);

  LastForwardTable: array [0..255] of longword = (
    $00000063, $0000007C, $00000077, $0000007B, $000000F2, $0000006B, $0000006F, $000000C5,
    $00000030, $00000001, $00000067, $0000002B, $000000FE, $000000D7, $000000AB, $00000076,
    $000000CA, $00000082, $000000C9, $0000007D, $000000FA, $00000059, $00000047, $000000F0,
    $000000AD, $000000D4, $000000A2, $000000AF, $0000009C, $000000A4, $00000072, $000000C0,
    $000000B7, $000000FD, $00000093, $00000026, $00000036, $0000003F, $000000F7, $000000CC,
    $00000034, $000000A5, $000000E5, $000000F1, $00000071, $000000D8, $00000031, $00000015,
    $00000004, $000000C7, $00000023, $000000C3, $00000018, $00000096, $00000005, $0000009A,
    $00000007, $00000012, $00000080, $000000E2, $000000EB, $00000027, $000000B2, $00000075,
    $00000009, $00000083, $0000002C, $0000001A, $0000001B, $0000006E, $0000005A, $000000A0,
    $00000052, $0000003B, $000000D6, $000000B3, $00000029, $000000E3, $0000002F, $00000084,
    $00000053, $000000D1, $00000000, $000000ED, $00000020, $000000FC, $000000B1, $0000005B,
    $0000006A, $000000CB, $000000BE, $00000039, $0000004A, $0000004C, $00000058, $000000CF,
    $000000D0, $000000EF, $000000AA, $000000FB, $00000043, $0000004D, $00000033, $00000085,
    $00000045, $000000F9, $00000002, $0000007F, $00000050, $0000003C, $0000009F, $000000A8,
    $00000051, $000000A3, $00000040, $0000008F, $00000092, $0000009D, $00000038, $000000F5,
    $000000BC, $000000B6, $000000DA, $00000021, $00000010, $000000FF, $000000F3, $000000D2,
    $000000CD, $0000000C, $00000013, $000000EC, $0000005F, $00000097, $00000044, $00000017,
    $000000C4, $000000A7, $0000007E, $0000003D, $00000064, $0000005D, $00000019, $00000073,
    $00000060, $00000081, $0000004F, $000000DC, $00000022, $0000002A, $00000090, $00000088,
    $00000046, $000000EE, $000000B8, $00000014, $000000DE, $0000005E, $0000000B, $000000DB,
    $000000E0, $00000032, $0000003A, $0000000A, $00000049, $00000006, $00000024, $0000005C,
    $000000C2, $000000D3, $000000AC, $00000062, $00000091, $00000095, $000000E4, $00000079,
    $000000E7, $000000C8, $00000037, $0000006D, $0000008D, $000000D5, $0000004E, $000000A9,
    $0000006C, $00000056, $000000F4, $000000EA, $00000065, $0000007A, $000000AE, $00000008,
    $000000BA, $00000078, $00000025, $0000002E, $0000001C, $000000A6, $000000B4, $000000C6,
    $000000E8, $000000DD, $00000074, $0000001F, $0000004B, $000000BD, $0000008B, $0000008A,
    $00000070, $0000003E, $000000B5, $00000066, $00000048, $00000003, $000000F6, $0000000E,
    $00000061, $00000035, $00000057, $000000B9, $00000086, $000000C1, $0000001D, $0000009E,
    $000000E1, $000000F8, $00000098, $00000011, $00000069, $000000D9, $0000008E, $00000094,
    $0000009B, $0000001E, $00000087, $000000E9, $000000CE, $00000055, $00000028, $000000DF,
    $0000008C, $000000A1, $00000089, $0000000D, $000000BF, $000000E6, $00000042, $00000068,
    $00000041, $00000099, $0000002D, $0000000F, $000000B0, $00000054, $000000BB, $00000016
  );

  InverseTable: array [0..255] of longword = (
    $50A7F451, $5365417E, $C3A4171A, $965E273A, $CB6BAB3B, $F1459D1F, $AB58FAAC, $9303E34B,
    $55FA3020, $F66D76AD, $9176CC88, $254C02F5, $FCD7E54F, $D7CB2AC5, $80443526, $8FA362B5,
    $495AB1DE, $671BBA25, $980EEA45, $E1C0FE5D, $02752FC3, $12F04C81, $A397468D, $C6F9D36B,
    $E75F8F03, $959C9215, $EB7A6DBF, $DA595295, $2D83BED4, $D3217458, $2969E049, $44C8C98E,
    $6A89C275, $78798EF4, $6B3E5899, $DD71B927, $B64FE1BE, $17AD88F0, $66AC20C9, $B43ACE7D,
    $184ADF63, $82311AE5, $60335197, $457F5362, $E07764B1, $84AE6BBB, $1CA081FE, $942B08F9,
    $58684870, $19FD458F, $876CDE94, $B7F87B52, $23D373AB, $E2024B72, $578F1FE3, $2AAB5566,
    $0728EBB2, $03C2B52F, $9A7BC586, $A50837D3, $F2872830, $B2A5BF23, $BA6A0302, $5C8216ED,
    $2B1CCF8A, $92B479A7, $F0F207F3, $A1E2694E, $CDF4DA65, $D5BE0506, $1F6234D1, $8AFEA6C4,
    $9D532E34, $A055F3A2, $32E18A05, $75EBF6A4, $39EC830B, $AAEF6040, $069F715E, $51106EBD,
    $F98A213E, $3D06DD96, $AE053EDD, $46BDE64D, $B58D5491, $055DC471, $6FD40604, $FF155060,
    $24FB9819, $97E9BDD6, $CC434089, $779ED967, $BD42E8B0, $888B8907, $385B19E7, $DBEEC879,
    $470A7CA1, $E90F427C, $C91E84F8, $00000000, $83868009, $48ED2B32, $AC70111E, $4E725A6C,
    $FBFF0EFD, $5638850F, $1ED5AE3D, $27392D36, $64D90F0A, $21A65C68, $D1545B9B, $3A2E3624,
    $B1670A0C, $0FE75793, $D296EEB4, $9E919B1B, $4FC5C080, $A220DC61, $694B775A, $161A121C,
    $0ABA93E2, $E52AA0C0, $43E0223C, $1D171B12, $0B0D090E, $ADC78BF2, $B9A8B62D, $C8A91E14,
    $8519F157, $4C0775AF, $BBDD99EE, $FD607FA3, $9F2601F7, $BCF5725C, $C53B6644, $347EFB5B,
    $7629438B, $DCC623CB, $68FCEDB6, $63F1E4B8, $CADC31D7, $10856342, $40229713, $2011C684,
    $7D244A85, $F83DBBD2, $1132F9AE, $6DA129C7, $4B2F9E1D, $F330B2DC, $EC52860D, $D0E3C177,
    $6C16B32B, $99B970A9, $FA489411, $2264E947, $C48CFCA8, $1A3FF0A0, $D82C7D56, $EF903322,
    $C74E4987, $C1D138D9, $FEA2CA8C, $360BD498, $CF81F5A6, $28DE7AA5, $268EB7DA, $A4BFAD3F,
    $E49D3A2C, $0D927850, $9BCC5F6A, $62467E54, $C2138DF6, $E8B8D890, $5EF7392E, $F5AFC382,
    $BE805D9F, $7C93D069, $A92DD56F, $B31225CF, $3B99ACC8, $A77D1810, $6E639CE8, $7BBB3BDB,
    $097826CD, $F418596E, $01B79AEC, $A89A4F83, $656E95E6, $7EE6FFAA, $08CFBC21, $E6E815EF,
    $D99BE7BA, $CE366F4A, $D4099FEA, $D67CB029, $AFB2A431, $31233F2A, $3094A5C6, $C066A235,
    $37BC4E74, $A6CA82FC, $B0D090E0, $15D8A733, $4A9804F1, $F7DAEC41, $0E50CD7F, $2FF69117,
    $8DD64D76, $4DB0EF43, $544DAACC, $DF0496E4, $E3B5D19E, $1B886A4C, $B81F2CC1, $7F516546,
    $04EA5E9D, $5D358C01, $737487FA, $2E410BFB, $5A1D67B3, $52D2DB92, $335610E9, $1347D66D,
    $8C61D79A, $7A0CA137, $8E14F859, $893C13EB, $EE27A9CE, $35C961B7, $EDE51CE1, $3CB1477A,
    $59DFD29C, $3F73F255, $79CE1418, $BF37C773, $EACDF753, $5BAAFD5F, $146F3DDF, $86DB4478,
    $81F3AFCA, $3EC468B9, $2C342438, $5F40A3C2, $72C31D16, $0C25E2BC, $8B493C28, $41950DFF,
    $7101A839, $DEB30C08, $9CE4B4D8, $90C15664, $6184CB7B, $70B632D5, $745C6C48, $4257B8D0
  );

  LastInverseTable: array [0..255] of longword = (
    $00000052, $00000009, $0000006A, $000000D5, $00000030, $00000036, $000000A5, $00000038,
    $000000BF, $00000040, $000000A3, $0000009E, $00000081, $000000F3, $000000D7, $000000FB,
    $0000007C, $000000E3, $00000039, $00000082, $0000009B, $0000002F, $000000FF, $00000087,
    $00000034, $0000008E, $00000043, $00000044, $000000C4, $000000DE, $000000E9, $000000CB,
    $00000054, $0000007B, $00000094, $00000032, $000000A6, $000000C2, $00000023, $0000003D,
    $000000EE, $0000004C, $00000095, $0000000B, $00000042, $000000FA, $000000C3, $0000004E,
    $00000008, $0000002E, $000000A1, $00000066, $00000028, $000000D9, $00000024, $000000B2,
    $00000076, $0000005B, $000000A2, $00000049, $0000006D, $0000008B, $000000D1, $00000025,
    $00000072, $000000F8, $000000F6, $00000064, $00000086, $00000068, $00000098, $00000016,
    $000000D4, $000000A4, $0000005C, $000000CC, $0000005D, $00000065, $000000B6, $00000092,
    $0000006C, $00000070, $00000048, $00000050, $000000FD, $000000ED, $000000B9, $000000DA,
    $0000005E, $00000015, $00000046, $00000057, $000000A7, $0000008D, $0000009D, $00000084,
    $00000090, $000000D8, $000000AB, $00000000, $0000008C, $000000BC, $000000D3, $0000000A,
    $000000F7, $000000E4, $00000058, $00000005, $000000B8, $000000B3, $00000045, $00000006,
    $000000D0, $0000002C, $0000001E, $0000008F, $000000CA, $0000003F, $0000000F, $00000002,
    $000000C1, $000000AF, $000000BD, $00000003, $00000001, $00000013, $0000008A, $0000006B,
    $0000003A, $00000091, $00000011, $00000041, $0000004F, $00000067, $000000DC, $000000EA,
    $00000097, $000000F2, $000000CF, $000000CE, $000000F0, $000000B4, $000000E6, $00000073,
    $00000096, $000000AC, $00000074, $00000022, $000000E7, $000000AD, $00000035, $00000085,
    $000000E2, $000000F9, $00000037, $000000E8, $0000001C, $00000075, $000000DF, $0000006E,
    $00000047, $000000F1, $0000001A, $00000071, $0000001D, $00000029, $000000C5, $00000089,
    $0000006F, $000000B7, $00000062, $0000000E, $000000AA, $00000018, $000000BE, $0000001B,
    $000000FC, $00000056, $0000003E, $0000004B, $000000C6, $000000D2, $00000079, $00000020,
    $0000009A, $000000DB, $000000C0, $000000FE, $00000078, $000000CD, $0000005A, $000000F4,
    $0000001F, $000000DD, $000000A8, $00000033, $00000088, $00000007, $000000C7, $00000031,
    $000000B1, $00000012, $00000010, $00000059, $00000027, $00000080, $000000EC, $0000005F,
    $00000060, $00000051, $0000007F, $000000A9, $00000019, $000000B5, $0000004A, $0000000D,
    $0000002D, $000000E5, $0000007A, $0000009F, $00000093, $000000C9, $0000009C, $000000EF,
    $000000A0, $000000E0, $0000003B, $0000004D, $000000AE, $0000002A, $000000F5, $000000B0,
    $000000C8, $000000EB, $000000BB, $0000003C, $00000083, $00000053, $00000099, $00000061,
    $00000017, $0000002B, $00000004, $0000007E, $000000BA, $00000077, $000000D6, $00000026,
    $000000E1, $00000069, $00000014, $00000063, $00000055, $00000021, $0000000C, $0000007D
  );

procedure ExpandAESKeyForEncryption(const Key: TAESKey128; var ExpandedKey: TAESExpandedKey128);
var
  I, J: integer;
  T: longword;
  W0, W1, W2, W3: longword;
begin
  ExpandedKey[0] := PLongWord(@Key[0])^;
  ExpandedKey[1] := PLongWord(@Key[4])^;
  ExpandedKey[2] := PLongWord(@Key[8])^;
  ExpandedKey[3] := PLongWord(@Key[12])^;
  I := 0; J := 1;
  repeat
    T := (ExpandedKey[I + 3] shl 24) or (ExpandedKey[I + 3] shr 8);
    W0 := LastForwardTable[Byte(T)]; W1 := LastForwardTable[Byte(T shr 8)];
    W2 := LastForwardTable[Byte(T shr 16)]; W3 := LastForwardTable[Byte(T shr 24)];
    ExpandedKey[I + 4] := ExpandedKey[I] xor
      (W0 xor ((W1 shl 8) or (W1 shr 24)) xor
      ((W2 shl 16) or (W2 shr 16)) xor ((W3 shl 24) or (W3 shr 8))) xor Rcon[J];
    Inc(J);
    ExpandedKey[I + 5] := ExpandedKey[I + 1] xor ExpandedKey[I + 4];
    ExpandedKey[I + 6] := ExpandedKey[I + 2] xor ExpandedKey[I + 5];
    ExpandedKey[I + 7] := ExpandedKey[I + 3] xor ExpandedKey[I + 6];
    Inc(I, 4);
  until I >= 40;
end;

procedure ExpandAESKeyForEncryption(const Key: TAESKey192; var ExpandedKey: TAESExpandedKey192); overload;
var
  I, J: integer;
  T: longword;
  W0, W1, W2, W3: longword;
begin
  ExpandedKey[0] := PLongWord(@Key[0])^;
  ExpandedKey[1] := PLongWord(@Key[4])^;
  ExpandedKey[2] := PLongWord(@Key[8])^;
  ExpandedKey[3] := PLongWord(@Key[12])^;
  ExpandedKey[4] := PLongWord(@Key[16])^;
  ExpandedKey[5] := PLongWord(@Key[20])^;
  I := 0; J := 1;
  repeat
    T := (ExpandedKey[I + 5] shl 24) or (ExpandedKey[I + 5] shr 8);
    W0 := LastForwardTable[Byte(T)]; W1 := LastForwardTable[Byte(T shr 8)];
    W2 := LastForwardTable[Byte(T shr 16)]; W3 := LastForwardTable[Byte(T shr 24)];
    ExpandedKey[I + 6] := ExpandedKey[I] xor
      (W0 xor ((W1 shl 8) or (W1 shr 24)) xor
      ((W2 shl 16) or (W2 shr 16)) xor ((W3 shl 24) or (W3 shr 8))) xor Rcon[J];
    Inc(J);
    ExpandedKey[I + 7] := ExpandedKey[I + 1] xor ExpandedKey[I + 6];
    ExpandedKey[I + 8] := ExpandedKey[I + 2] xor ExpandedKey[I + 7];
    ExpandedKey[I + 9] := ExpandedKey[I + 3] xor ExpandedKey[I + 8];
    ExpandedKey[I + 10] := ExpandedKey[I + 4] xor ExpandedKey[I + 9];
    ExpandedKey[I + 11] := ExpandedKey[I + 5] xor ExpandedKey[I + 10];
    Inc(I, 6);
  until I >= 46;
end;

procedure ExpandAESKeyForEncryption(const Key: TAESKey256; var ExpandedKey: TAESExpandedKey256); overload;
var
  I, J: integer;
  T: longword;
  W0, W1, W2, W3: longword;
begin
  ExpandedKey[0] := PLongWord(@Key[0])^;
  ExpandedKey[1] := PLongWord(@Key[4])^;
  ExpandedKey[2] := PLongWord(@Key[8])^;
  ExpandedKey[3] := PLongWord(@Key[12])^;
  ExpandedKey[4] := PLongWord(@Key[16])^;
  ExpandedKey[5] := PLongWord(@Key[20])^;
  ExpandedKey[6] := PLongWord(@Key[24])^;
  ExpandedKey[7] := PLongWord(@Key[28])^;
  I := 0; J := 1;
  repeat
    T := (ExpandedKey[I + 7] shl 24) or (ExpandedKey[I + 7] shr 8);
    W0 := LastForwardTable[Byte(T)]; W1 := LastForwardTable[Byte(T shr 8)];
    W2 := LastForwardTable[Byte(T shr 16)]; W3 := LastForwardTable[Byte(T shr 24)];
    ExpandedKey[I + 8] := ExpandedKey[I] xor
      (W0 xor ((W1 shl 8) or (W1 shr 24)) xor
      ((W2 shl 16) or (W2 shr 16)) xor ((W3 shl 24) or (W3 shr 8))) xor Rcon[J];
    Inc(J);
    ExpandedKey[I + 9] := ExpandedKey[I + 1] xor ExpandedKey[I + 8];
    ExpandedKey[I + 10] := ExpandedKey[I + 2] xor ExpandedKey[I + 9];
    ExpandedKey[I + 11] := ExpandedKey[I + 3] xor ExpandedKey[I + 10];
    W0 := LastForwardTable[Byte(ExpandedKey[I + 11])];
    W1 := LastForwardTable[Byte(ExpandedKey[I + 11] shr 8)];
    W2 := LastForwardTable[Byte(ExpandedKey[I + 11] shr 16)];
    W3 := LastForwardTable[Byte(ExpandedKey[I + 11] shr 24)];
    ExpandedKey[I + 12] := ExpandedKey[I + 4] xor
      (W0 xor ((W1 shl 8) or (W1 shr 24)) xor
      ((W2 shl 16) or (W2 shr 16)) xor ((W3 shl 24) or (W3 shr 8)));
    ExpandedKey[I + 13] := ExpandedKey[I + 5] xor ExpandedKey[I + 12];
    ExpandedKey[I + 14] := ExpandedKey[I + 6] xor ExpandedKey[I + 13];
    ExpandedKey[I + 15] := ExpandedKey[I + 7] xor ExpandedKey[I + 14];
    Inc(I, 8);
  until I >= 52;
end;

procedure EncryptAES(const InBuf: TAESBuffer; const Key: TAESExpandedKey128;
  var OutBuf: TAESBuffer); 
var