Added some error checking on encrypt/decrypt, will disconect user and not crash the server.

Source/Framework/Cryptography/PacketCrypt.cs

@@ -22,9 +22,6 @@ namespace Framework.Cryptography
 {
     public sealed class WorldCrypt : IDisposable
     {
-        static readonly byte[] ServerEncryptionKey = { 0x08, 0xF1, 0x95, 0x9F, 0x47, 0xE5, 0xD2, 0xDB, 0xA1, 0x3D, 0x77, 0x8F, 0x3F, 0x3E, 0xE7, 0x00 };
-        static readonly byte[] ServerDecryptionKey = { 0x40, 0xAA, 0xD3, 0x92, 0x26, 0x71, 0x43, 0x47, 0x3A, 0x31, 0x08, 0xA6, 0xE7, 0xDC, 0x98, 0x2A };
-
         public void Initialize(byte[] key)
         {
             if (IsInitialized)
@@ -37,6 +34,8 @@ namespace Framework.Cryptography
         }
 
         public bool Encrypt(ref byte[] data, ref byte[] tag)
+        {
+            try
             {
                 if (IsInitialized)
                     _serverEncrypt.Encrypt(BitConverter.GetBytes(_serverCounter).Combine(BitConverter.GetBytes(0x52565253)), data, data, tag);
@@ -44,8 +43,15 @@ namespace Framework.Cryptography
                 ++_serverCounter;
                 return true;
             }
+            catch (CryptographicException)
+            {
+                return false;
+            }
+        }
 
         public bool Decrypt(byte[] data, byte[] tag)
+        {
+            try
             {
                 if (IsInitialized)
                     _clientDecrypt.Decrypt(BitConverter.GetBytes(_clientCounter).Combine(BitConverter.GetBytes(0x544E4C43)), data, tag, data);
@@ -53,6 +59,11 @@ namespace Framework.Cryptography
                 ++_clientCounter;
                 return true;
             }
+            catch (CryptographicException)
+            {
+                return false;
+            }
+        }
 
         public void Dispose()
         {
@@ -66,5 +77,4 @@ namespace Framework.Cryptography
         ulong _clientCounter;
         ulong _serverCounter;
     }
-
 }