Where did SHAKE128 and SHAKE256 originate from?

I am trying to find them in the original Keccak documentation but can't find them.

Is it some special mode of Keccak referenced in the documentation? Or something invented by NIST and added to the SHA3 standard?

Any public cryptanalysis done on them?


Question: Factory panic alarm going off after changing battery [97 Toyota Camry]
Answer: Obviously the easy fix is replace the battery in your FOB then just hit unlock once you hook up the battery. But...

If you are too lazy to replace your FOB battery. Try just putting the key in the ignition in the "ON" position then hooking up the battery.

If that doesn't work then try cycling the key between off and on (not start) 5 times.

If that doesn't work then make sure all doors are closed and unlocked before disconnecting and closed and unlocked before reconnecting.

If that doesn't work pull the fuse for the horn and go find a fob battery.