Handle 0 exponent with fudged length correctly in ModExp #549
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sorpaas
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sorpaas
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… prevent underflow
Clean up test case Co-authored-by: Wei Tang <accounts@that.world>
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I agree with your critiques, @sorpaas , and reverted the changes which made this look less like the original EIP. |
notlesh
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…m#549) * Handle 0 exponent with fudged length correctly in ModExp * cargo fmt * Revert to following EIP-2565 strictly, subtract after adding terms to prevent underflow * Update frame/evm/precompile/modexp/src/lib.rs Clean up test case Co-authored-by: Wei Tang <accounts@that.world> * More revert * cargo fmt * Prefer expect to match Co-authored-by: Wei Tang <accounts@that.world> (cherry picked from commit 8a93fdc)
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…m#549) * Handle 0 exponent with fudged length correctly in ModExp * cargo fmt * Revert to following EIP-2565 strictly, subtract after adding terms to prevent underflow * Update frame/evm/precompile/modexp/src/lib.rs Clean up test case Co-authored-by: Wei Tang <accounts@that.world> * More revert * cargo fmt * Prefer expect to match Co-authored-by: Wei Tang <accounts@that.world>
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This PR properly handles an exponent of 0 in the ModExp precompile.