Detects signature replay vulnerabilities in smart contracts — affecting 19.63% of signature-using contracts. Covers five replay types (same-chain, cross-chain, cross-contract, nonce-skip, expired-signature), EIP-712 domain separator verification, nonce management analysis, ecrecover edge cases (address(0), malleability, s-value), permit/permit2 safety, ERC-1271 contract wallet support, and meta-transaction security. Use when auditing contracts with ecrecover, ECDSA, EIP-712, permit, meta-transactions, multi-sig, or any off-chain signature verification.
How to install signature-replay-analysis?
quillai-network/quillshield_skills/signature-replay-analysis
$npx -y skills add quillai-network/quillshield_skills --skill signature-replay-analysisInstalls into the current project.
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Run `npx skills use "https://github.com/quillai-network/quillshield_skills" --skill "quillai-network/quillshield_skills/signature-replay-analysis"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/quillai-network/quillshield_skills" that are relevant to the current task. Run `npx skills add "https://github.com/quillai-network/quillshield_skills"` and select the relevant skills, then follow their instructions.
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