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C# / CSharp Open Source » Business Application » DC 
DC » DCSharp » Security » Cryptography » TigerManaged.cs
using System;
using System.Security.Cryptography;
using System.Text;

namespace DCSharp.Security.Cryptography{
  public class TigerManaged : Tiger
  {
    #region Fields
    private long a;
    private long b;
    private long c;

    private long[] block;
    private const int BLOCKSIZE = 64;
    private byte[] buf;

    private long lLen;
    private int nBufPos;
    private const int PASSES = 3;
    private static long[] T;
    #endregion

    static TigerManaged ()

    {
      long[] _Vb_t_array_0 = null;
      _Vb_t_array_0 = new long[] 
      {
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        -9066842030330493037L, 5670390740934713304L, 2219071780988037499L, 7008521987288882964L, 6028345117330418825L, -7500176903196747008L, 7071075452076274675L, -1604175089662029304L, 1445978213955986826L, -7979034942316814172L, 
        951333080223670799L, 6099155138413436065L, -4305900099056973791L, -6236769450809946705L, -2912898243239114769L, -2065740773420267803L, -3827177893057145596L, 1340472571717533606L, -3648363291767490877L, -5756567784146095673L, 
        4461163794677446508L, -5848717005041324781L, 3341940384398866564L, -4882598382547103543L, 3829921822543532494L, 899996630714791418L, 6478536468284266291L, 2994597028103565543L, 6124895672834828926L, -8376542604899771579L, 
        -4412652237062246342L, -7724700941812371646L, 728866099714851926L, 339635816873858970L, -1153572816294167456L, -592215260546165052L, -7150089944179092253L, 8700134485486622004L, -5552633324984327062L, -1298517758115136471L, 
        8749621007278605595L, -6133576477421907076L, 4199955888901663150L, -5341432795218012713L, -239890188217778377L, 8106773277103211697L, -2229320058079270256L, 5930619164422717276L, 4368075505682949467L, 4623369983466747106L, 
        8403817438537116875L, -5327756068839670070L, 1151085119119418028L, 6933250016240323664L, 6814675599201764477L, -2995490164984896514L, 5778917359701360712L, -7334472845550608018L, -9212347808668562614L, -7786744047088363785L, 
        4025584697920591189L, 5446500518121291045L, -7866665254384488512L, -352887593087136842L, 8290028954029701554L, -9087549732707247512L, 7234639242841923679L, 2860911103167493259L, -3716770017321781837L, 7444204691177324181L, 
        8012224255291120002L, 6549509778060988165L, -4656265058823564969L, -1532696805485516055L, 4993489137437819341L, 4727924503904151836L, -3180601338503688336L, 7858325008468642462L, 6561287832113134677L, 1893413629145602549L, 
        -6205320776685678598L, 7334764389497132503L, 421942495471316930L, -9085229951450268347L, 5948965432456907277L, -6872877502453521409L, 4831763938021002582L, -4272888574428519313L, 5678704711006605406L, 4536654317168965104L, 
        802439540090739142L, 1728614842704535657L, 7852250862810361152L, -2970083550513149273L, 6999787169451700297L, 327545298748531618L, -2764213178345403342L, 9213801181845131435L, -5950018878971805109L, -2186876610533351532L, 
        -3100863505161590557L, -194921935069456237L, 2629011484744925146L, 679658461659738748L, -3068808746888436091L, 2845612796809381245L, -7722098226173915145L, 7273530125705028225L, 4410076014410041819L, -2304212329100317967L, 
        -45936371244098582L, -5712723046817425393L, 8922873767131958175L, -3382299200423854708L, -3236816455951139535L, -4036747678298392505L, 5226125132195873799L, 2940247444995640068L, -4418018165041970817L, 6671397049608501367L, 
        8821388386505911040L, -3580187736799586652L, -1447046360908978430L, 2147098610462912262L, -1956265881574637814L, -2856917834249223582L, 5141735866072457044L, 3265027362719053310L, -6450920645962515936L, 6017965846669640613L, 
        4287051124723328232L, 8655371236021312991L, -1156847972119148173L, 2365060307249772354L, 1630631832073154105L, 1828719980936758421L, 2674037562503248056L, -7295616781251116690L, -1363141094472255887L, 204405347605452144L, 
        5797523068258732423L, 8122903338174012641L, 8739821670855295734L, 961841682317282412L, 3487881148722869326L, -7995384159388863717L, 7665614591556333409L, -7831409025227614873L, -822907162794399275L, -1691135090558933875L, 
        3797048810173566205L, -2578904300750297763L, -3410711173298709536L, 577633178325057199L, -7379212936790430923L, -9035774148364232240L, 2754939666238358593L, 8444132705799138470L, -7894221632442939675L, 3065464070595795438L, 
        -6610449357786147779L, 3184382822055416328L, 5740274767717360273L, 6179930651821454089L, -4826152258144849421L, 5115645765347262247L, 4602739923119569497L, -3465801151231271281L, -6359599548771540712L, -1926152657970122275L, 
        -8468989295385802946L, -6500580506154635033L, 4125629484990072616L, -6834670983768857044L, -4845179353893108027L, 4230689665262407186L, -1849684427061896393L, 9047540561879224854L, 1112218670439199625L, 8426162753992594376L, 
        -5990769681480860131L, -2503790423972405993L, 4028912247909671416L, -409156412951274838L, -8377831951645714695L, -1152570669068554652L, -6327418252815316840L, -3725559206061705268L, 1964465731879646024L, -2441760721249263597L, 
        6946242362685775318L, -3298979752616086841L, -7236283555339513389L, -1419193050620496778L, -93735727476260563L, -5905399081030416230L, 2507248404937789251L, 7581261321693772141L, -8836566033099333598L, 520172056875071564L, 
        3738403388662150470L, -2357506837776452040L, -5002739851233418934L, 930169001927683533L, 6889748805645999668L, -1031349426815687751L, 7941113837267854943L, -1243211017071393764L, -2154628650105719635L, 6332043450707792835L, 
        3386824618901547762L, 7130458179308482168L, 1271522336860346025L, -997034324337437613L, 4823850509807911142L, 3107332511049695348L, 5437793788182680416L, -8315628002795417155L, 1494290439970088554L, -8609438560643873897L, 
        -8207953325454440687L, -5432621302919780015L, 1159256241058966379L, 1026141471931805870L, -8215608786054685932L, -609691062749569444L, 7511556330643118785L, -3915792337899679783L, 3932170512244996561L, 6834333685245251200L, 
        4355290964656419152L, 6487547078612259600L, 6267880520331323438L, -1545475867304599653L, 8190919284549556346L, 3366895789332200348L, 2444540809879438627L, 6459524513146455969L, 4077716903750958194L, -6168929569432701476L, 
        -6973483665415634802L, -5197441416039796052L, 7734160491610189202L, 7910254887717195099L, 3836881802794822270L, 8311228008842563790L, 730509642500215940L, -650400159804944995L, -5124223765383482859L, 3579688877020158541L, 
        8591780283260295173L, 5028082178778891827L, -498814760953987530L, -2709709455026140056L, 5487541034902828271L, 8530400576707172340L, -7604535187505054453L, -869656751120750718L, 4656569414526204412L, 491061932033469878L, 
        8035458231926703496L, 137019260109594401L, 7421708309958176805L, 8223709417363553275L, 5401705824239018731L, -7162608250562934562L, 5308870500428712900L, -5508949737295341638L, 1376856236535589493L, -5655908917112005032L, 
        -7100674984259216372L, 1332977380922036690L, 3015788518022419172L, -6718854486329987908L, 6396540069380292132L, 2034188120276215631L, -1655134238111203034L, -509741179510489141L, 3623665942510192329L, -9164935270648710301L, 
        1765784450088366494L, 5837777785993897047L, 1564973338399864744L, -2605395199060435761L, 4964475598524693274L, -5312043978489901415L, 6706291041494563888L, -789946623649963734L, -8091303779971721549L, 7456716478970921562L, 
        -335263357675197259L, -8515348892102079999L, -7048796562806032069L, -233028078259189719L, 284725780453796946L, -3832073186324226638L, -4921235094493811069L, -5089093504863659344L, -5607539644671350465L, -8911681616096439592L, 
        -4743899514573401058L, -7664321526450198170L, -4599281686566632149L, 2560491659082246267L, 8971180328015050686L, 2265540171276805379L, 6093561527083620308L, 12169565841013306L, 9128413284208255679L, -4178722056535276608L, 
        -8960148414521589626L, -4216952774774654326L, -5374970407177951367L, -6668788646589711127L, -2946910590031425822L, -8674853389405194592L, -7535980417822448849L, -6115357923114297461L, -8065837346967928004L, -7487037274649424496L, 
        -2061373546992596293L, -5783192355322733388L, 7153300451507295513L, -8779488031786375734L, 2187906506867626476L, 5612681432830855607L, -4653220181978985551L, 4688837593722596333L, -3815667051463559517L, -1779743783662362556L, 
        -3650491565905270770L, -4529053496248414107L, -4021111997381021802L, -4350414089199835873L };
      TigerManaged.T = _Vb_t_array_0;
    }

    public TigerManaged () : base()

    {
      this.buf = new byte[64];
      this.block = new long[8];
      this.Initialize ();
    }

    public override bool CanTransformMultipleBlocks
    {
      get  { return true;  }
    }

    private void Compress ()
    {
      long aa = 0L;
      long bb = 0L;
      long[] block = null;
      long cc = 0L;
      aa = this.a;
      bb = this.b;
      cc = this.c;
      block = this.block;
      this.RoundABC (block[0], 5);
      this.RoundBCA (block[1], 5);
      this.RoundCAB (block[2], 5);
      this.RoundABC (block[3], 5);
      this.RoundBCA (block[4], 5);
      this.RoundCAB (block[5], 5);
      this.RoundABC (block[6], 5);
      this.RoundBCA (block[7], 5);
      this.Schedule (block);
      this.RoundCAB (block[0], 7);
      this.RoundABC (block[1], 7);
      this.RoundBCA (block[2], 7);
      this.RoundCAB (block[3], 7);
      this.RoundABC (block[4], 7);
      this.RoundBCA (block[5], 7);
      this.RoundCAB (block[6], 7);
      this.RoundABC (block[7], 7);
      this.Schedule (block);
      this.RoundBCA (block[0], 9);
      this.RoundCAB (block[1], 9);
      this.RoundABC (block[2], 9);
      this.RoundBCA (block[3], 9);
      this.RoundCAB (block[4], 9);
      this.RoundABC (block[5], 9);
      this.RoundBCA (block[6], 9);
      this.RoundCAB (block[7], 9);
      this.a ^= aa;
      this.b -= bb;
      this.c += cc;
    }

    protected override void HashCore (byte[] data, int nStart, int nSize)
    {
      byte[] buf = null;
      int nBufPos = 0;
      int nEnd = 0;
      int nToCopy = 0;
      this.lLen += ((long) nSize);
      buf = this.buf;
      nBufPos = this.nBufPos;
      nEnd = (nStart + nSize);
      while (nStart < nEnd)
      {
        nToCopy = ((int) (64 - nBufPos));
        if (nToCopy > nSize)
        {
          nToCopy = nSize;
        }
        Array.Copy (((Array) data), nStart, ((Array) buf), nBufPos, nToCopy);
        nStart += nToCopy;
        nBufPos += nToCopy;
        nSize -= nToCopy;
        if (64 <= nBufPos)
        {
          this.ProcessBlock ();
          nBufPos = 0;
          continue;
        }
        break;
      }
      this.nBufPos = nBufPos;
    }

    protected override byte[] HashFinal ()
    {
      byte[] buf = null;
      int nBufPos = 0;
      byte[] result = null;
      nBufPos = this.nBufPos;
      buf = this.buf;
      buf[nBufPos] = ((byte) 1);
      nBufPos++;
      if (56 <= nBufPos)
      {
        Array.Clear (((Array) buf), nBufPos, ((int) (64 - nBufPos)));
        this.ProcessBlock ();
        nBufPos = 0;
      }
      Array.Clear (((Array) buf), nBufPos, ((int) ((64 - nBufPos) - 8)));
      TigerManaged.LongToBytes (((long) (this.lLen << 3)), buf, 56);
      this.ProcessBlock ();
      result = new byte[24];
      TigerManaged.LongToBytes (this.a, result, 0);
      TigerManaged.LongToBytes (this.b, result, 8);
      TigerManaged.LongToBytes (this.c, result, 16);
      return result;
    }

    public override void Initialize ()
    {
      this.a = 81985529216486895L;
      this.b = -81985529216486896L;
      this.c = -1110518062304271993L;
      this.nBufPos = 0;
      this.lLen = 0L;
    }

    static void LongToBytes (long lVal, byte[] buf, int nIdx)
    {
      int nEnd = 0;
      nEnd = (nIdx + 8);
      while (nIdx < nEnd)
      {
        buf[nIdx] = ((byte) (lVal & 255L));
        lVal = ((long) (lVal >> 8));
        nIdx++;
      }
    }

    private void ProcessBlock ()
    {
      long[] block = null;
      byte[] buf = null;
      int nI = 0;
      int nPos = 0;
      nPos = 0;
      block = this.block;
      buf = this.buf;
      while (nPos < 64)
      {
        block[nI] = ((long) ((((((((((long) buf[(nPos + 7)]) << 56) | ((((long) buf[(nPos + 6)]) & 255L) << 48)) | ((((long) buf[(nPos + 5)]) & 255L) << 40)) | ((((long) buf[(nPos + 4)]) & 255L) << 32)) | ((((long) buf[(nPos + 3)]) & 255L) << 24)) | ((((long) buf[(nPos + 2)]) & 255L) << 16)) | ((((long) buf[(nPos + 1)]) & 255L) << 8)) | (((long) buf[nPos]) & 255L)));
        nPos += 8;
        nI++;
      }
      this.Compress ();
    }

    private void RoundABC (long x, int mul)
    {
      long c = 0L;
      int ch = 0;
      int cl = 0;
      long[] T = null;
      T = TigerManaged.T;
      c = this.c;
      c ^= x;
      ch = ((int) (c >> 32));
      cl = ((int) c);
      this.a -= (((T[(cl & 255)] ^ T[((int) (((cl >> 16) & 255) + 256))]) ^ T[((ch & 255) + 512)]) ^ T[((int) (((ch >> 16) & 255) + 768))]);
      this.b += (((T[(((cl >> 8) & 255) + 768)] ^ T[((int) (((cl >> 24) & 255) + 512))]) ^ T[(((ch >> 8) & 255) + 256)]) ^ T[((int) ((ch >> 24) & 255))]);
      this.b *= ((long) mul);
      this.c = c;
    }

    private void RoundBCA (long x, int mul)
    {
      long a = 0L;
      int ah = 0;
      int al = 0;
      long[] T = null;
      T = TigerManaged.T;
      a = this.a;
      a ^= x;
      ah = ((int) (a >> 32));
      al = ((int) a);
      this.b -= (((T[(al & 255)] ^ T[((int) (((al >> 16) & 255) + 256))]) ^ T[((ah & 255) + 512)]) ^ T[((int) (((ah >> 16) & 255) + 768))]);
      this.c += (((T[(((al >> 8) & 255) + 768)] ^ T[((int) (((al >> 24) & 255) + 512))]) ^ T[(((ah >> 8) & 255) + 256)]) ^ T[((int) ((ah >> 24) & 255))]);
      this.c *= ((long) mul);
      this.a = a;
    }

    private void RoundCAB (long x, int mul)
    {
      long b = 0L;
      int bh = 0;
      int bl = 0;
      long[] T = null;
      T = TigerManaged.T;
      b = this.b;
      b ^= x;
      bh = ((int) (b >> 32));
      bl = ((int) b);
      this.c -= (((T[(bl & 255)] ^ T[((int) (((bl >> 16) & 255) + 256))]) ^ T[((bh & 255) + 512)]) ^ T[((int) (((bh >> 16) & 255) + 768))]);
      this.a += (((T[(((bl >> 8) & 255) + 768)] ^ T[((int) (((bl >> 24) & 255) + 512))]) ^ T[(((bh >> 8) & 255) + 256)]) ^ T[((int) ((bh >> 24) & 255))]);
      this.a *= ((long) mul);
      this.b = b;
    }

    private void Schedule (long[] x)
    {
      int _Vb_t_i4_0 = 0;
      _Vb_t_i4_0 = 0;
      x[_Vb_t_i4_0] -= (x[7] ^ -6510615555426900571L);
      x[1] = (x[1] ^ x[0]);
      _Vb_t_i4_0 = 2;
      x[_Vb_t_i4_0] += x[1];
      _Vb_t_i4_0 = 3;
      x[_Vb_t_i4_0] -= ((long) (x[2] ^ ((~ x[1]) << 19)));
      x[4] = (x[4] ^ x[3]);
      _Vb_t_i4_0 = 5;
      x[_Vb_t_i4_0] += x[4];
      _Vb_t_i4_0 = 6;
      x[_Vb_t_i4_0] -= ((long) (x[5] ^ (((~ x[4]) >> 23) & 2199023255551L)));
      x[7] = (x[7] ^ x[6]);
      _Vb_t_i4_0 = 0;
      x[_Vb_t_i4_0] += x[7];
      _Vb_t_i4_0 = 1;
      x[_Vb_t_i4_0] -= ((long) (x[0] ^ ((~ x[7]) << 19)));
      x[2] = (x[2] ^ x[1]);
      _Vb_t_i4_0 = 3;
      x[_Vb_t_i4_0] += x[2];
      _Vb_t_i4_0 = 4;
      x[_Vb_t_i4_0] -= ((long) (x[3] ^ (((~ x[2]) >> 23) & 2199023255551L)));
      x[5] = (x[5] ^ x[4]);
      _Vb_t_i4_0 = 6;
      x[_Vb_t_i4_0] += x[5];
      _Vb_t_i4_0 = 7;
      x[_Vb_t_i4_0] -= (x[6] ^ 81985529216486895L);
    }

    public static bool SelfTest ()
    {
      ASCIIEncoding enc = null;
      byte[] hash = null;
      int nI = 0;
      string TEST_DATA = null;
      byte[] TEST_HASH = null;
      Tiger tg = null;
      int _Vb_t_i4_0 = 0;
      byte[] _Vb_t_array_0 = null;
      TEST_DATA = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
      _Vb_t_array_0 = new byte[] { ((byte) 15), ((byte) 123), ((byte) 249), ((byte) 161), ((byte) 155), ((byte) 156), ((byte) 88), ((byte) 242), ((byte) 183), ((byte) 97), 
                       ((byte) 13), ((byte) 247), ((byte) 232), ((byte) 79), ((byte) 10), ((byte) 195), ((byte) 167), ((byte) 28), ((byte) 99), ((byte) 30), 
                       ((byte) 123), ((byte) 83), ((byte) 247), ((byte) 142) };
      TEST_HASH = _Vb_t_array_0;
      tg = new TigerManaged ();
      tg.Initialize ();
      enc = new ASCIIEncoding ();
      hash = tg.ComputeHash (enc.GetBytes (TEST_DATA));
      if (hash.Length != TEST_HASH.Length)
      {
        return false;
      }
      _Vb_t_i4_0 = (TEST_HASH.Length - 1);
      for (nI = 0; (nI <= _Vb_t_i4_0); nI++)
      {
        if (hash[nI] != TEST_HASH[nI])
        {
          return false;
        }
      }
      return true;
    }

  }
}
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