// Token: 0x06000753 RID: 1875 RVA: 0x0002FF98 File Offset: 0x0002E198
public static byte[] InitKey(byte[] key, byte[] data, int size)
{
YSDecrypt._dynamicKeyIndex = 0;
int num = (size >= 2048) ? 256 : (size >> 3);
uint num2 = (uint)((num ^ 3) & num);
byte[] array = new byte[16];
Buffer.BlockCopy(key, 0, array, 0, 16);
byte[] array2 = BH3ES.BH3ESDecrypt(array);
for (int i = 0; i < 16; i++)
{
array2[i] ^= YSKey.XorKey[i];
}
ulong num3 = ulong.MaxValue;
ulong num4 = 0UL;
ulong num5 = 0UL;
ulong num6 = 0UL;
byte[] result;
using (BinaryStream binaryStream = new BinaryStream(data, BinaryAccess.ReadWrite, null))
{
int num7 = 0;
while ((long)num7 < (long)((ulong)num2))
{
num3 ^= binaryStream.ReadUInt64(BinaryEndian.LittleEndian);
num4 ^= binaryStream.ReadUInt64(BinaryEndian.LittleEndian);
num5 ^= binaryStream.ReadUInt64(BinaryEndian.LittleEndian);
num6 ^= binaryStream.ReadUInt64(BinaryEndian.LittleEndian);
num7 += 4;
}
num3 ^= (num4 ^ num5 ^ num6);
if ((ulong)num2 != (ulong)((long)num))
{
long num8 = (long)num - (long)((ulong)num2);
int num9 = 0;
while ((long)num9 < num8)
{
num3 ^= binaryStream.ReadUInt64(BinaryEndian.LittleEndian);
num9++;
}
}
ulong num10 = BitConverter.ToUInt64(array2, 0);
ulong num11 = BitConverter.ToUInt64(array2, 8);
using (BinaryStream binaryStream2 = YSDecrypt.InitKeyData(num10 ^ num11 ^ num3 ^ 7936877569879298522UL ^ 11567864270080435830UL))
{
using (BinaryStream binaryStream3 = new BinaryStream(new byte[4096], BinaryAccess.ReadWrite, null))
{
for (int j = 0; j < 512; j++)
{
ulong dynamicKey = YSDecrypt.GetDynamicKey(binaryStream2);
binaryStream3.WriteUInt64(dynamicKey, BinaryEndian.LittleEndian);
}
result = binaryStream3.ToArray();
}
}
}
return(result);
}
// Token: 0x06000759 RID: 1881 RVA: 0x000304A4 File Offset: 0x0002E6A4
private static async Task <bool> ExportUnityAsset(string filePath, byte[] data)
{
try
{
if (data.Length != 0)
{
BinaryStream binaryStream = new BinaryStream(data, BinaryAccess.ReadWrite, null);
{
binaryStream.ReadStringToNull(null);
binaryStream.ReadUInt32(BinaryEndian.LittleEndian);
byte[] key = binaryStream.ReadBytes(32);
ushort size = binaryStream.ReadUInt16(BinaryEndian.LittleEndian);
byte[] array = binaryStream.ReadBytes();
byte[] array2 = YSDecrypt.InitKey(key, array, (int)size);
if (array2 != null)
{
int num = array2.Length;
for (int i = 0; i < array.Length; i++)
{
byte[] array3 = array;
int num2 = i;
array3[num2] ^= array2[i % num];
}
string fileNameWithoutExtension = Path.GetFileNameWithoutExtension(filePath);
string text = Path.GetDirectoryName(filePath);
int num3 = text.LastIndexOf("\\");
text = text.Substring(num3 + 1);
string text2 = Path.Combine(YSExport._folderPath, "blocks_export", text);
int key2;
if (int.TryParse(fileNameWithoutExtension, out key2))
{
List <int> list;
if (YSExport._blkInfo.TryGetValue(key2, out list) && list.Count > 1)
{
list.Sort();
for (int j = 0; j < list.Count; j++)
{
int num4 = list[j];
int num5;
if (j != list.Count - 1)
{
num5 = list[j + 1] - num4;
}
else
{
num5 = array.Length - num4;
}
byte[] DecyptedData = new byte[num5];
Buffer.BlockCopy(array, num4, DecyptedData, 0, num5);
FileUtils.SaveFile(Path.Combine(text2, string.Format("{0}_{1}.unity3d", fileNameWithoutExtension, num4)), DecyptedData);
}
}
else
{
text2 = Path.Combine(text2, fileNameWithoutExtension + ".unity3d");
FileUtils.SaveFile(text2, array);
}
ExportInfo.AddSuccess();
await Task.Delay(20);
return(true);
}
ExportInfo.AddError();
Console.WriteLine("\nError->" + filePath + "\n\tFailInfo->FileName Error");
}
}
}
}
catch (Exception ex)
{
ExportInfo.AddError();
Console.WriteLine(string.Concat(new string[]
{
"\nError->",
filePath,
"\n\tFailInfo->",
ex.Message,
"\n\tStackInfo->",
ex.StackTrace
}));
}
await Task.Delay(20);
return(false);
}
