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TomerStarkware
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Reviewable status:complete! all files reviewed, all discussions resolved (waiting on @eytan-starkware).
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Summary
Improved performance of sha256 padding phase.
Involved only a single store of the padded value, and using bounded ints for calculation of required values.
Type of change
Please check one:
Why is this change needed?
Sha256 padding had worse performance than possible.
What was the behavior or documentation before?
Higher gas consumption and larger code.
What is the behavior or documentation after?
Smaller and more efficient code.