TigerDigest
using Org.BouncyCastle.Crypto.Utilities;
using Org.BouncyCastle.Utilities;
using System;
namespace Org.BouncyCastle.Crypto.Digests
{
public class TigerDigest : IDigest, IMemoable
{
private const int MyByteLength = 64;
private static readonly long[] t1 = new long[256] {
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8272369121297300691,
7854730284916899642,
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-1458735953920612486
};
private static readonly long[] t2 = new long[256] {
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6213947727727520144,
5496303794639560149,
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642450021946863605,
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};
private static readonly long[] t3 = new long[256] {
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1445978213955986826,
-7979034942316814172,
951333080223670799,
6099155138413436065,
-4305900099056973791,
-6236769450809946705,
-2912898243239114769,
-2065740773420267803,
-3827177893057145596,
1340472571717533606,
-3648363291767490877,
-5756567784146095673,
4461163794677446508,
-5848717005041324781,
3341940384398866564,
-4882598382547103543,
3829921822543532494,
899996630714791418,
6478536468284266291,
2994597028103565543,
6124895672834828926,
-8376542604899771579,
-4412652237062246342,
-7724700941812371646,
728866099714851926,
339635816873858970,
-1153572816294167456,
-592215260546165052,
-7150089944179092253,
8700134485486622004,
-5552633324984327062,
-1298517758115136471,
8749621007278605595,
-6133576477421907076,
4199955888901663150,
-5341432795218012713,
-239890188217778377,
8106773277103211697,
-2229320058079270256,
5930619164422717276,
4368075505682949467,
4623369983466747106,
8403817438537116875,
-5327756068839670070,
1151085119119418028,
6933250016240323664,
6814675599201764477,
-2995490164984896514,
5778917359701360712,
-7334472845550608018,
-9212347808668562614,
-7786744047088363785,
4025584697920591189,
5446500518121291045,
-7866665254384488512,
-352887593087136842,
8290028954029701554,
-9087549732707247512,
7234639242841923679,
2860911103167493259,
-3716770017321781837,
7444204691177324181,
8012224255291120002,
6549509778060988165,
-4656265058823564969,
-1532696805485516055,
4993489137437819341,
4727924503904151836,
-3180601338503688336,
7858325008468642462
};
private static readonly long[] t4 = new long[256] {
6561287832113134677,
1893413629145602549,
-6205320776685678598,
7334764389497132503,
421942495471316930,
-9085229951450268347,
5948965432456907277,
-6872877502453521409,
4831763938021002582,
-4272888574428519313,
5678704711006605406,
4536654317168965104,
802439540090739142,
1728614842704535657,
7852250862810361152,
-2970083550513149273,
6999787169451700297,
327545298748531618,
-2764213178345403342,
9213801181845131435,
-5950018878971805109,
-2186876610533351532,
-3100863505161590557,
-194921935069456237,
2629011484744925146,
679658461659738748,
-3068808746888436091,
2845612796809381245,
-7722098226173915145,
7273530125705028225,
4410076014410041819,
-2304212329100317967,
-45936371244098582,
-5712723046817425393,
8922873767131958175,
-3382299200423854708,
-3236816455951139535,
-4036747678298392505,
5226125132195873799,
2940247444995640068,
-4418018165041970817,
6671397049608501367,
8821388386505911040,
-3580187736799586652,
-1447046360908978430,
2147098610462912262,
-1956265881574637814,
-2856917834249223582,
5141735866072457044,
3265027362719053310,
-6450920645962515936,
6017965846669640613,
4287051124723328232,
8655371236021312991,
-1156847972119148173,
2365060307249772354,
1630631832073154105,
1828719980936758421,
2674037562503248056,
-7295616781251116690,
-1363141094472255887,
204405347605452144,
5797523068258732423,
8122903338174012641,
8739821670855295734,
961841682317282412,
3487881148722869326,
-7995384159388863717,
7665614591556333409,
-7831409025227614873,
-822907162794399275,
-1691135090558933875,
3797048810173566205,
-2578904300750297763,
-3410711173298709536,
577633178325057199,
-7379212936790430923,
-9035774148364232240,
2754939666238358593,
8444132705799138470,
-7894221632442939675,
3065464070595795438,
-6610449357786147779,
3184382822055416328,
5740274767717360273,
6179930651821454089,
-4826152258144849421,
5115645765347262247,
4602739923119569497,
-3465801151231271281,
-6359599548771540712,
-1926152657970122275,
-8468989295385802946,
-6500580506154635033,
4125629484990072616,
-6834670983768857044,
-4845179353893108027,
4230689665262407186,
-1849684427061896393,
9047540561879224854,
1112218670439199625,
8426162753992594376,
-5990769681480860131,
-2503790423972405993,
4028912247909671416,
-409156412951274838,
-8377831951645714695,
-1152570669068554652,
-6327418252815316840,
-3725559206061705268,
1964465731879646024,
-2441760721249263597,
6946242362685775318,
-3298979752616086841,
-7236283555339513389,
-1419193050620496778,
-93735727476260563,
-5905399081030416230,
2507248404937789251,
7581261321693772141,
-8836566033099333598,
520172056875071564,
3738403388662150470,
-2357506837776452040,
-5002739851233418934,
930169001927683533,
6889748805645999668,
-1031349426815687751,
7941113837267854943,
-1243211017071393764,
-2154628650105719635,
6332043450707792835,
3386824618901547762,
7130458179308482168,
1271522336860346025,
-997034324337437613,
4823850509807911142,
3107332511049695348,
5437793788182680416,
-8315628002795417155,
1494290439970088554,
-8609438560643873897,
-8207953325454440687,
-5432621302919780015,
1159256241058966379,
1026141471931805870,
-8215608786054685932,
-609691062749569444,
7511556330643118785,
-3915792337899679783,
3932170512244996561,
6834333685245251200,
4355290964656419152,
6487547078612259600,
6267880520331323438,
-1545475867304599653,
8190919284549556346,
3366895789332200348,
2444540809879438627,
6459524513146455969,
4077716903750958194,
-6168929569432701476,
-6973483665415634802,
-5197441416039796052,
7734160491610189202,
7910254887717195099,
3836881802794822270,
8311228008842563790,
730509642500215940,
-650400159804944995,
-5124223765383482859,
3579688877020158541,
8591780283260295173,
5028082178778891827,
-498814760953987530,
-2709709455026140056,
5487541034902828271,
8530400576707172340,
-7604535187505054453,
-869656751120750718,
4656569414526204412,
491061932033469878,
8035458231926703496,
137019260109594401,
7421708309958176805,
8223709417363553275,
5401705824239018731,
-7162608250562934562,
5308870500428712900,
-5508949737295341638,
1376856236535589493,
-5655908917112005032,
-7100674984259216372,
1332977380922036690,
3015788518022419172,
-6718854486329987908,
6396540069380292132,
2034188120276215631,
-1655134238111203034,
-509741179510489141,
3623665942510192329,
-9164935270648710301,
1765784450088366494,
5837777785993897047,
1564973338399864744,
-2605395199060435761,
4964475598524693274,
-5312043978489901415,
6706291041494563888,
-789946623649963734,
-8091303779971721549,
7456716478970921562,
-335263357675197259,
-8515348892102079999,
-7048796562806032069,
-233028078259189719,
284725780453796946,
-3832073186324226638,
-4921235094493811069,
-5089093504863659344,
-5607539644671350465,
-8911681616096439592,
-4743899514573401058,
-7664321526450198170,
-4599281686566632149,
2560491659082246267,
8971180328015050686,
2265540171276805379,
6093561527083620308,
12169565841013306,
9128413284208255679,
-4178722056535276608,
-8960148414521589626,
-4216952774774654326,
-5374970407177951367,
-6668788646589711127,
-2946910590031425822,
-8674853389405194592,
-7535980417822448849,
-6115357923114297461,
-8065837346967928004,
-7487037274649424496,
-2061373546992596293,
-5783192355322733388,
7153300451507295513,
-8779488031786375734,
2187906506867626476,
5612681432830855607,
-4653220181978985551,
4688837593722596333,
-3815667051463559517,
-1779743783662362556,
-3650491565905270770,
-4529053496248414107,
-4021111997381021802,
-4350414089199835873
};
private const int DigestLength = 24;
private long a;
private long b;
private long c;
private long byteCount;
private byte[] m_buffer = new byte[8];
private int bOff;
private long[] x = new long[8];
private int xOff;
public string AlgorithmName => "Tiger";
public TigerDigest()
{
Reset();
}
public TigerDigest(TigerDigest t)
{
Reset(t);
}
public int GetDigestSize()
{
return 24;
}
public int GetByteLength()
{
return 64;
}
private void ProcessWord(byte[] b, int off)
{
x[xOff++] = (long)Pack.LE_To_UInt64(b, off);
if (xOff == x.Length)
ProcessBlock();
bOff = 0;
}
public void Update(byte input)
{
m_buffer[bOff++] = input;
if (bOff == m_buffer.Length)
ProcessWord(m_buffer, 0);
byteCount++;
}
public void BlockUpdate(byte[] input, int inOff, int length)
{
while (bOff != 0 && length > 0) {
Update(input[inOff]);
inOff++;
length--;
}
while (length >= 8) {
ProcessWord(input, inOff);
inOff += 8;
length -= 8;
byteCount += 8;
}
while (length > 0) {
Update(input[inOff]);
inOff++;
length--;
}
}
private void RoundABC(long x, long mul)
{
c ^= x;
a -= (t1[(int)c & 255] ^ t2[(int)(c >> 16) & 255] ^ t3[(int)(c >> 32) & 255] ^ t4[(int)(c >> 48) & 255]);
b += (t4[(int)(c >> 8) & 255] ^ t3[(int)(c >> 24) & 255] ^ t2[(int)(c >> 40) & 255] ^ t1[(int)(c >> 56) & 255]);
b *= mul;
}
private void RoundBCA(long x, long mul)
{
a ^= x;
b -= (t1[(int)a & 255] ^ t2[(int)(a >> 16) & 255] ^ t3[(int)(a >> 32) & 255] ^ t4[(int)(a >> 48) & 255]);
c += (t4[(int)(a >> 8) & 255] ^ t3[(int)(a >> 24) & 255] ^ t2[(int)(a >> 40) & 255] ^ t1[(int)(a >> 56) & 255]);
c *= mul;
}
private void RoundCAB(long x, long mul)
{
b ^= x;
c -= (t1[(int)b & 255] ^ t2[(int)(b >> 16) & 255] ^ t3[(int)(b >> 32) & 255] ^ t4[(int)(b >> 48) & 255]);
a += (t4[(int)(b >> 8) & 255] ^ t3[(int)(b >> 24) & 255] ^ t2[(int)(b >> 40) & 255] ^ t1[(int)(b >> 56) & 255]);
a *= mul;
}
private void KeySchedule()
{
x[0] -= (x[7] ^ -6510615555426900571);
x[1] ^= x[0];
x[2] += x[1];
x[3] -= (x[2] ^ (~x[1] << 19));
x[4] ^= x[3];
x[5] += x[4];
x[6] -= (x[5] ^ (long)((ulong)(~x[4]) >> 23));
x[7] ^= x[6];
x[0] += x[7];
x[1] -= (x[0] ^ (~x[7] << 19));
x[2] ^= x[1];
x[3] += x[2];
x[4] -= (x[3] ^ (long)((ulong)(~x[2]) >> 23));
x[5] ^= x[4];
x[6] += x[5];
x[7] -= (x[6] ^ 81985529216486895);
}
private void ProcessBlock()
{
long num = a;
long num2 = b;
long num3 = c;
RoundABC(x[0], 5);
RoundBCA(x[1], 5);
RoundCAB(x[2], 5);
RoundABC(x[3], 5);
RoundBCA(x[4], 5);
RoundCAB(x[5], 5);
RoundABC(x[6], 5);
RoundBCA(x[7], 5);
KeySchedule();
RoundCAB(x[0], 7);
RoundABC(x[1], 7);
RoundBCA(x[2], 7);
RoundCAB(x[3], 7);
RoundABC(x[4], 7);
RoundBCA(x[5], 7);
RoundCAB(x[6], 7);
RoundABC(x[7], 7);
KeySchedule();
RoundBCA(x[0], 9);
RoundCAB(x[1], 9);
RoundABC(x[2], 9);
RoundBCA(x[3], 9);
RoundCAB(x[4], 9);
RoundABC(x[5], 9);
RoundBCA(x[6], 9);
RoundCAB(x[7], 9);
a ^= num;
b -= num2;
c += num3;
xOff = 0;
for (int i = 0; i != x.Length; i++) {
x[i] = 0;
}
}
private void ProcessLength(long bitLength)
{
x[7] = bitLength;
}
private void Finish()
{
long bitLength = byteCount << 3;
Update(1);
while (bOff != 0) {
Update(0);
}
ProcessLength(bitLength);
ProcessBlock();
}
public int DoFinal(byte[] output, int outOff)
{
Finish();
Pack.UInt64_To_LE((ulong)a, output, outOff);
Pack.UInt64_To_LE((ulong)b, output, outOff + 8);
Pack.UInt64_To_LE((ulong)c, output, outOff + 16);
Reset();
return 24;
}
public void Reset()
{
a = 81985529216486895;
b = -81985529216486896;
c = -1110518062304271993;
xOff = 0;
for (int i = 0; i != x.Length; i++) {
x[i] = 0;
}
bOff = 0;
for (int j = 0; j != m_buffer.Length; j++) {
m_buffer[j] = 0;
}
byteCount = 0;
}
public IMemoable Copy()
{
return new TigerDigest(this);
}
public void Reset(IMemoable other)
{
TigerDigest tigerDigest = (TigerDigest)other;
a = tigerDigest.a;
b = tigerDigest.b;
c = tigerDigest.c;
Array.Copy(tigerDigest.x, 0, x, 0, tigerDigest.x.Length);
xOff = tigerDigest.xOff;
Array.Copy(tigerDigest.m_buffer, 0, m_buffer, 0, tigerDigest.m_buffer.Length);
bOff = tigerDigest.bOff;
byteCount = tigerDigest.byteCount;
}
}
}