BCrypt
using System;
using System.Security.Cryptography;
using System.Text;
namespace BCrypt.Net
{
public sealed class BCrypt
{
private const int GensaltDefaultLog2Rounds = 10;
private const int BcryptSaltLen = 16;
private const int BlowfishNumRounds = 16;
private static readonly uint[] POrig = new uint[18] {
608135816,
2242054355,
320440878,
57701188,
2752067618,
698298832,
137296536,
3964562569,
1160258022,
953160567,
3193202383,
887688300,
3232508343,
3380367581,
1065670069,
3041331479,
2450970073,
2306472731
};
private static readonly uint[] SOrig = new uint[1024] {
3509652390,
2564797868,
805139163,
3491422135,
3101798381,
1780907670,
3128725573,
4046225305,
614570311,
3012652279,
134345442,
2240740374,
1667834072,
1901547113,
2757295779,
4103290238,
227898511,
1921955416,
1904987480,
2182433518,
2069144605,
3260701109,
2620446009,
720527379,
3318853667,
677414384,
3393288472,
3101374703,
2390351024,
1614419982,
1822297739,
2954791486,
3608508353,
3174124327,
2024746970,
1432378464,
3864339955,
2857741204,
1464375394,
1676153920,
1439316330,
715854006,
3033291828,
289532110,
2706671279,
2087905683,
3018724369,
1668267050,
732546397,
1947742710,
3462151702,
2609353502,
2950085171,
1814351708,
2050118529,
680887927,
999245976,
1800124847,
3300911131,
1713906067,
1641548236,
4213287313,
1216130144,
1575780402,
4018429277,
3917837745,
3693486850,
3949271944,
596196993,
3549867205,
258830323,
2213823033,
772490370,
2760122372,
1774776394,
2652871518,
566650946,
4142492826,
1728879713,
2882767088,
1783734482,
3629395816,
2517608232,
2874225571,
1861159788,
326777828,
3124490320,
2130389656,
2716951837,
967770486,
1724537150,
2185432712,
2364442137,
1164943284,
2105845187,
998989502,
3765401048,
2244026483,
1075463327,
1455516326,
1322494562,
910128902,
469688178,
1117454909,
936433444,
3490320968,
3675253459,
1240580251,
122909385,
2157517691,
634681816,
4142456567,
3825094682,
3061402683,
2540495037,
79693498,
3249098678,
1084186820,
1583128258,
426386531,
1761308591,
1047286709,
322548459,
995290223,
1845252383,
2603652396,
3431023940,
2942221577,
3202600964,
3727903485,
1712269319,
422464435,
3234572375,
1170764815,
3523960633,
3117677531,
1434042557,
442511882,
3600875718,
1076654713,
1738483198,
4213154764,
2393238008,
3677496056,
1014306527,
4251020053,
793779912,
2902807211,
842905082,
4246964064,
1395751752,
1040244610,
2656851899,
3396308128,
445077038,
3742853595,
3577915638,
679411651,
2892444358,
2354009459,
1767581616,
3150600392,
3791627101,
3102740896,
284835224,
4246832056,
1258075500,
768725851,
2589189241,
3069724005,
3532540348,
1274779536,
3789419226,
2764799539,
1660621633,
3471099624,
4011903706,
913787905,
3497959166,
737222580,
2514213453,
2928710040,
3937242737,
1804850592,
3499020752,
2949064160,
2386320175,
2390070455,
2415321851,
4061277028,
2290661394,
2416832540,
1336762016,
1754252060,
3520065937,
3014181293,
791618072,
3188594551,
3933548030,
2332172193,
3852520463,
3043980520,
413987798,
3465142937,
3030929376,
4245938359,
2093235073,
3534596313,
375366246,
2157278981,
2479649556,
555357303,
3870105701,
2008414854,
3344188149,
4221384143,
3956125452,
2067696032,
3594591187,
2921233993,
2428461,
544322398,
577241275,
1471733935,
610547355,
4027169054,
1432588573,
1507829418,
2025931657,
3646575487,
545086370,
48609733,
2200306550,
1653985193,
298326376,
1316178497,
3007786442,
2064951626,
458293330,
2589141269,
3591329599,
3164325604,
727753846,
2179363840,
146436021,
1461446943,
4069977195,
705550613,
3059967265,
3887724982,
4281599278,
3313849956,
1404054877,
2845806497,
146425753,
1854211946,
1266315497,
3048417604,
3681880366,
3289982499,
2909710000,
1235738493,
2632868024,
2414719590,
3970600049,
1771706367,
1449415276,
3266420449,
422970021,
1963543593,
2690192192,
3826793022,
1062508698,
1531092325,
1804592342,
2583117782,
2714934279,
4024971509,
1294809318,
4028980673,
1289560198,
2221992742,
1669523910,
35572830,
157838143,
1052438473,
1016535060,
1802137761,
1753167236,
1386275462,
3080475397,
2857371447,
1040679964,
2145300060,
2390574316,
1461121720,
2956646967,
4031777805,
4028374788,
33600511,
2920084762,
1018524850,
629373528,
3691585981,
3515945977,
2091462646,
2486323059,
586499841,
988145025,
935516892,
3367335476,
2599673255,
2839830854,
265290510,
3972581182,
2759138881,
3795373465,
1005194799,
847297441,
406762289,
1314163512,
1332590856,
1866599683,
4127851711,
750260880,
613907577,
1450815602,
3165620655,
3734664991,
3650291728,
3012275730,
3704569646,
1427272223,
778793252,
1343938022,
2676280711,
2052605720,
1946737175,
3164576444,
3914038668,
3967478842,
3682934266,
1661551462,
3294938066,
4011595847,
840292616,
3712170807,
616741398,
312560963,
711312465,
1351876610,
322626781,
1910503582,
271666773,
2175563734,
1594956187,
70604529,
3617834859,
1007753275,
1495573769,
4069517037,
2549218298,
2663038764,
504708206,
2263041392,
3941167025,
2249088522,
1514023603,
1998579484,
1312622330,
694541497,
2582060303,
2151582166,
1382467621,
776784248,
2618340202,
3323268794,
2497899128,
2784771155,
503983604,
4076293799,
907881277,
423175695,
432175456,
1378068232,
4145222326,
3954048622,
3938656102,
3820766613,
2793130115,
2977904593,
26017576,
3274890735,
3194772133,
1700274565,
1756076034,
4006520079,
3677328699,
720338349,
1533947780,
354530856,
688349552,
3973924725,
1637815568,
332179504,
3949051286,
53804574,
2852348879,
3044236432,
1282449977,
3583942155,
3416972820,
4006381244,
1617046695,
2628476075,
3002303598,
1686838959,
431878346,
2686675385,
1700445008,
1080580658,
1009431731,
832498133,
3223435511,
2605976345,
2271191193,
2516031870,
1648197032,
4164389018,
2548247927,
300782431,
375919233,
238389289,
3353747414,
2531188641,
2019080857,
1475708069,
455242339,
2609103871,
448939670,
3451063019,
1395535956,
2413381860,
1841049896,
1491858159,
885456874,
4264095073,
4001119347,
1565136089,
3898914787,
1108368660,
540939232,
1173283510,
2745871338,
3681308437,
4207628240,
3343053890,
4016749493,
1699691293,
1103962373,
3625875870,
2256883143,
3830138730,
1031889488,
3479347698,
1535977030,
4236805024,
3251091107,
2132092099,
1774941330,
1199868427,
1452454533,
157007616,
2904115357,
342012276,
595725824,
1480756522,
206960106,
497939518,
591360097,
863170706,
2375253569,
3596610801,
1814182875,
2094937945,
3421402208,
1082520231,
3463918190,
2785509508,
435703966,
3908032597,
1641649973,
2842273706,
3305899714,
1510255612,
2148256476,
2655287854,
3276092548,
4258621189,
236887753,
3681803219,
274041037,
1734335097,
3815195456,
3317970021,
1899903192,
1026095262,
4050517792,
356393447,
2410691914,
3873677099,
3682840055,
3913112168,
2491498743,
4132185628,
2489919796,
1091903735,
1979897079,
3170134830,
3567386728,
3557303409,
857797738,
1136121015,
1342202287,
507115054,
2535736646,
337727348,
3213592640,
1301675037,
2528481711,
1895095763,
1721773893,
3216771564,
62756741,
2142006736,
835421444,
2531993523,
1442658625,
3659876326,
2882144922,
676362277,
1392781812,
170690266,
3921047035,
1759253602,
3611846912,
1745797284,
664899054,
1329594018,
3901205900,
3045908486,
2062866102,
2865634940,
3543621612,
3464012697,
1080764994,
553557557,
3656615353,
3996768171,
991055499,
499776247,
1265440854,
648242737,
3940784050,
980351604,
3713745714,
1749149687,
3396870395,
4211799374,
3640570775,
1161844396,
3125318951,
1431517754,
545492359,
4268468663,
3499529547,
1437099964,
2702547544,
3433638243,
2581715763,
2787789398,
1060185593,
1593081372,
2418618748,
4260947970,
69676912,
2159744348,
86519011,
2512459080,
3838209314,
1220612927,
3339683548,
133810670,
1090789135,
1078426020,
1569222167,
845107691,
3583754449,
4072456591,
1091646820,
628848692,
1613405280,
3757631651,
526609435,
236106946,
48312990,
2942717905,
3402727701,
1797494240,
859738849,
992217954,
4005476642,
2243076622,
3870952857,
3732016268,
765654824,
3490871365,
2511836413,
1685915746,
3888969200,
1414112111,
2273134842,
3281911079,
4080962846,
172450625,
2569994100,
980381355,
4109958455,
2819808352,
2716589560,
2568741196,
3681446669,
3329971472,
1835478071,
660984891,
3704678404,
4045999559,
3422617507,
3040415634,
1762651403,
1719377915,
3470491036,
2693910283,
3642056355,
3138596744,
1364962596,
2073328063,
1983633131,
926494387,
3423689081,
2150032023,
4096667949,
1749200295,
3328846651,
309677260,
2016342300,
1779581495,
3079819751,
111262694,
1274766160,
443224088,
298511866,
1025883608,
3806446537,
1145181785,
168956806,
3641502830,
3584813610,
1689216846,
3666258015,
3200248200,
1692713982,
2646376535,
4042768518,
1618508792,
1610833997,
3523052358,
4130873264,
2001055236,
3610705100,
2202168115,
4028541809,
2961195399,
1006657119,
2006996926,
3186142756,
1430667929,
3210227297,
1314452623,
4074634658,
4101304120,
2273951170,
1399257539,
3367210612,
3027628629,
1190975929,
2062231137,
2333990788,
2221543033,
2438960610,
1181637006,
548689776,
2362791313,
3372408396,
3104550113,
3145860560,
296247880,
1970579870,
3078560182,
3769228297,
1714227617,
3291629107,
3898220290,
166772364,
1251581989,
493813264,
448347421,
195405023,
2709975567,
677966185,
3703036547,
1463355134,
2715995803,
1338867538,
1343315457,
2802222074,
2684532164,
233230375,
2599980071,
2000651841,
3277868038,
1638401717,
4028070440,
3237316320,
6314154,
819756386,
300326615,
590932579,
1405279636,
3267499572,
3150704214,
2428286686,
3959192993,
3461946742,
1862657033,
1266418056,
963775037,
2089974820,
2263052895,
1917689273,
448879540,
3550394620,
3981727096,
150775221,
3627908307,
1303187396,
508620638,
2975983352,
2726630617,
1817252668,
1876281319,
1457606340,
908771278,
3720792119,
3617206836,
2455994898,
1729034894,
1080033504,
976866871,
3556439503,
2881648439,
1522871579,
1555064734,
1336096578,
3548522304,
2579274686,
3574697629,
3205460757,
3593280638,
3338716283,
3079412587,
564236357,
2993598910,
1781952180,
1464380207,
3163844217,
3332601554,
1699332808,
1393555694,
1183702653,
3581086237,
1288719814,
691649499,
2847557200,
2895455976,
3193889540,
2717570544,
1781354906,
1676643554,
2592534050,
3230253752,
1126444790,
2770207658,
2633158820,
2210423226,
2615765581,
2414155088,
3127139286,
673620729,
2805611233,
1269405062,
4015350505,
3341807571,
4149409754,
1057255273,
2012875353,
2162469141,
2276492801,
2601117357,
993977747,
3918593370,
2654263191,
753973209,
36408145,
2530585658,
25011837,
3520020182,
2088578344,
530523599,
2918365339,
1524020338,
1518925132,
3760827505,
3759777254,
1202760957,
3985898139,
3906192525,
674977740,
4174734889,
2031300136,
2019492241,
3983892565,
4153806404,
3822280332,
352677332,
2297720250,
60907813,
90501309,
3286998549,
1016092578,
2535922412,
2839152426,
457141659,
509813237,
4120667899,
652014361,
1966332200,
2975202805,
55981186,
2327461051,
676427537,
3255491064,
2882294119,
3433927263,
1307055953,
942726286,
933058658,
2468411793,
3933900994,
4215176142,
1361170020,
2001714738,
2830558078,
3274259782,
1222529897,
1679025792,
2729314320,
3714953764,
1770335741,
151462246,
3013232138,
1682292957,
1483529935,
471910574,
1539241949,
458788160,
3436315007,
1807016891,
3718408830,
978976581,
1043663428,
3165965781,
1927990952,
4200891579,
2372276910,
3208408903,
3533431907,
1412390302,
2931980059,
4132332400,
1947078029,
3881505623,
4168226417,
2941484381,
1077988104,
1320477388,
886195818,
18198404,
3786409000,
2509781533,
112762804,
3463356488,
1866414978,
891333506,
18488651,
661792760,
1628790961,
3885187036,
3141171499,
876946877,
2693282273,
1372485963,
791857591,
2686433993,
3759982718,
3167212022,
3472953795,
2716379847,
445679433,
3561995674,
3504004811,
3574258232,
54117162,
3331405415,
2381918588,
3769707343,
4154350007,
1140177722,
4074052095,
668550556,
3214352940,
367459370,
261225585,
2610173221,
4209349473,
3468074219,
3265815641,
314222801,
3066103646,
3808782860,
282218597,
3406013506,
3773591054,
379116347,
1285071038,
846784868,
2669647154,
3771962079,
3550491691,
2305946142,
453669953,
1268987020,
3317592352,
3279303384,
3744833421,
2610507566,
3859509063,
266596637,
3847019092,
517658769,
3462560207,
3443424879,
370717030,
4247526661,
2224018117,
4143653529,
4112773975,
2788324899,
2477274417,
1456262402,
2901442914,
1517677493,
1846949527,
2295493580,
3734397586,
2176403920,
1280348187,
1908823572,
3871786941,
846861322,
1172426758,
3287448474,
3383383037,
1655181056,
3139813346,
901632758,
1897031941,
2986607138,
3066810236,
3447102507,
1393639104,
373351379,
950779232,
625454576,
3124240540,
4148612726,
2007998917,
544563296,
2244738638,
2330496472,
2058025392,
1291430526,
424198748,
50039436,
29584100,
3605783033,
2429876329,
2791104160,
1057563949,
3255363231,
3075367218,
3463963227,
1469046755,
985887462
};
private static readonly uint[] BfCryptCiphertext = new uint[6] {
1332899944,
1700884034,
1701343084,
1684370003,
1668446532,
1869963892
};
private static readonly char[] Base64Code = new char[64] {
'.',
'/',
'A',
'B',
'C',
'D',
'E',
'F',
'G',
'H',
'I',
'J',
'K',
'L',
'M',
'N',
'O',
'P',
'Q',
'R',
'S',
'T',
'U',
'V',
'W',
'X',
'Y',
'Z',
'a',
'b',
'c',
'd',
'e',
'f',
'g',
'h',
'i',
'j',
'k',
'l',
'm',
'n',
'o',
'p',
'q',
'r',
's',
't',
'u',
'v',
'w',
'x',
'y',
'z',
'0',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9'
};
private static readonly int[] Index64 = new int[128] {
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
0,
1,
54,
55,
56,
57,
58,
59,
60,
61,
62,
63,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24,
25,
26,
27,
-1,
-1,
-1,
-1,
-1,
-1,
28,
29,
30,
31,
32,
33,
34,
35,
36,
37,
38,
39,
40,
41,
42,
43,
44,
45,
46,
47,
48,
49,
50,
51,
52,
53,
-1,
-1,
-1,
-1,
-1
};
private uint[] _p;
private uint[] _s;
public static string HashString(string source, SaltRevision saltSaltRevision = SaltRevision.Revision2B)
{
return HashPassword(source, saltSaltRevision);
}
public static string HashString(string source, int workFactor, SaltRevision saltSaltRevision = SaltRevision.Revision2B)
{
return HashPassword(source, GenerateSalt(workFactor, SaltRevision.Revision2B));
}
public static string HashPassword(string input, SaltRevision saltSaltRevision = SaltRevision.Revision2B)
{
return HashPassword(input, GenerateSalt(saltSaltRevision));
}
public static string HashPassword(string input, int workFactor, SaltRevision saltSaltRevision = SaltRevision.Revision2B)
{
return HashPassword(input, GenerateSalt(workFactor, saltSaltRevision));
}
public static string HashPassword(string input, string salt)
{
if (input == null)
throw new ArgumentNullException("input");
if (string.IsNullOrEmpty(salt))
throw new ArgumentException("Invalid salt", "salt");
char c = ' ';
if (salt[0] != '$' || salt[1] != '2')
throw new SaltParseException("Invalid salt version");
int num;
if (salt[2] == '$')
num = 3;
else {
c = salt[2];
if ((c != 'a' && c != 'b' && c != 'x' && c != 'y') || salt[3] != '$')
throw new SaltParseException("Invalid salt revision");
num = 4;
}
if (salt[num + 2] > '$')
throw new SaltParseException("Missing salt rounds");
int num2 = Convert.ToInt32(salt.Substring(num, 2));
string encodedstring = salt.Substring(num + 3, 22);
byte[] bytes = Encoding.UTF8.GetBytes(input + ((c >= 'a') ? " " : ""));
byte[] array = DecodeBase64(encodedstring, 16);
byte[] byteArray = new BCrypt().CryptRaw(bytes, array, num2);
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append("$2");
if (c >= 'a')
stringBuilder.Append(c);
stringBuilder.AppendFormat("${0:00}$", num2);
stringBuilder.Append(EncodeBase64(array, array.Length));
stringBuilder.Append(EncodeBase64(byteArray, BfCryptCiphertext.Length * 4 - 1));
return stringBuilder.ToString();
}
public static string GenerateSalt(int workFactor, SaltRevision saltSaltRevision = SaltRevision.Revision2B)
{
if (workFactor < 4 || workFactor > 31)
throw new ArgumentOutOfRangeException("workFactor", workFactor, "The work factor must be between 4 and 31 (inclusive)");
byte[] array = new byte[16];
RandomNumberGenerator.Create().GetBytes(array);
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.AppendFormat("${0}${1:00}$", GetSaltRevisionString(saltSaltRevision), workFactor);
stringBuilder.Append(EncodeBase64(array, array.Length));
return stringBuilder.ToString();
}
public static string GenerateSalt(SaltRevision saltSaltRevision = SaltRevision.Revision2B)
{
return GenerateSalt(10, saltSaltRevision);
}
public static bool Verify(string text, string hash)
{
return SafeEquals(hash, HashPassword(text, hash));
}
private static string EncodeBase64(byte[] byteArray, int length)
{
if (length <= 0 || length > byteArray.Length)
throw new ArgumentException("Invalid length", "length");
int num = 0;
StringBuilder stringBuilder = new StringBuilder();
while (num < length) {
int num3 = byteArray[num++] & 255;
stringBuilder.Append(Base64Code[(num3 >> 2) & 63]);
num3 = (num3 & 3) << 4;
if (num >= length) {
stringBuilder.Append(Base64Code[num3 & 63]);
break;
}
int num5 = byteArray[num++] & 255;
num3 |= ((num5 >> 4) & 15);
stringBuilder.Append(Base64Code[num3 & 63]);
num3 = (num5 & 15) << 2;
if (num >= length) {
stringBuilder.Append(Base64Code[num3 & 63]);
break;
}
num5 = (byteArray[num++] & 255);
num3 |= ((num5 >> 6) & 3);
stringBuilder.Append(Base64Code[num3 & 63]);
stringBuilder.Append(Base64Code[num5 & 63]);
}
return stringBuilder.ToString();
}
private static byte[] DecodeBase64(string encodedstring, int maximumBytes)
{
int num = 0;
int length = encodedstring.Length;
int num2 = 0;
if (maximumBytes <= 0)
throw new ArgumentException("Invalid maximum bytes value", "maximumBytes");
StringBuilder stringBuilder = new StringBuilder();
while (num < length - 1 && num2 < maximumBytes) {
int num4 = Char64(encodedstring[num++]);
int num6 = Char64(encodedstring[num++]);
if (num4 == -1 || num6 == -1)
break;
stringBuilder.Append((char)((num4 << 2) | ((num6 & 48) >> 4)));
if (++num2 >= maximumBytes || num >= length)
break;
int num8 = Char64(encodedstring[num++]);
if (num8 == -1)
break;
stringBuilder.Append((char)(((num6 & 15) << 4) | ((num8 & 60) >> 2)));
if (++num2 >= maximumBytes || num >= length)
break;
int num10 = Char64(encodedstring[num++]);
stringBuilder.Append((char)(((num8 & 3) << 6) | num10));
num2++;
}
byte[] array = new byte[num2];
for (num = 0; num < num2; num++) {
array[num] = (byte)stringBuilder[num];
}
return array;
}
private static int Char64(char character)
{
if (character < ' ' || character > Index64.Length)
return -1;
return Index64[character];
}
private void Encipher(uint[] blockArray, int offset)
{
uint num = blockArray[offset];
uint num2 = blockArray[offset + 1];
num ^= _p[0];
uint num3 = 0;
while (num3 <= 14) {
uint num4 = _s[(num >> 24) & 255];
num4 += _s[256 | ((num >> 16) & 255)];
num4 ^= _s[512 | ((num >> 8) & 255)];
num4 += _s[768 | (num & 255)];
num2 ^= (num4 ^ _p[++num3]);
num4 = _s[(num2 >> 24) & 255];
num4 += _s[256 | ((num2 >> 16) & 255)];
num4 ^= _s[512 | ((num2 >> 8) & 255)];
num4 += _s[768 | (num2 & 255)];
num ^= (num4 ^ _p[++num3]);
}
blockArray[offset] = (num2 ^ _p[17]);
blockArray[offset + 1] = num;
}
private static uint StreamToWord(byte[] data, ref int offset)
{
uint num = 0;
for (int i = 0; i < 4; i++) {
num = (uint)((int)(num << 8) | (data[offset] & 255));
offset = (offset + 1) % data.Length;
}
return num;
}
private void InitializeKey()
{
_p = new uint[POrig.Length];
_s = new uint[SOrig.Length];
Array.Copy(POrig, _p, POrig.Length);
Array.Copy(SOrig, _s, SOrig.Length);
}
private void Key(byte[] keyBytes)
{
int offset = 0;
uint[] array = new uint[2];
int num = _p.Length;
int num2 = _s.Length;
for (int i = 0; i < num; i++) {
_p[i] ^= StreamToWord(keyBytes, ref offset);
}
for (int i = 0; i < num; i += 2) {
Encipher(array, 0);
_p[i] = array[0];
_p[i + 1] = array[1];
}
for (int i = 0; i < num2; i += 2) {
Encipher(array, 0);
_s[i] = array[0];
_s[i + 1] = array[1];
}
}
private void EksKey(byte[] saltBytes, byte[] inputBytes)
{
int offset = 0;
int offset2 = 0;
uint[] array = new uint[2];
int num = _p.Length;
int num2 = _s.Length;
for (int i = 0; i < num; i++) {
_p[i] ^= StreamToWord(inputBytes, ref offset);
}
for (int i = 0; i < num; i += 2) {
array[0] ^= StreamToWord(saltBytes, ref offset2);
array[1] ^= StreamToWord(saltBytes, ref offset2);
Encipher(array, 0);
_p[i] = array[0];
_p[i + 1] = array[1];
}
for (int i = 0; i < num2; i += 2) {
array[0] ^= StreamToWord(saltBytes, ref offset2);
array[1] ^= StreamToWord(saltBytes, ref offset2);
Encipher(array, 0);
_s[i] = array[0];
_s[i + 1] = array[1];
}
}
private byte[] CryptRaw(byte[] inputBytes, byte[] saltBytes, int logRounds)
{
uint[] array = new uint[BfCryptCiphertext.Length];
Array.Copy(BfCryptCiphertext, array, BfCryptCiphertext.Length);
int num = array.Length;
if (logRounds < 4 || logRounds > 31)
throw new ArgumentException("Bad number of rounds", "logRounds");
uint num2 = (uint)(1 << logRounds);
if (num2 == 0)
throw new ArgumentException("Rounds must be > 0", "logRounds");
if (saltBytes.Length != 16)
throw new ArgumentException("Bad salt Length", "saltBytes");
InitializeKey();
EksKey(saltBytes, inputBytes);
for (int i = 0; i < num2; i++) {
Key(inputBytes);
Key(saltBytes);
}
for (int j = 0; j < 64; j++) {
for (int k = 0; k < num >> 1; k++) {
Encipher(array, k << 1);
}
}
byte[] array2 = new byte[num * 4];
int l = 0;
int num3 = 0;
for (; l < num; l++) {
array2[num3++] = (byte)((array[l] >> 24) & 255);
array2[num3++] = (byte)((array[l] >> 16) & 255);
array2[num3++] = (byte)((array[l] >> 8) & 255);
array2[num3++] = (byte)(array[l] & 255);
}
return array2;
}
private static bool SafeEquals(string a, string b)
{
uint num = (uint)(a.Length ^ b.Length);
for (int i = 0; i < a.Length && i < b.Length; i++) {
num = (uint)((int)num | (a[i] ^ b[i]));
}
return num == 0;
}
private static string GetSaltRevisionString(SaltRevision saltSaltRevision)
{
switch (saltSaltRevision) {
case SaltRevision.Revision2:
return "2";
case SaltRevision.Revision2A:
return "2a";
case SaltRevision.Revision2B:
return "2b";
case SaltRevision.Revision2X:
return "2x";
case SaltRevision.Revision2Y:
return "2y";
default:
throw new ArgumentOutOfRangeException("saltSaltRevision", saltSaltRevision, null);
}
}
}
}