Individual skill
nodejs-keccak256
JavaScriptとTypeScriptにおけるEthereumハッシュバグを防ぐ。NodeのSHA3-256はNIST SHA3であり、Ethereum Keccak-256ではなく、セレクター、署名、ストレージスロット、アドレス導出を静かに破壊する。
docs/ja-JP/skills/nodejs-keccak256/SKILL.md
Source commit d2ef2680594f9a17526a6e1a2e18b3d242c5d17b
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
Install this skill
Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.
An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 299,829
- Repository last updated
- Nov 6, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai-agents Repository topic
- anthropic Repository topic
- claude Repository topic
- claude-code Repository topic
- developer-tools Repository topic
- llm Repository topic
- mcp Repository topic
- productivity Repository topic
- engineering Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Read excerpt
# Node.js Keccak-256
EthereumはKeccak-256を使用し、Nodeの`crypto.createHash('sha3-256')`が公開するNIST標準化SHA3バリアントではない。
## 使用するタイミング
- Ethereum関数セレクターやイベントトピックの計算
- JS/TSでEIP-712、署名、Merkle、またはストレージスロットヘルパーの構築
- Nodeのcryptoを直接使用してEthereumデータをハッシュするコードのレビュー
## 仕組み
2つのアルゴリズムは同じ入力に対して異なる出力を生成し、Nodeは警告しない。
