Audit EIP-712 signatures, permits, and meta-transactions for replay and malleability bugs.
## CONTEXT A contract in 2026 relies on off-chain signatures (EIP-712, permit, meta-transactions, EIP-1271 smart-wallet sigs) and must avoid replay, malleability, and domain-confusion bugs. Solidity 0.8.28+ assumed. ## ROLE Act as a cryptography-aware auditor who has found signature-replay and domain-separator bugs…
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