using System; using System.Text; namespace Uber.Util { public class HabboHexRC4 { /* Class written by Nillus based on V8 class from Sulake * V7 key extracted by Mike * Temporarily 'init' fix by Mike * <3 */ #region Static fields private static readonly byte[] PRIVATE_KEY = { 44, 214, 122, 91, 114, 79, 16, 141, 115, 110, 207, 216, 238, 65, 59, 50, 186, 70, 128, 248, 107, 12, 33, 247, 66, 79, 53, 216, 74, 81, 145, 249, 179, 111, 233, 56, 49, 92, 123, 162, 26, 46, 182, 96, 208, 93, 114, 170, 255, 19, 164, 208, 79, 91, 241, 128, 158, 25, 252, 194, 217, 20, 22, 44, 1, 253, 45, 91, 113, 89, 203, 80, 34, 112, 99, 82, 243, 8, 90, 240, 39, 17, 230, 232, 80, 180, 173, 164, 112, 163, 217, 155, 170, 41, 187, 156, 213, 199, 176, 180, 180, 236, 167, 128, 31, 155, 210, 208, 55, 198, 5, 243, 27, 208, 78, 13, 142, 64, 80, 21, 18, 19, 175, 252, 126, 194, 11, 190, 99, 94, 184, 248, 167, 77, 45, 5, 141, 128, 72, 42, 45, 107, 88, 140, 147, 30, 248, 243, 208, 82, 137, 181, 69, 177, 128, 216, 25, 3, 239, 179, 160, 159, 129, 135, 23, 62, 192, 90, 91, 172, 119, 255, 135, 39, 78, 216, 12, 188, 45, 204, 93, 54, 30, 165, 129, 178, 151, 253, 92, 31, 196, 126, 4, 72, 182, 180, 216, 144, 78, 255, 185, 228, 134, 92, 103, 141, 2, 144, 123, 161, 101, 187, 145, 187, 171, 62, 21, 244, 17, 231, 203, 120, 176, 87, 150, 89, 244, 7, 29, 21, 235, 165, 86, 125, 184, 90, 232, 232, 145, 15, 198, 165, 103, 12, 245, 177, 151, 29, 45, 26, 184, 91, 20, 16, 231, 174, 237, 207, 165, 251, 114, 185, 245, 68, 82, 116, 216, 0, 203, 89, 234, 174, 100, 220, 60, 42, 60, 103, 17, 93, 208, 72, 242, 116, 148, 84, 230, 115, 56, 138, 134, 107, 199, 17, 73, 58, 75, 187, 200, 253, 141, 249, 246, 74, 201, 166, 194, 156, 72, 221, 20, 6, 91, 191, 243, 100, 3, 113, 79, 59, 175, 94, 112, 81, 69, 166, 145, 89, 163, 111, 180, 110, 146, 156, 43, 206, 248, 22, 188, 27, 123, 152, 65, 136, 212, 185, 83, 104, 162, 69, 21, 208, 116, 78, 193, 2, 179, 222, 109, 66, 75, 56, 46, 21, 105, 140, 236, 13, 78, 58, 30, 55, 114, 228, 96, 156, 89, 179, 116, 30, 63, 7, 52, 10, 182, 25, 87, 29, 166, 75, 64, 89, 30, 110, 40, 50, 121, 107, 44, 151, 246, 147, 131, 39, 105, 227, 58, 66, 56, 82, 107, 73, 91, 133, 210, 202, 174, 56, 108, 29, 117, 109, 128, 103, 237, 227, 13, 138, 177, 180, 146, 142, 82, 83, 115, 194, 148, 62, 74, 92, 154, 95, 194, 104, 216, 2, 166, 59, 150, 137, 164, 49, 189, 33, 236, 46, 82, 169, 73, 77, 177, 81, 67, 98, 181, 116, 49, 76, 97, 204, 227, 29, 203, 113, 110, 242, 255, 140, 46, 204, 144, 39, 234, 167, 30, 150, 110, 219, 138, 136, 88, 12, 179, 71, 23, 150, 233, 80, 217, 244, 248, 111, 65, 255, 69, 217, 55, 49, 43, 228, 225, 10, 123, 71, 41, 173, 7, 15, 194, 8, 87, 209, 75, 212, 179, 144, 151, 48, 134, 47, 109, 212, 8, 24, 66, 102, 198, 211, 35, 184, 154, 76, 147, 170, 90, 247, 53, 31, 164, 5, 189, 12, 208, 99, 185, 52, 74, 154, 137, 235, 112, 132, 5, 16, 65, 124, 87, 109, 83, 170, 37, 20, 88, 134, 2, 86, 218, 169, 222, 128, 202, 28, 87, 81, 154, 199, 124, 239, 130, 47, 88, 219, 61, 97, 18, 95, 81, 144, 123, 64, 49, 239, 24, 87, 134, 24, 102, 230, 169, 145, 83, 11, 126, 166, 230, 149, 31, 164, 94, 197, 27, 225, 35, 17, 24, 241, 140, 17, 42, 10, 40, 124, 217, 114, 116, 252, 232, 55, 77, 88, 75, 5, 48, 180, 220, 218, 124, 97, 177, 184, 192, 205, 59, 54, 89, 152, 79, 6, 64, 29, 167, 155, 62, 14, 197, 181, 66, 142, 153, 91, 230, 43, 96, 110, 122, 187, 235, 209, 190, 241, 128, 50, 23, 53, 114, 43, 111, 106, 99, 15, 232, 115, 101, 210, 234, 245, 238, 164, 56, 123, 94, 125, 223, 97, 210, 151, 91, 204, 4, 72, 140, 41, 143, 19, 93, 212, 153, 102, 182, 243, 102, 93, 214, 32, 68, 236, 146, 92, 168, 99, 46, 150, 249, 34, 177, 203, 105, 126, 129, 43, 156, 166, 3, 168, 43, 81, 183, 131, 168, 111, 131, 157, 155, 195, 195, 177, 47, 180, 82, 61, 225, 62, 150, 176, 212, 191, 129, 117, 98, 72, 173, 192, 36, 203, 15, 224, 254, 52, 127, 174, 231, 38, 213, 239, 120, 52, 178, 101, 97, 132, 130, 144, 152, 251, 226, 90, 18, 233, 74, 41, 88, 28, 17, 58, 177, 84, 226, 119, 241, 25, 192, 7, 157, 125, 170, 188, 191, 186, 75, 97, 225, 115, 184, 100, 168, 133, 0, 220, 95, 160, 242, 14, 185, 219, 214, 108, 157, 142, 32, 135, 69, 86, 64, 90, 236, 179, 137, 64, 128, 214, 63, 132, 152, 177, 167, 158, 8, 122, 139, 89, 115, 11, 27, 85, 94, 45, 12, 164, 18, 169, 213, 74, 196, 61, 55, 60, 238, 33, 77, 181, 88, 166, 61, 96, 152, 139, 209, 42, 223, 203, 149, 25, 93, 71, 132, 40, 77, 31, 187, 168, 88, 210, 106, 251, 181, 29, 15, 158, 194, 183, 176, 230, 91, 2, 124, 174, 86, 165, 57, 108, 191, 227, 106, 164, 159, 110, 35, 205, 248, 254, 105, 129, 25, 77, 6, 164, 93, 176, 192, 205, 26, 96, 109, 191, 35, 239, 46, 124, 53, 208, 221, 175, 169, 246, 68, 228, 158, 39, 221, 66, 234, 170, 154, 6, 192, 132, 25, 6, 168, 169, 26, 251, 183, 23, 204, 192, 34, 96, 126, 20, 183, 135, 20, 223, 115, 137, 254, 247, 13, 71, 7, 176, 162, 184, 184, 255, 128, 229, 236, 107, 42, 80, 68, 112, 127, 4, 57, 89, 26, 78, 251, 177, 21, 151, 224, 26, 227, 112, 78, 240, 11, 247, 87, 103 }; private static readonly char[] HEXALPHABET_CHARS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; #endregion #region Instance fields private byte i; private byte j; private byte[] mTable; #endregion #region Constructor public HabboHexRC4(string sPublicKey) { int iKeyHash = CalculateKeyHash(sPublicKey); Initialize(iKeyHash); } #endregion #region Methods public void Initialize(int iKeyHash) { // Reset indexes and table this.i = 0; this.j = 0; mTable = new byte[256]; mTable[0] = 210; mTable[1] = 13; mTable[2] = 16; mTable[3] = 171; mTable[4] = 150; mTable[5] = 141; mTable[6] = 29; mTable[7] = 249; mTable[8] = 134; mTable[9] = 233; mTable[10] = 237; mTable[11] = 56; mTable[12] = 236; mTable[13] = 129; mTable[14] = 136; mTable[15] = 54; mTable[16] = 41; mTable[17] = 64; mTable[18] = 73; mTable[19] = 240; mTable[20] = 187; mTable[21] = 113; mTable[22] = 170; mTable[23] = 35; mTable[24] = 196; mTable[25] = 38; mTable[26] = 93; mTable[27] = 60; mTable[28] = 30; mTable[29] = 46; mTable[30] = 189; mTable[31] = 8; mTable[32] = 192; mTable[33] = 94; mTable[34] = 160; mTable[35] = 133; mTable[36] = 231; mTable[37] = 44; mTable[38] = 167; mTable[39] = 39; mTable[40] = 177; mTable[41] = 70; mTable[42] = 88; mTable[43] = 152; mTable[44] = 162; mTable[45] = 62; mTable[46] = 247; mTable[47] = 53; mTable[48] = 72; mTable[49] = 111; mTable[50] = 235; mTable[51] = 77; mTable[52] = 204; mTable[53] = 103; mTable[54] = 74; mTable[55] = 191; mTable[56] = 78; mTable[57] = 118; mTable[58] = 241; mTable[59] = 6; mTable[60] = 71; mTable[61] = 203; mTable[62] = 224; mTable[63] = 207; mTable[64] = 9; mTable[65] = 232; mTable[66] = 99; mTable[67] = 175; mTable[68] = 219; mTable[69] = 107; mTable[70] = 142; mTable[71] = 185; mTable[72] = 79; mTable[73] = 43; mTable[74] = 40; mTable[75] = 148; mTable[76] = 181; mTable[77] = 125; mTable[78] = 172; mTable[79] = 21; mTable[80] = 137; mTable[81] = 200; mTable[82] = 27; mTable[83] = 174; mTable[84] = 109; mTable[85] = 126; mTable[86] = 85; mTable[87] = 59; mTable[88] = 102; mTable[89] = 108; mTable[90] = 28; mTable[91] = 97; mTable[92] = 75; mTable[93] = 0; mTable[94] = 4; mTable[95] = 120; mTable[96] = 163; mTable[97] = 153; mTable[98] = 157; mTable[99] = 229; mTable[100] = 246; mTable[101] = 124; mTable[102] = 145; mTable[103] = 190; mTable[104] = 63; mTable[105] = 164; mTable[106] = 154; mTable[107] = 96; mTable[108] = 52; mTable[109] = 222; mTable[110] = 24; mTable[111] = 131; mTable[112] = 92; mTable[113] = 47; mTable[114] = 214; mTable[115] = 86; mTable[116] = 143; mTable[117] = 138; mTable[118] = 188; mTable[119] = 206; mTable[120] = 161; mTable[121] = 14; mTable[122] = 115; mTable[123] = 132; mTable[124] = 117; mTable[125] = 144; mTable[126] = 158; mTable[127] = 104; mTable[128] = 69; mTable[129] = 135; mTable[130] = 18; mTable[131] = 165; mTable[132] = 228; mTable[133] = 1; mTable[134] = 61; mTable[135] = 50; mTable[136] = 166; mTable[137] = 87; mTable[138] = 83; mTable[139] = 182; mTable[140] = 234; mTable[141] = 23; mTable[142] = 105; mTable[143] = 49; mTable[144] = 225; mTable[145] = 230; mTable[146] = 2; mTable[147] = 213; mTable[148] = 159; mTable[149] = 238; mTable[150] = 10; mTable[151] = 57; mTable[152] = 51; mTable[153] = 195; mTable[154] = 227; mTable[155] = 37; mTable[156] = 155; mTable[157] = 95; mTable[158] = 253; mTable[159] = 173; mTable[160] = 205; mTable[161] = 15; mTable[162] = 89; mTable[163] = 116; mTable[164] = 98; mTable[165] = 7; mTable[166] = 146; mTable[167] = 194; mTable[168] = 19; mTable[169] = 33; mTable[170] = 201; mTable[171] = 180; mTable[172] = 3; mTable[173] = 55; mTable[174] = 168; mTable[175] = 42; mTable[176] = 184; mTable[177] = 100; mTable[178] = 84; mTable[179] = 123; mTable[180] = 90; mTable[181] = 198; mTable[182] = 67; mTable[183] = 183; mTable[184] = 149; mTable[185] = 119; mTable[186] = 110; mTable[187] = 248; mTable[188] = 186; mTable[189] = 58; mTable[190] = 34; mTable[191] = 221; mTable[192] = 81; mTable[193] = 80; mTable[194] = 20; mTable[195] = 106; mTable[196] = 91; mTable[197] = 244; mTable[198] = 216; mTable[199] = 66; mTable[200] = 197; mTable[201] = 151; mTable[202] = 179; mTable[203] = 68; mTable[204] = 112; mTable[205] = 122; mTable[206] = 255; mTable[207] = 12; mTable[208] = 114; mTable[209] = 211; mTable[210] = 147; mTable[211] = 208; mTable[212] = 209; mTable[213] = 242; mTable[214] = 199; mTable[215] = 217; mTable[216] = 82; mTable[217] = 251; mTable[218] = 243; mTable[219] = 121; mTable[220] = 223; mTable[221] = 193; mTable[222] = 45; mTable[223] = 218; mTable[224] = 128; mTable[225] = 101; mTable[226] = 76; mTable[227] = 178; mTable[228] = 22; mTable[229] = 202; mTable[230] = 130; mTable[231] = 139; mTable[232] = 245; mTable[233] = 48; mTable[234] = 127; mTable[235] = 36; mTable[236] = 17; mTable[237] = 226; mTable[238] = 140; mTable[239] = 26; mTable[240] = 156; mTable[241] = 176; mTable[242] = 25; mTable[243] = 254; mTable[244] = 239; mTable[245] = 11; mTable[246] = 31; mTable[247] = 32; mTable[248] = 250; mTable[249] = 215; mTable[250] = 169; mTable[251] = 212; mTable[252] = 5; mTable[253] = 65; mTable[254] = 252; mTable[255] = 220; } public byte MixTable() { // Re-calculate table fields this.i = (byte)((this.i + 1) % 256); this.j = (byte)((j + mTable[i]) % 256); // Swap table fields byte bSwap = mTable[this.i]; mTable[this.i] = mTable[this.j]; mTable[this.j] = bSwap; return mTable[(mTable[this.i] + mTable[this.j]) % 256]; } public byte[] Encipher(byte[] Data) { byte[] Result = new byte[Data.Length * 2]; for (int a = 0, b = 0; a < Data.Length; a++, b += 2) { byte k = MixTable(); int c = Data[a] & 0xff ^ k; if (c > 0) { Result[b] = (byte)HEXALPHABET_CHARS[c >> 4 & 0xf]; Result[b + 1] = (byte)HEXALPHABET_CHARS[c & 0xf]; } } return Result; } public string Encipher(string sData) { StringBuilder sbResult = new StringBuilder(sData.Length * 2); for (int a = 0; a < sData.Length; a++) { byte k = MixTable(); int c = sData[a] & 0xff ^ k; if (c > 0) { sbResult.Append(HEXALPHABET_CHARS[c >> 4 & 0xf]); sbResult.Append(HEXALPHABET_CHARS[c & 0xf]); } else { sbResult.Append("00"); } } return sbResult.ToString(); } public byte[] Decipher(byte[] Data, int Length) { if (Length % 2 != 0) throw new HabboRc4Exception("Invalid input data, input data is not hexadecimal."); byte[] Result = new byte[Length / 2]; for (int a = 0, b = 0; a < Length; a += 2, b++) { byte c = ConvertTwoHexBytesToByte((byte)Data[a], (byte)Data[a + 1]); Result[b] = (byte)(c ^ MixTable()); } return Result; } public string Decipher(string sData) { if (sData.Length % 2 != 0) throw new HabboRc4Exception("Invalid input data, input data is not hexadecimal."); StringBuilder sbResult = new StringBuilder(sData.Length); for (int a = 0, b = 0; a < sData.Length; a += 2, b++) { byte c = ConvertTwoHexBytesToByte((byte)sData[a], (byte)sData[a + 1]); sbResult.Append((char)(c ^ MixTable())); } return sbResult.ToString(); } #region Static methods public static string GeneratePublicKeyString() { int keyLength = new Random(DateTime.Now.Millisecond).Next(52, 64); Random v = new Random(DateTime.Now.Millisecond + DateTime.Now.Second + keyLength); StringBuilder sb = new StringBuilder(keyLength); for (int i = 0; i < keyLength; i++) { int j = 0; if (v.Next(0, 2) == 1) j = v.Next(97, 123); else j = v.Next(48, 58); sb.Append((char)j); } return sb.ToString(); } public static int CalculateKeyHash(string sPublicKey) { int iHash = 0; string sTable = sPublicKey.Substring(0, sPublicKey.Length / 2); string sKey = sPublicKey.Substring(sPublicKey.Length / 2); for (int i = 0; i < sTable.Length; i++) { int iIndex = sTable.IndexOf(sKey[i]); if (iIndex % 2 == 0) iIndex *= 2; if (i % 3 == 0) iIndex *= 3; if (iIndex < 0) iIndex = sTable.Length % 2; iHash += iIndex; iHash ^= iIndex << (i % 3) * 8; } return iHash; } private static byte ConvertTwoHexBytesToByte(byte A, byte B) { int C = 0; // The output value int D = 0; // Counter used for determining hex value while (D < HEXALPHABET_CHARS.Length) { if (HEXALPHABET_CHARS[D] == (A & 0xff)) { C = (D << 4); break; } D++; } D = 0; while (D < HEXALPHABET_CHARS.Length) { if (HEXALPHABET_CHARS[D] == (B & 0xff)) { C += D; break; } D++; } return (byte)C; } #endregion #endregion } public class HabboRc4Exception : Exception { #region Constructor public HabboRc4Exception(string sMessage) : base(sMessage) { } #endregion } }