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ameliustoday at 9:37 AM5 repliesview on HN

XOR is also great for storing copyrighted works without liability.

a = the bits of some song or movie

b = pure noise

Store c = a^b.

Give b to a friend. Throw away a.

Now both you and your friend have a bit vector of pure noise. Together you can produce the copyrighted work. But nobody is liable.


Replies

aleph_minus_onetoday at 10:35 AM

This is the "What Colour are your bits?" argument:

> https://ansuz.sooke.bc.ca/entry/23

> https://ansuz.sooke.bc.ca/entry/24

As these article outline, the legal situation is much more complicated (and unintuitive to people who are used to "computer science thinking").

lelanthrantoday at 9:45 AM

That's called encryption using a one time pad.

show 1 reply
pjc50today at 9:49 AM

Whether people are liable is a question for the courts, and I suspect they simply look through the tech and ask "do you end up with a copy of the work?"

(unless you're an AI company, in which case you can copy the whole internet just fine)

show 1 reply
meindnochtoday at 10:39 AM

Pretty sure the law doesn't care about this XOR trick.