SeedEngine
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto.Utilities;
using System;
namespace Org.BouncyCastle.Crypto.Engines
{
public class SeedEngine : IBlockCipher
{
private const int BlockSize = 16;
private static readonly uint[] SS0 = new uint[256] {
696885672,
92635524,
382128852,
331600848,
340021332,
487395612,
747413676,
621093156,
491606364,
54739776,
403181592,
504238620,
289493328,
1020063996,
181060296,
591618912,
671621160,
71581764,
536879136,
495817116,
549511392,
583197408,
147374280,
386339604,
629514660,
261063564,
50529024,
994800504,
999011256,
318968592,
314757840,
785310444,
809529456,
210534540,
1057960764,
680042664,
839004720,
500027868,
919007988,
876900468,
751624428,
361075092,
185271048,
390550356,
474763356,
457921368,
1032696252,
16843008,
604250148,
470552604,
860058480,
411603096,
268439568,
214745292,
851636976,
432656856,
738992172,
667411428,
843215472,
58950528,
462132120,
297914832,
109478532,
164217288,
541089888,
272650320,
595829664,
734782440,
218956044,
914797236,
512660124,
256852812,
931640244,
441078360,
113689284,
944271480,
646357668,
302125584,
797942700,
365285844,
557932896,
63161280,
881111220,
21053760,
306336336,
1028485500,
227377548,
134742024,
521081628,
428446104,
0,
420024600,
67371012,
323179344,
935850996,
566354400,
1036907004,
910586484,
789521196,
654779172,
813740208,
193692552,
235799052,
730571688,
578986656,
776888940,
327390096,
223166796,
692674920,
1011642492,
151585032,
168428040,
1066382268,
802153452,
868479984,
96846276,
126321540,
335810580,
1053750012,
608460900,
516870876,
772678188,
189481800,
436867608,
101057028,
553722144,
726360936,
642146916,
33686016,
902164980,
310547088,
176849544,
202113036,
864269232,
1045328508,
281071824,
977957496,
122110788,
377918100,
633725412,
637936164,
8421504,
764256684,
533713884,
562143648,
805318704,
923218740,
781099692,
906375732,
352653588,
570565152,
940060728,
885321972,
663200676,
88424772,
206323788,
25264512,
701096424,
75792516,
394761108,
889532724,
197903304,
248431308,
1007431740,
826372464,
285282576,
130532292,
160006536,
893743476,
1003222008,
449499864,
952692984,
344232084,
424235352,
42107520,
80003268,
1070593020,
155795784,
956903736,
658989924,
12632256,
265274316,
398971860,
948482232,
252642060,
244220556,
37896768,
587408160,
293704080,
743202924,
466342872,
612671652,
872689716,
834793968,
138952776,
46318272,
793731948,
1024274748,
755835180,
4210752,
1049539260,
1041117756,
1015853244,
29475264,
713728680,
982168248,
240009804,
356864340,
990589752,
483184860,
675831912,
1062171516,
478974108,
415813848,
172638792,
373707348,
927429492,
545300640,
768467436,
105267780,
897954228,
722150184,
625303908,
986379000,
600040416,
965325240,
830583216,
529503132,
508449372,
969535992,
650568420,
847426224,
822161712,
717939432,
760045932,
525292380,
616882404,
817950960,
231588300,
143163528,
369496596,
973746744,
407392344,
348442836,
574775904,
688464168,
117900036,
855847728,
684253416,
453710616,
84214020,
961114488,
276861072,
709517928,
705307176,
445289112
};
private static readonly uint[] SS1 = new uint[256] {
943196208,
3894986976,
741149985,
2753988258,
3423588291,
3693006546,
2956166067,
3090712752,
2888798115,
1612726368,
1410680145,
3288844227,
1141130304,
1815039843,
1747667811,
1478183763,
3221472195,
1612857954,
808649523,
3023406513,
673777953,
2686484640,
3760374498,
2754054051,
3490956243,
2417066385,
269549841,
67503618,
471600144,
3158084784,
875955762,
1208699715,
3962556387,
2282260608,
1814842464,
2821228704,
337053459,
3288646848,
336987666,
4097098992,
3221406402,
1141196097,
3760308705,
3558262482,
1010765619,
1010634033,
2349764226,
2551744656,
673712160,
1276005954,
4097230578,
1010699826,
2753922465,
4164536817,
202181889,
3693072339,
3625502928,
673909539,
1680229986,
2017086066,
606537507,
741281571,
4029792753,
1882342002,
1073889858,
3558130896,
1073824065,
3221274816,
1882407795,
1680295779,
2888600736,
2282457987,
4097296371,
2888666529,
2147516544,
471797523,
3356150466,
741084192,
2821360290,
875824176,
3490890450,
134941443,
3962490594,
3895052769,
1545424209,
2484372624,
404228112,
4164471024,
1410811731,
2888732322,
134744064,
3288712641,
269681427,
3423456705,
2215020162,
3090778545,
4232040435,
2084392305,
3221340609,
808517937,
4097164785,
2282392194,
1747602018,
2956034481,
3490824657,
538968096,
3558328275,
131586,
539099682,
67372032,
1747470432,
1882276209,
67569411,
3625700307,
2619182481,
2551810449,
1612792161,
3158216370,
3827746530,
1478052177,
3692940753,
1343308113,
2417000592,
3692874960,
2551876242,
2686682019,
2821426083,
3490758864,
2147582337,
202313475,
1141327683,
404359698,
3760440291,
3962359008,
2349698433,
3158282163,
2484504210,
2017151859,
1545358416,
2686616226,
2686550433,
1612923747,
539165475,
1275940161,
3356018880,
2619248274,
2619116688,
943327794,
202116096,
741215778,
3090844338,
1814974050,
2619314067,
1478117970,
4029858546,
2417132178,
4029924339,
1208568129,
2016954480,
3423390912,
336921873,
4164668403,
1882210416,
1949648241,
2084523891,
875889969,
269484048,
197379,
1680098400,
1814908257,
3288778434,
1949582448,
3558196689,
3023340720,
3895118562,
134809857,
1949714034,
404293905,
4231974642,
1073758272,
269615634,
3760242912,
3158150577,
67437825,
4164602610,
65793,
4029726960,
673843746,
1545490002,
2821294497,
1410745938,
1073955651,
2214954369,
336856080,
2282326401,
2551942035,
2955968688,
3827680737,
1208502336,
2017020273,
2484570003,
4231843056,
471731730,
2147648130,
539033889,
2349632640,
404425491,
1545555795,
1949779827,
1410614352,
2956100274,
471665937,
606405921,
1276071747,
0,
1141261890,
3962424801,
1477986384,
1343373906,
3895184355,
2084458098,
3625634514,
3356084673,
4231908849,
808452144,
2484438417,
1680164193,
1010568240,
3023472306,
3827614944,
3090910131,
2084326512,
202247682,
1343242320,
943262001,
606471714,
808583730,
2214888576,
1747536225,
2417197971,
876021555,
3827812323,
606340128,
2753856672,
3356216259,
1343439699,
134875650,
2215085955,
3625568721,
1275874368,
2147713923,
2349830019,
3423522498,
943393587,
1208633922,
3023538099
};
private static readonly uint[] SS2 = new uint[256] {
2712152457,
2172913029,
3537114822,
3553629123,
1347687492,
287055117,
2695638156,
556016901,
1364991309,
1128268611,
270014472,
303832590,
1364201793,
4043062476,
3267889866,
1667244867,
539502600,
1078199364,
538976256,
2442927501,
3772784832,
3806339778,
3234334920,
320083719,
2711889285,
2206994319,
50332419,
1937259339,
3015195531,
319820547,
3536851650,
3807129294,
1886400576,
2156661900,
859586319,
2695374984,
842019330,
3520863693,
4076091078,
1886663748,
3773574348,
2442401157,
50858763,
1398019911,
1348213836,
1398283083,
2981903757,
16777473,
539239428,
270277644,
1936732995,
2425886856,
269488128,
3234598092,
4075827906,
3520600521,
539765772,
3823380423,
1919955522,
2206204803,
2476219275,
3520074177,
2189690502,
3251112393,
1616912448,
1347424320,
2745181059,
3823643595,
17566989,
2998154886,
2459704974,
1129058127,
3014932359,
1381505610,
3267626694,
1886926920,
2728666758,
303043074,
2745970575,
3520337349,
1633689921,
3284140995,
2964599940,
1094713665,
1380979266,
1903967565,
2173439373,
526344,
320610063,
2442664329,
0,
286791945,
263172,
1397756739,
4092868551,
3789562305,
4059839949,
1920218694,
590098191,
589571847,
2964336768,
2206731147,
34344462,
2745707403,
2728403586,
1651256910,
2475692931,
1095503181,
1634216265,
1887190092,
17303817,
34081290,
3015458703,
3823906767,
4092605379,
3250849221,
2206467975,
269751300,
4076617422,
1617175620,
3537641166,
573320718,
1128794955,
303569418,
33818118,
555753729,
1667771211,
1650730566,
33554946,
4059313605,
2458915458,
2189953674,
789516,
3014669187,
1920745038,
3503296704,
1920481866,
1128531783,
2459178630,
3789825477,
572794374,
2155872384,
2712415629,
3554418639,
2711626113,
808464384,
859059975,
2729193102,
842282502,
286528773,
572531202,
808990728,
4042536132,
2745444231,
1094976837,
1078725708,
2172649857,
3790088649,
2156135556,
2475956103,
825505029,
3284667339,
3268153038,
809253900,
1903178049,
286265601,
3284404167,
2173176201,
1903441221,
4093131723,
3537377994,
4042799304,
2425623684,
1364728137,
2189427330,
3234071748,
4093394895,
1095240009,
825768201,
1667508039,
3233808576,
3284930511,
3553892295,
2964863112,
51121935,
2190216846,
1111491138,
589308675,
2442137985,
1617701964,
3554155467,
2695111812,
808727556,
4059050433,
1078462536,
3267363522,
1668034383,
826031373,
556543245,
1077936192,
2998681230,
842808846,
2965126284,
3250586049,
2728929930,
2998418058,
1112280654,
1364464965,
859323147,
3504086220,
1617438792,
1937522511,
2426150028,
3503823048,
1112017482,
1381242438,
1936996167,
2694848640,
3790351821,
1111754310,
2981377413,
589835019,
1633953093,
4076354250,
3823117251,
2981640585,
2981114241,
2476482447,
1381768782,
4059576777,
3806602950,
2997891714,
825241857,
3806866122,
1634479437,
1398546255,
3773048004,
4042272960,
3251375565,
2156398728,
303306246,
842545674,
1347950664,
3503559876,
1650467394,
556280073,
50595591,
858796803,
3773311176,
320346891,
17040645,
1903704393,
2425360512,
1650993738,
573057546,
2459441802
};
private static readonly uint[] SS3 = new uint[256] {
137377848,
3370182696,
220277805,
2258805798,
3485715471,
3469925406,
2209591347,
2293282872,
2409868335,
1080057888,
1162957845,
3351495687,
1145062404,
1331915823,
1264805931,
1263753243,
3284385795,
1113743394,
53686323,
2243015733,
153167913,
2158010400,
3269648418,
2275648551,
3285438483,
2173800465,
17895441,
100795398,
202382364,
2360392764,
103953462,
1262700555,
3487820847,
2290124808,
1281387564,
2292230184,
118690839,
3300967428,
101848086,
3304125492,
3267543042,
1161905157,
3252805665,
3335705622,
255015999,
221330493,
2390920206,
2291177496,
136325160,
1312967694,
3337810998,
238173246,
2241963045,
3388078137,
218172429,
3486768159,
3369130008,
186853419,
1180853286,
1249015866,
119743527,
253963311,
3253858353,
1114796082,
1111638018,
3302020116,
1094795265,
3233857536,
1131638835,
1197696039,
2359340076,
2340653067,
3354653751,
2376182829,
2155905024,
252910623,
3401762826,
203435052,
2325915690,
70267956,
3268595730,
184748043,
3470978094,
3387025449,
1297177629,
2224067604,
135272472,
3371235384,
1196643351,
2393025582,
134219784,
3317810181,
51580947,
3452029965,
2256700422,
2310125625,
3488873535,
1299283005,
3250700289,
20000817,
3320968245,
2323810314,
1247963178,
2175905841,
3251752977,
2105376,
3352548375,
33685506,
35790882,
67109892,
1214277672,
1097953329,
117638151,
3419658267,
2375130141,
2308020249,
1096900641,
2394078270,
3336758310,
1230067737,
3453082653,
1095847953,
2156957712,
3436239900,
2324863002,
2208538659,
2342758443,
3234910224,
2172747777,
251857935,
1195590663,
168957978,
3286491171,
3437292588,
2374077453,
2410921023,
2257753110,
1265858619,
1280334876,
2191695906,
2174853153,
1130586147,
52633635,
1296124941,
3368077320,
2391972894,
2358287388,
171063354,
201329676,
237120558,
2326968378,
1315073070,
2408815647,
1246910490,
3270701106,
2190643218,
3287543859,
1229015049,
1215330360,
3435187212,
85005333,
3421763643,
1081110576,
1165063221,
1332968511,
87110709,
1052688,
50528259,
1147167780,
1298230317,
3334652934,
1148220468,
3318862869,
2226172980,
3403868202,
151062537,
1181905974,
152115225,
3472030782,
1077952512,
34738194,
3235962912,
2377235517,
83952645,
3404920890,
16842753,
3237015600,
170010666,
1314020382,
2309072937,
1179800598,
1128480771,
2239857669,
68162580,
2306967561,
2341705755,
2159063088,
3319915557,
1212172296,
1232173113,
2274595863,
3438345276,
236067870,
2189590530,
18948129,
2357234700,
185800731,
1330863135,
1198748727,
1146115092,
2192748594,
219225117,
86058021,
1329810447,
0,
1178747910,
3454135341,
1213224984,
1112690706,
3420710955,
1316125758,
3402815514,
3384920073,
3455188029,
3158064,
2240910357,
1164010533,
204487740,
2259858486,
3303072804,
2343811131,
1282440252,
235015182,
1079005200,
154220601,
102900774,
36843570,
2223014916,
1231120425,
2207485971,
120796215,
3353601063,
69215268,
2225120292,
3418605579,
1129533459,
167905290,
2273543175,
3385972761,
1279282188,
2206433283,
2407762959,
3468872718,
187906107,
1245857802,
2276701239
};
private static readonly uint[] KC = new uint[16] {
2654435769,
1013904243,
2027808486,
4055616972,
3816266649,
3337566003,
2380164711,
465362127,
930724254,
1861448508,
3722897016,
3150826737,
2006686179,
4013372358,
3731777421,
3168587547
};
private int[] wKey;
private bool forEncryption;
public virtual string AlgorithmName => "SEED";
public virtual void Init(bool forEncryption, ICipherParameters parameters)
{
this.forEncryption = forEncryption;
wKey = CreateWorkingKey((KeyParameter)parameters);
}
public virtual int GetBlockSize()
{
return 16;
}
public virtual int ProcessBlock(byte[] inBuf, int inOff, byte[] outBuf, int outOff)
{
Check.DataLength(inBuf, inOff, 16, "input buffer too short");
Check.OutputLength(outBuf, outOff, 16, "output buffer too short");
if (wKey == null)
throw new InvalidOperationException("SEED engine not initialised");
long num = (long)Pack.BE_To_UInt64(inBuf, inOff);
long num2 = (long)Pack.BE_To_UInt64(inBuf, inOff + 8);
if (forEncryption) {
for (int i = 0; i < 32; i += 4) {
int ki = wKey[i];
int ki2 = wKey[i + 1];
int ki3 = wKey[i + 2];
int ki4 = wKey[i + 3];
num ^= F(ki, ki2, num2);
num2 ^= F(ki3, ki4, num);
}
} else {
for (int num3 = 28; num3 >= 0; num3 -= 4) {
int ki5 = wKey[num3];
int ki6 = wKey[num3 + 1];
int ki7 = wKey[num3 + 2];
int ki8 = wKey[num3 + 3];
num ^= F(ki7, ki8, num2);
num2 ^= F(ki5, ki6, num);
}
}
Pack.UInt64_To_BE((ulong)num2, outBuf, outOff);
Pack.UInt64_To_BE((ulong)num, outBuf, outOff + 8);
return 16;
}
private static int[] CreateWorkingKey(KeyParameter keyParameter)
{
if (keyParameter.KeyLength != 16)
throw new ArgumentException("key size must be 128 bits");
byte[] key = keyParameter.GetKey();
int[] array = new int[32];
uint num = Pack.BE_To_UInt32(key, 0);
uint num2 = Pack.BE_To_UInt32(key, 4);
uint num3 = Pack.BE_To_UInt32(key, 8);
uint num4 = Pack.BE_To_UInt32(key, 12);
for (int i = 0; i < 16; i += 2) {
uint num5 = KC[i];
array[2 * i] = G((int)(num + num3 - num5));
array[2 * i + 1] = G((int)(num2 - num4 + num5));
uint num6 = (num >> 8) | (num2 << 24);
num2 = ((num2 >> 8) | (num << 24));
num = num6;
num5 = KC[i + 1];
array[2 * i + 2] = G((int)(num + num3 - num5));
array[2 * i + 3] = G((int)(num2 - num4 + num5));
uint num7 = (num3 << 8) | (num4 >> 24);
num4 = ((num4 << 8) | (num3 >> 24));
num3 = num7;
}
return array;
}
private static long F(int ki0, int ki1, long r)
{
int num = ki0 ^ (int)(r >> 32);
int num2 = ki1 ^ (int)r;
int num3 = G(num ^ num2);
int num4 = G(num + num3);
int num5 = G(num4 + num3);
return ((long)(num5 + num4) << 32) | (num5 & uint.MaxValue);
}
private static int G(int x)
{
return (int)(SS0[x & 255] ^ SS1[(x >> 8) & 255] ^ SS2[(x >> 16) & 255] ^ SS3[(x >> 24) & 255]);
}
}
}