Just curious, regarding the opinion topic, I don’t quite get what the hidden text is.
In my chromebook text editor it shows this:
while a hex editor shows this:
What are the red circles in the former picture, and why does it translate to something different?
Is there a unicode character to represent those red circles? There is usually something like that, right?
I assume that the contents are decoded on the person’s server, so it’s really just concealed ciphertext.
Edit: Yeah playing around with the 0x0-0x19 unicode range gives me the circles. They are placeholders to represent non-printable characters. My question is, similar to how � can be used to replace unicode characters and yet has its own character number (0xfffd), does the red dot have its own character number? Also, how come the hex editor shows something different?
Also, how come typing “ctrl+shift+u+fffd” yields “�” on my chromebook, while doing the alt code (or alt+“numpad+”) for that same thing on windows yields something different? How do I type unicode characters on windows like you do on chromebooks?