public void method_4(string string_1)
{
Class208 @class = new Class208();
byte[] rgbKey = Class207.smethod_0(Class186.smethod_3(string_1));
this.icryptoTransform_0 = @class.CreateEncryptor(rgbKey, null);
}
public static byte[] smethod_3(string string_0)
{
if (string_0 == null)
{
return(new byte[0]);
}
return(Encoding.GetEncoding(Class186.smethod_0()).GetBytes(string_0));
}
public static string smethod_1(byte[] byte_0, int int_1)
{
if (byte_0 == null)
{
return(string.Empty);
}
return(Encoding.GetEncoding(Class186.smethod_0()).GetString(byte_0, 0, int_1));
}
public static byte[] smethod_4(int int_1, string string_0)
{
if (string_0 == null)
{
return(new byte[0]);
}
if ((int_1 & 2048) != 0)
{
return(Encoding.UTF8.GetBytes(string_0));
}
return(Class186.smethod_3(string_0));
}
public static string smethod_2(int int_1, byte[] byte_0)
{
if (byte_0 == null)
{
return(string.Empty);
}
if ((int_1 & 2048) != 0)
{
return(Encoding.UTF8.GetString(byte_0, 0, byte_0.Length));
}
return(Class186.smethod_1(byte_0, byte_0.Length));
}
private int method_11(byte[] byte_0, int int_2, int int_3)
{
if (!this.method_4())
{
throw new ZipException("Library cannot extract this entry. Version required is (" + this.class193_0.method_11().ToString() + ")");
}
if (this.class193_0.method_0())
{
if (this.password == null)
{
throw new ZipException("No password set.");
}
Class208 @class = new Class208();
byte[] rgbKey = Class207.smethod_0(Class186.smethod_3(this.password));
this.class201_0.method_12(@class.CreateDecryptor(rgbKey, null));
byte[] array = new byte[12];
this.class201_0.method_7(array, 0, 12);
if (array[11] != this.class193_0.method_2())
{
throw new ZipException("Invalid password");
}
if (this.long_0 >= 12L)
{
this.long_0 -= 12L;
}
else if ((this.class193_0.method_4() & 8) == 0)
{
throw new ZipException(string.Format("Entry compressed size {0} too small for encryption", this.long_0));
}
}
else
{
this.class201_0.method_12(null);
}
if (this.int_0 == 8 && this.class201_0.method_1() > 0)
{
this.class201_0.method_3(this.class196_0);
}
this.delegate5_0 = new ZIPCompressor.Delegate5(this.method_12);
return(this.method_12(byte_0, int_2, int_3));
}
public Class193 method_5()
{
if (this.class192_0 == null)
{
throw new InvalidOperationException("Closed.");
}
if (this.class193_0 != null)
{
this.method_8();
}
int num = this.class201_0.method_10();
if (num != 33639248 && num != 101010256 && num != 84233040 && num != 117853008)
{
if (num != 101075792)
{
if (num == 808471376 || num == 134695760)
{
num = this.class201_0.method_10();
}
if (num != 67324752)
{
throw new ZipException("Wrong Local header signature: 0x" + string.Format("{0:X}", num));
}
short int_ = (short)this.class201_0.method_9();
this.int_1 = this.class201_0.method_9();
this.int_0 = this.class201_0.method_9();
uint num2 = (uint)this.class201_0.method_10();
int num3 = this.class201_0.method_10();
this.long_0 = (long)this.class201_0.method_10();
this.long_1 = (long)this.class201_0.method_10();
int num4 = this.class201_0.method_9();
int num5 = this.class201_0.method_9();
bool flag = (this.int_1 & 1) == 1;
byte[] array = new byte[num4];
this.class201_0.method_5(array);
string string_ = Class186.smethod_2(this.int_1, array);
this.class193_0 = new Class193(string_, (int)int_);
this.class193_0.method_5(this.int_1);
this.class193_0.method_28((Enum31)this.int_0);
if ((this.int_1 & 8) == 0)
{
this.class193_0.method_26((long)num3 & 4294967295L);
this.class193_0.method_22(this.long_1 & 4294967295L);
this.class193_0.method_24(this.long_0 & 4294967295L);
this.class193_0.method_3((byte)(num3 >> 24 & 255));
}
else
{
if (num3 != 0)
{
this.class193_0.method_26((long)num3 & 4294967295L);
}
if (this.long_1 != 0L)
{
this.class193_0.method_22(this.long_1 & 4294967295L);
}
if (this.long_0 != 0L)
{
this.class193_0.method_24(this.long_0 & 4294967295L);
}
this.class193_0.method_3((byte)(num2 >> 8 & 255u));
}
this.class193_0.method_18((long)((ulong)num2));
if (num5 > 0)
{
byte[] array2 = new byte[num5];
this.class201_0.method_5(array2);
this.class193_0.method_30(array2);
}
this.class193_0.method_31(true);
if (this.class193_0.method_23() >= 0L)
{
this.long_0 = this.class193_0.method_23();
}
if (this.class193_0.method_21() >= 0L)
{
this.long_1 = this.class193_0.method_21();
}
if (this.int_0 == 0 && ((!flag && this.long_0 != this.long_1) || (flag && this.long_0 - 12L != this.long_1)))
{
throw new ZipException("Stored, but compressed != uncompressed");
}
if (this.class193_0.method_34())
{
this.delegate5_0 = new ZIPCompressor.Delegate5(this.method_11);
}
else
{
this.delegate5_0 = new ZIPCompressor.Delegate5(this.method_10);
}
return(this.class193_0);
}
}
this.Close();
return(null);
}