private static byte[] Encode(
IPackedSlot packed,
int uniqueId,
bool isWeapon,
int assetLibrarySetId,
Platform platform)
{
var writer = new BitWriter();
writer.WriteInt32(InfoManager.AssetLibraryManager.Version, 7);
writer.WriteBoolean(isWeapon);
writer.WriteInt32(uniqueId, 32);
writer.WriteUInt16(0xFFFF, 16);
writer.WriteInt32(assetLibrarySetId, 8);
packed.Write(writer, platform);
var unobfuscatedBytes = writer.GetBuffer();
if (unobfuscatedBytes.Length > 40)
{
throw new InvalidOperationException();
}
if (unobfuscatedBytes.Length < 40)
{
var start = unobfuscatedBytes.Length;
Array.Resize(ref unobfuscatedBytes, 40);
for (int i = start; i < unobfuscatedBytes.Length; i++)
{
unobfuscatedBytes[i] = 0xFF;
}
}
var hash = CRC32.Hash(unobfuscatedBytes, 0, unobfuscatedBytes.Length);
var computedCheck = (ushort)(((hash & 0xFFFF0000) >> 16) ^ ((hash & 0x0000FFFF) >> 0));
unobfuscatedBytes[5] = (byte)((computedCheck & 0xFF00) >> 8);
unobfuscatedBytes[6] = (byte)((computedCheck & 0x00FF) >> 0);
for (int i = unobfuscatedBytes.Length - 1; i > 5; i--)
{
if (unobfuscatedBytes[i] != 0xFF)
{
Array.Resize(ref unobfuscatedBytes, i + 1);
break;
}
}
var data = (byte[])unobfuscatedBytes.Clone();
var seed = BitConverter.ToUInt32(data, 1).Swap();
BogoEncrypt(seed, data, 5, data.Length - 5);
return(data);
}
public static byte[] Encode(IPackable packable)
{
if (packable == null)
{
throw new ArgumentNullException("packable");
}
if ((packable is BaseWeapon) == false &&
(packable is BaseItem) == false)
{
throw new ArgumentException("unsupported packable");
}
var assetLibrarySet =
InfoManager.AssetLibraryManager.Sets.SingleOrDefault(s => s.Id == packable.AssetLibrarySetId);
if (assetLibrarySet == null)
{
throw new ArgumentException();
}
var writer = new BitWriter();
writer.WriteInt32(InfoManager.AssetLibraryManager.Version, 7);
writer.WriteBoolean(packable is BaseWeapon);
writer.WriteInt32(packable.UniqueId, 32);
writer.WriteUInt16(0xFFFF, 16);
writer.WriteInt32(packable.AssetLibrarySetId, 8);
packable.Write(writer);
var unobfuscatedBytes = writer.GetBuffer();
if (unobfuscatedBytes.Length > 40)
{
throw new InvalidOperationException();
}
if (unobfuscatedBytes.Length < 40)
{
var start = unobfuscatedBytes.Length;
Array.Resize(ref unobfuscatedBytes, 40);
for (int i = start; i < unobfuscatedBytes.Length; i++)
{
unobfuscatedBytes[i] = 0xFF;
}
}
var hash = CRC32.Hash(unobfuscatedBytes, 0, unobfuscatedBytes.Length);
var computedCheck = (ushort)(((hash & 0xFFFF0000) >> 16) ^ ((hash & 0x0000FFFF) >> 0));
unobfuscatedBytes[5] = (byte)((computedCheck & 0xFF00) >> 8);
unobfuscatedBytes[6] = (byte)((computedCheck & 0x00FF) >> 0);
for (int i = unobfuscatedBytes.Length - 1; i > 5; i--)
{
if (unobfuscatedBytes[i] != 0xFF)
{
Array.Resize(ref unobfuscatedBytes, i + 1);
break;
}
}
var data = (byte[])unobfuscatedBytes.Clone();
var seed = BitConverter.ToUInt32(data, 1).Swap();
BogoEncrypt(seed, data, 5, data.Length - 5);
return(data);
}