Extractor Hood

Fulltext Extractor

the most skilled extractor.

Cause I am the most skilled extractor.

Fischer had an extractor that teaches subconscious to defend itself.

What we do in this case is we use what's called an extractor.

Extractor hoods are used to filter out gasses from chemical reactions. The air, once cleaned, is pumped outside of the building.

So an extractor is something that takes a bumpy distribution and makes it into a uniform distribution over the key space.

And here HMAC is used both as the PRF for expanding and an extractor for extracting the initial pseudo random key.

This is called a SlFT feature extractor, and it's one of the state of the art methods that are very commonly used.

So essentially the salt, you know, you can just bang it the keyboard a couple of times when you generate it but it just needs to be something that's random initially but then it's fixed forever, and it's fine if the adversary knows what it is and nevertheless the extractor is able to extract the entropy and output a uniformly random string K. In some sense the salt is only there to defend against adversarially bad distributions that might mess up our extractor.