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_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));
}
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));
}