Reduce Keccak columns by 145 #1738
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dannywillems
approved these changes
Jan 23, 2024
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Closes #1709.
This PR leverages the fact that plenty of columns are only accessed during sponge rows, which only use 800 of the 1965 available
currcolumns. Storing those coefficients incurrsaves us 145 columns (meaning additional field elements in the witness) whose consumed space is redundant otherwise.As a side effect, this reduces the lines of code needed in the proof of Keccak.