Individual skill
nodejs-keccak256
防止 JavaScript 和 TypeScript 中的以太坊哈希错误。Node 的 sha3-256 是 NIST SHA3，而非以太坊 Keccak-256，会静默破坏选择器、签名、存储槽和地址推导。
docs/zh-CN/skills/nodejs-keccak256/SKILL.md
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# Node.js Keccak-256
以太坊使用 Keccak-256，而非 Node 的 `crypto.createHash('sha3-256')` 所暴露的 NIST 标准化 SHA3 变体。
## 何时使用
* 计算以太坊函数选择器或事件主题
* 在 JS/TS 中构建 EIP-712、签名、Merkle 或存储槽辅助函数
* 审查任何直接使用 Node crypto 对以太坊数据进行哈希的代码
## 工作原理
两种算法对相同输入会产生不同输出，且 Node 不会发出警告。
