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Fix incorrect calculation for required number of keccak256 hash rounds #63

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Nov 21, 2023
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Fix incorrect calculation for required number of keccak256 hash rounds #63

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2 changes: 1 addition & 1 deletion contracts/precompiles/Keccak256.yul
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Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,7 @@ object "Keccak256" {
0 // per precompile interpreted value (0 since circuit doesn't react on this value anyway)
)
// 4. Calculate number of required hash rounds per calldata
let numRounds := div(add(ptrLength, sub(BLOCK_SIZE(), 1)), BLOCK_SIZE())
let numRounds := add(div(ptrLength, BLOCK_SIZE()), 1)
let gasToPay := mul(KECCAK_ROUND_GAS_COST(), numRounds)

// 5. Call precompile
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