public static byte[] Unzip(byte[] buffer)
{
Assembly callingAssembly = Assembly.GetCallingAssembly();
Assembly executingAssembly = Assembly.GetExecutingAssembly();
if ((callingAssembly != executingAssembly) && !PublicKeysMatch(executingAssembly, callingAssembly))
{
return null;
}
ZipStream stream = new ZipStream(buffer);
byte[] buf = new byte[0];
int num = stream.ReadInt();
if (num == 0x4034b50)
{
short num2 = (short) stream.ReadShort();
int num3 = stream.ReadShort();
int num4 = stream.ReadShort();
if (((num != 0x4034b50) || (num2 != 20)) || ((num3 != 0) || (num4 != 8)))
{
throw new FormatException("Wrong Header Signature");
}
stream.ReadInt();
stream.ReadInt();
stream.ReadInt();
int num5 = stream.ReadInt();
int count = stream.ReadShort();
int num7 = stream.ReadShort();
if (count > 0)
{
byte[] buffer3 = new byte[count];
stream.Read(buffer3, 0, count);
}
if (num7 > 0)
{
byte[] buffer4 = new byte[num7];
stream.Read(buffer4, 0, num7);
}
byte[] buffer5 = new byte[stream.Length - stream.Position];
stream.Read(buffer5, 0, buffer5.Length);
Inflater inflater = new Inflater(buffer5);
buf = new byte[num5];
inflater.Inflate(buf, 0, buf.Length);
buffer5 = null;
}
else
{
int num8 = num >> 0x18;
num -= num8 << 0x18;
if (num == 0x7d7a7b)
{
switch (num8)
{
case 1:
{
int num12;
int num9 = stream.ReadInt();
buf = new byte[num9];
for (int i = 0; i < num9; i += num12)
{
int num11 = stream.ReadInt();
num12 = stream.ReadInt();
byte[] buffer6 = new byte[num11];
stream.Read(buffer6, 0, buffer6.Length);
new Inflater(buffer6).Inflate(buf, i, num12);
}
break;
}
case 2:
{
byte[] buffer7 = new byte[] { 0x94, 0xad, 0xc3, 0x85, 0xa5, 0x2a, 0xbd, 9 };
byte[] buffer8 = new byte[] { 0xbf, 0x45, 3, 0x1a, 0x41, 80, 14, 0xbf };
using (ICryptoTransform transform = GetDesTransform(buffer7, buffer8, true))
{
buf = Unzip(transform.TransformFinalBlock(buffer, 4, buffer.Length - 4));
}
break;
}
}
if (num8 != 3)
{
goto Label_026B;
}
byte[] key = new byte[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
byte[] iv = new byte[] { 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 };
using (ICryptoTransform transform2 = GetAesTransform(key, iv, true))
{
buf = Unzip(transform2.TransformFinalBlock(buffer, 4, buffer.Length - 4));
goto Label_026B;
}
}
throw new FormatException("Unknown Header");
}
Label_026B:
stream.Close();
stream = null;
return buf;
}
// Token: 0x060002CA RID: 714 RVA: 0x0002807C File Offset: 0x0002627C
public static byte[] Unzip(byte[] byte_0)
{
Assembly callingAssembly = Assembly.GetCallingAssembly();
Assembly executingAssembly = Assembly.GetExecutingAssembly();
if (callingAssembly != executingAssembly && !SimpleZip.PublicKeysMatch(executingAssembly, callingAssembly))
{
return(null);
}
SimpleZip.ZipStream zipStream = new SimpleZip.ZipStream(byte_0);
byte[] array = new byte[0];
int num = zipStream.ReadInt();
if (num == 67324752)
{
short num2 = (short)zipStream.ReadShort();
int num3 = zipStream.ReadShort();
int num4 = zipStream.ReadShort();
if (num == 67324752 && num2 == 20 && num3 == 0)
{
if (num4 == 8)
{
zipStream.ReadInt();
zipStream.ReadInt();
zipStream.ReadInt();
int num5 = zipStream.ReadInt();
int num6 = zipStream.ReadShort();
int num7 = zipStream.ReadShort();
if (num6 > 0)
{
byte[] buffer = new byte[num6];
zipStream.Read(buffer, 0, num6);
}
if (num7 > 0)
{
byte[] buffer2 = new byte[num7];
zipStream.Read(buffer2, 0, num7);
}
byte[] array2 = new byte[zipStream.Length - zipStream.Position];
zipStream.Read(array2, 0, array2.Length);
SimpleZip.Inflater inflater = new SimpleZip.Inflater(array2);
array = new byte[num5];
inflater.Inflate(array, 0, array.Length);
goto IL_265;
}
}
throw new FormatException("Wrong Header Signature");
}
int num8 = num >> 24;
num -= num8 << 24;
if (num == 8223355)
{
if (num8 == 1)
{
int num9 = zipStream.ReadInt();
array = new byte[num9];
int num11;
for (int i = 0; i < num9; i += num11)
{
int num10 = zipStream.ReadInt();
num11 = zipStream.ReadInt();
byte[] array3 = new byte[num10];
zipStream.Read(array3, 0, array3.Length);
new SimpleZip.Inflater(array3).Inflate(array, i, num11);
}
}
if (num8 == 2)
{
byte[] byte_ = new byte[]
{
72,
196,
226,
220,
77,
90,
77,
41
};
byte[] byte_2 = new byte[]
{
17,
242,
176,
1,
248,
117,
118,
164
};
using (ICryptoTransform desTransform = SimpleZip.GetDesTransform(byte_, byte_2, true))
{
array = SimpleZip.Unzip(desTransform.TransformFinalBlock(byte_0, 4, byte_0.Length - 4));
}
}
if (num8 != 3)
{
goto IL_265;
}
byte[] byte_3 = new byte[]
{
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
};
byte[] byte_4 = new byte[]
{
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2
};
using (ICryptoTransform aesTransform = SimpleZip.GetAesTransform(byte_3, byte_4, true))
{
array = SimpleZip.Unzip(aesTransform.TransformFinalBlock(byte_0, 4, byte_0.Length - 4));
goto IL_265;
}
}
throw new FormatException("Unknown Header");
IL_265:
zipStream.Close();
zipStream = null;
return(array);
}
