792700,
    3557526733, 451874476, 1740576081, 3592838701, 1709429513,
    3702918379, 3533351328, 1641660745, 179350258, 2380520112,
    3936163904, 3685256204, 3156252216, 1854258901, 2861641019,
    3176611298, 834787554, 331353807, 517858103, 3010168884,
    4012642001, 2217188075, 3756943137, 3077882590, 2054995199,
    3081443129, 3895398812, 1141097543, 2376261053, 2626898255,
    2554703076, 401233789, 1460049922, 678083952, 1064990737,
    940909784, 1673396780, 528881783, 1712547446, 3629685652,
    1358307511];

// As defined in section 5.5.2
#[rustfmt::skip]
#[allow(clippy::unreadable_literal)]
const V1: [u32; 256] = [
    807385413, 2043073223, 3336749796, 1302105833, 2278607931,
    541015020, 1684564270, 372709334, 3508252125, 1768346005,
    1270451292, 2603029534, 2049387273, 3891424859, 2152948345,
    4114760273, 915180310, 3754787998, 700503826, 2131559305,
    1308908630, 224437350, 4065424007, 3638665944, 1679385496,
    3431345226, 1779595665, 3068494238, 1424062773, 1033448464,
    4050396853, 3302235057, 420600373, 2868446243, 311689386,
    259047959, 4057180909, 1575367248, 4151214153, 110249784,
    3006865921, 4293710613, 3501256572, 998007483, 499288295,
    1205710710, 2997199489, 640417429, 3044194711, 486690751,
    2686640734, 2394526209, 2521660077, 49993987, 3843885867,
    4201106668, 415906198, 19296841, 2402488407, 2137119134,
    1744097284, 579965637, 2037662632, 852173610, 2681403713,
    1047144830, 2982173936, 910285038, 4187576520, 2589870048,
    989448887, 3292758024, 506322719, 176010738, 1865471968,
    2619324712, 564829442, 1996870325, 339697593, 4071072948,
    3618966336, 2111320126, 1093955153, 957978696, 892010560,
    1854601078, 1873407527, 2498544695, 2694156259, 1927339682,
    1650555729, 183933047, 3061444337, 2067387204, 228962564,
    3904109414, 1595995433, 1780701372, 2463145963, 307281463,
    3237929991, 3852995239, 2398693510, 3754138664, 522074127,
    146352474, 4104915256, 3029415884, 3545667983, 332038910,
    976628269, 3123492423, 3041418372, 2258059298, 2139377204,
    3243642973, 3226247917, 3674004636, 2698992189, 3453843574,
    1963216666, 3509855005, 2358481858, 747331248, 1957348676,
    1097574450, 2435697214, 3870972145, 1888833893, 2914085525,
    4161315584, 1273113343, 3269644828, 3681293816, 412536684,
    1156034077, 3823026442, 1066971017, 3598330293, 1979273937,
    2079029895, 1195045909, 1071986421, 2712821515, 3377754595,
    2184151095, 750918864, 2585729879, 4249895712, 1832579367,
    1192240192, 946734366, 31230688, 3174399083, 3549375728,
    1642430184, 1904857554, 861877404, 3277825584, 4267074718,
    3122860549, 666423581, 644189126, 226475395, 307789415,
    1196105631, 3191691839, 782852669, 1608507813, 1847685900,
    4069766876, 3931548641, 2526471011, 766865139, 2115084288,
    4259411376, 3323683436, 568512177, 3736601419, 1800276898,
    4012458395, 1823982, 27980198, 2023839966, 869505096,
    431161506, 1024804023, 1853869307, 3393537983, 1500703614,
    3019471560, 1351086955, 3096933631, 3034634988, 2544598006,
    1230942551, 3362230798, 159984793, 491590373, 3993872886,
    3681855622, 903593547, 3535062472, 1799803217, 772984149,
    895863112, 1899036275, 4187322100, 101856048, 234650315,
    3183125617, 3190039692, 525584357, 1286834489, 455810374,
    1869181575, 922673938, 3877430102, 3422391938, 1414347295,
    1971054608, 3061798054, 830555096, 2822905141, 167033190,
    1079139428, 4210126723, 3593797804, 429192890, 372093950,
    1779187770, 3312189287, 204349348, 452421568, 2800540462,
    3733109044, 1235082423, 1765319556, 3174729780, 3762994475,
    3171962488, 442160826, 198349622, 45942637, 1324086311,
    2901868599, 678860040, 3812229107, 19936821, 1119590141,
    3640121682, 3545931032, 2102949142, 2828208598, 3603378023,
    4135048896];

// As defined in section 5.5.3
#[rustfmt::skip]
#[allow(clippy::unreadable_literal)]
const V2: [u32; 256] = [
    1629829892, 282540176, 2794583710, 496504798, 2990494426,
    3070701851, 2575963183, 4094823972, 2775723650, 4079480416,
    176028725, 2246241423, 3732217647, 2196843075, 1306949278,
    4170992780, 4039345809, 3209664269, 3387499533, 293063229,
    3660290503, 2648440860, 2531406539, 3537879412, 773374739,
    4184691853, 1804207821, 3347126643, 3479377103, 3970515774,
    1891731298, 2368003842, 3537588307, 2969158410, 4230745262,
    831906319, 2935838131, 264029468, 120852739, 3200326460,
    355445271, 2296305141, 1566296040, 1760127056, 20073893,
    3427103620, 2866979760, 2359075957, 2025314291, 1725696734,
    3346087406, 2690756527, 99815156, 4248519977, 2253762642,
    3274144518, 598024568, 3299672435, 556579346, 4121041856,
    2896948975, 3620123492, 918453629, 3249461198, 2231414958,
    3803272287, 3657597946, 2588911389, 242262274, 1725007475,
    2026427718, 46776484, 2873281403, 2919275846, 3177933051,
    1918859160, 2517854537, 1857818511, 3234262050, 479353687,
    200201308, 2801945841, 1621715769, 483977159, 423502325,
    3689396064, 1850168397, 3359959416, 3459831930, 841488699,
    3570506095, 930267420, 1564520841, 2505122797, 593824107,
    1116572080, 819179184, 3139123629, 1414339336, 1076360795,
    512403845, 177759256, 1701060666, 2239736419, 515179302,
    2935012727, 3821357612, 1376520851, 2700745271, 966853647,
    1041862223, 715860553, 171592961, 1607044257, 1227236688,
    3647136358, 1417559141, 4087067551, 2241705880, 4194136288,
    1439041934, 20464430, 119668151, 2021257232, 2551262694,
    1381539058, 4082839035, 498179069, 311508499, 3580908637,
    2889149671, 142719814, 1232184754, 3356662582, 2973775623,
    1469897084, 1728205304, 1415793613, 50111003, 3133413359,
    4074115275, 2710540611, 2700083070, 2457757663, 2612845330,
    3775943755, 2469309260, 2560142753, 3020996369, 1691667711,
    4219602776, 1687672168, 1017921622, 2307642321, 368711460,
    3282925988, 213208029, 4150757489, 3443211944, 2846101972,
    4106826684, 4272438675, 2199416468, 3710621281, 497564971,
    285138276, 765042313, 916220877, 3402623607, 2768784621,
    1722849097, 3386397442, 487920061, 3569027007, 3424544196,
    217781973, 2356938519, 3252429414, 145109750, 2692588106,
    2454747135, 1299493354, 4120241887, 2088917094, 932304329,
    1442609203, 952586974, 3509186750, 753369054, 854421006,
    1954046388, 2708927882, 4047539230, 3048925996, 1667505809,
    805166441, 1182069088, 4265546268, 4215029527, 3374748959,
    373532666, 2454243090, 2371530493, 3651087521, 2619878153,
    1651809518, 1553646893, 1227452842, 703887512, 3696674163,
    2552507603, 2635912901, 895130484, 3287782244, 3098973502,
    990078774, 3780326506, 2290845203, 41729428, 1949580860,
    2283959805, 1036946170, 1694887523, 4880696, 466000198,
    2765355283, 3318686998, 1266458025, 3919578154, 3545413527,
    2627009988, 3744680394, 1696890173, 3250684705, 4142417708,
    915739411, 3308488877, 1289361460, 2942552331, 1169105979,
    3342228712, 698560958, 1356041230, 2401944293, 107705232,
    3701895363, 903928723, 3646581385, 844950914, 1944371367,
    3863894844, 2946773319, 1972431613, 1706989237, 29917467,
    3497665928];

// As defined in section 5.5.4
#[rustfmt::skip]
#[allow(clippy::unreadable_literal)]
const V3: [u32; 256] = [
    1191369816, 744902811, 2539772235, 3213192037, 3286061266,
    1200571165, 2463281260, 754888894, 714651270, 1968220972,
    3628497775, 1277626456, 1493398934, 364289757, 2055487592,
    3913468088, 2930259465, 902504567, 3967050355, 2056499403,
    692132390, 186386657, 832834706, 859795816, 1283120926,
    2253183716, 3003475205, 1755803552, 2239315142, 4271056352,
    2184848469, 769228092, 1249230754, 1193269205, 2660094102,
    642979613, 1687087994, 2726106182, 446402913, 4122186606,
    3771347282, 37667136, 192775425, 3578702187, 1952659096,
    3989584400, 3069013882, 2900516158, 4045316336, 3057163251,
    1702104819, 4116613420, 3575472384, 2674023117, 1409126723,
    3215095429, 1430726429, 2544497368, 1029565676, 1855801827,
    4262184627, 1854326881, 2906728593, 3277836557, 2787697002,
    2787333385, 3105430738, 2477073192, 748038573, 1088396515,
    1611204853, 201964005, 3745818380, 3654683549, 3816120877,
    3915783622, 2563198722, 1181149055, 33158084, 3723047845,
    3790270906, 3832415204, 2959617497, 372900708, 1286738499,
    1932439099, 3677748309, 2454711182, 2757856469, 2134027055,
    2780052465, 3190347618, 3758510138, 3626329451, 1120743107,
    1623585693, 1389834102, 2719230375, 3038609003, 462617590,
    260254189, 3706349764, 2556762744, 2874272296, 2502399286,
    4216263978, 2683431180, 2168560535, 3561507175, 668095726,
    680412330, 3726693946, 4180630637, 3335170953, 942140968,
    2711851085, 2059233412, 4265696278, 3204373534, 232855056,
    881788313, 2258252172, 2043595984, 3758795150, 3615341325,
    2138837681, 1351208537, 2923692473, 3402482785, 2105383425,
    2346772751, 499245323, 3417846006, 2366116814, 2543090583,
    1828551634, 3148696244, 3853884867, 1364737681, 2200687771,
    2689775688, 232720625, 4071657318, 2671968983, 3531415031,
    1212852141, 867923311, 3740109711, 1923146533, 3237071777,
    3100729255, 3247856816, 906742566, 4047640575, 4007211572,
    3495700105, 1171285262, 2835682655, 1634301229, 3115169925,
    2289874706, 2252450179, 944880097, 371933491, 1649074501,
    2208617414, 2524305981, 2496569844, 2667037160, 1257550794,
    3399219045, 3194894295, 1643249887, 342911473, 891025733,
    3146861835, 3789181526, 938847812, 1854580183, 2112653794,
    2960702988, 1238603378, 2205280635, 1666784014, 2520274614,
    3355493726, 2310872278, 3153920489, 2745882591, 1200203158,
    3033612415, 2311650167, 1048129133, 4206710184, 4209176741,
    2640950279, 2096382177, 4116899089, 3631017851, 4104488173,
    1857650503, 3801102932, 445806934, 3055654640, 897898279,
    3234007399, 1325494930, 2982247189, 1619020475, 2720040856,
    885096170, 3485255499, 2983202469, 3891011124, 546522756,
    1524439205, 2644317889, 2170076800, 2969618716, 961183518,
    1081831074, 1037015347, 3289016286, 2331748669, 620887395,
    303042654, 3990027945, 1562756376, 3413341792, 2059647769,
    2823844432, 674595301, 2457639984, 4076754716, 2447737904,
    1583323324, 625627134, 3076006391, 345777990, 1684954145,
    879227329, 3436182180, 1522273219, 3802543817, 1456017040,
    1897819847, 2970081129, 1382576028, 3820044861, 1044428167,
    612252599, 3340478395, 2150613904, 3397625662, 3573635640,
    3432275192];

// As defined in section 5.3.5.1
pub fn rand<TI>(y: u32, i: TI, m: u32) -> u32
where
    TI: Into<u32>,
{
    assert!(m > 0);
    let i = i.into();
    let x0 = (y + i) % 256;
    let x1 = ((y >> 8) + i) % 256;
    let x2 = ((y >> 16) + i) % 256;
    let x3 = ((y >> 24) + i) % 256;

    (V0[x0 as usize] ^ V1[x1 as usize] ^ V2[x2 as usize] ^ V3[x3 as usize]) % m
}