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Use hashNote for withdrawal commitment check #66

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Merged
Th0rgal merged 1 commit into from
May 14, 2026
Merged

Use hashNote for withdrawal commitment check #66

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4 changes: 2 additions & 2 deletions Benchmark/Cases/UnlinkXyz/Pool/Contract.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -906,7 +906,6 @@ verity_contract UnlinkPool where
/- `_executeWithdrawal(WithdrawalTransaction calldata _txn, bool _emergency)`
(UnlinkPool.sol:614-666). -/
function executeWithdrawal (txn : WithdrawalTransaction, emergency : Bool) : Unit := do
let recipient := wordToAddress txn.withdrawal.npk
requireError (txn.withdrawal.amount != 0)
PoolInvalidNoteAmount()
requireError (txn.withdrawal.npk != 0)
Expand All @@ -915,6 +914,7 @@ verity_contract UnlinkPool where
PoolInvalidNoteToken()
requireError (txn.withdrawal.npk <= 0xffffffffffffffffffffffffffffffffffffffff)
PoolInvalidWithdrawalRecipient()
let recipient := wordToAddress txn.withdrawal.npk
let selfAddr ← Verity.contractAddress
requireError (recipient != selfAddr) PoolInvalidWithdrawalRecipient()
let verifierRouter ← getStorageAddr stateVerifierRouter
Expand All @@ -932,7 +932,7 @@ verity_contract UnlinkPool where
let wSlot := sub outputCount 1
let withdrawalCommitment := arrayElement txn.newCommitments wSlot
requireError (withdrawalCommitment != 0) PoolWithdrawalSlotZero()
let noteHash := add txn.withdrawal.npk txn.withdrawal.amount
let noteHash ← hashNote txn.withdrawal.npk txn.withdrawal.token txn.withdrawal.amount
requireError (withdrawalCommitment == noteHash) PoolInvalidWithdrawalCommitment()
let ciphertextCount ← countNonZero txn.newCommitments wSlot
requireError ((arrayLength txn.ciphertexts) == ciphertextCount)
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