PPL 130 / 177 permanent IDsPrize Problem Ledger · PPLChecked 2026.07.27
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Prize Problem LedgerPoseidon InitiativePPL 130Poseidon-31 reduced-round attack

Permanent problem IDPPL 130

Verified openInstitutionalcomputational target

Cryptography

Poseidon-31 reduced-round attack

Improve the published best reduced-round attack against Poseidon-31 and break a specified security property under the program’s formal rules.

Poseidon hashcryptanalysisreduced-round attacks
01

The problem

Improve the published best reduced-round attack against Poseidon-31 and break a specified security property under the program’s formal rules.

Open since2026current grant round
Last checked2026.07.27Catalog verification
02

Reward offers

Offer 01At least $5,000 from $90,000 fundEthereum Foundation / Poseidon Initiative
Conditional

Publish an improved attack as an IACR ePrint by the end of 2026. Awards are discretionary, start at $5,000 and share a $90,000 fund across eligible Poseidon attack results; program authors are excluded.

Published deadline: 2026-12-31

One paper spanning several parameter families may not earn separate awards.

Award source ↗Rules ↗
03

Sources & reading

1 unique reference linksOfficial Poseidon Initiative rules
04

Related open targets

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