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Update EIP-2565 to clarify specification #2892

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merged 18 commits into from
Oct 8, 2020
Merged

Update EIP-2565 to clarify specification #2892

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2671b29
Move from EIP-2565 from 'Last Call' to 'Accepted'
ineffectualproperty Aug 21, 2020
cca0062
Use relative paths for EIP links
ineffectualproperty Aug 24, 2020
faeb380
Update relative path to EIP-198
ineffectualproperty Aug 24, 2020
0b2ac2f
Update relative path to EIP-198 pt 2
ineffectualproperty Aug 24, 2020
d4a5346
Update to clarify EIP specification
ineffectualproperty Sep 23, 2020
6a64561
Delete library benchmarks from specification
ineffectualproperty Sep 23, 2020
e47499a
Extend last call review period
ineffectualproperty Sep 23, 2020
277ef6b
Update mult complexity to represent limb in bytes
ineffectualproperty Sep 23, 2020
85378e1
Strengthen EIP language
ineffectualproperty Sep 24, 2020
edea934
Tighten spec and add implementations section
ineffectualproperty Oct 1, 2020
1015d6c
Rather than continuing to go back and forth, I thought maybe just sub…
Oct 2, 2020
d337dd8
Merge pull request #1 from ethereum/2565
ineffectualproperty Oct 6, 2020
5dc7cc2
Fix spelling and TODOs, add Python implementation
ineffectualproperty Oct 6, 2020
6393f0e
Updates simple summary text
ineffectualproperty Oct 7, 2020
e398ee6
Remove reference to EIP-198 variable
ineffectualproperty Oct 7, 2020
7ba236e
Update EIP title
ineffectualproperty Oct 7, 2020
5b00e67
Fix image titles and legends
ineffectualproperty Oct 7, 2020
78260c6
Merge branch 'master' into patch-1
ineffectualproperty Oct 7, 2020
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7 changes: 3 additions & 4 deletions EIPS/eip-2565.md
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Expand Up @@ -3,16 +3,15 @@ eip: 2565
title: Repricing of the EIP-198 ModExp precompile
author: Kelly Olson (@ineffectualproperty), Sean Gulley (@sean-sn), Simon Peffers (@simonatsn), Justin Drake (@justindrake), Dankrad Feist (@dankrad)
discussions-to: https://ethereum-magicians.org/t/big-integer-modular-exponentiation-eip-198-gas-cost/4150
status: Last Call
review-period-end: 2020-07-31
status: Accepted
type: Standards Track
category: Core
created: 2020-03-20
requires: 198
---

## Simple Summary
The [EIP-198](https://eips.ethereum.org/EIPS/eip-198) ‘big integer modular exponentiation’, or `ModExp`, precompile is currently overpriced. Re-pricing this precompile will enable more cost efficient verification of RSA signatures, verifiable delay functions (VDFs), primality checks, and more.
The [EIP-198](eip-198.md) ‘big integer modular exponentiation’, or `ModExp`, precompile is currently overpriced. Re-pricing this precompile will enable more cost efficient verification of RSA signatures, verifiable delay functions (VDFs), primality checks, and more.
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## Abstract
After benchmarking the ModExp precompile, we discovered that it is ‘overpriced’ relative to other precompiles. We also discovered that the current gas pricing formula could be improved to better estimate the computational complexity of various ModExp input variables. To improve the gas cost pricing for this precompile the following options are available:
Expand Down Expand Up @@ -88,7 +87,7 @@ There are no changes to the underlying interface or arithmetic algorithms, so th
The biggest security consideration for this EIP is creating a potential DoS vector by making ModExp operations too inexpensive relative to their computation time.

## References
[EIP-198](https://eips.ethereum.org/EIPS/eip-198)
[EIP-198](eip-198.md)
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## Copyright
Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).