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。
DeepseekModel
Curated skill
Quality Excellent · 90
v1.0.0
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name nodejs-keccak256 description 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。 origin ECC direct-port adaptation version 1.0.0 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。 import crypto from 'crypto' ; import { keccak256, toUtf8Bytes } from 'ethers' ; const data = 'hello' ; const nistSha3 = crypto. createHash ( 'sha3-256' ). update (data). digest ( 'hex' ); const keccak = keccak256 ( toUtf8Bytes (data)). slice ( 2 ); console . log (nistSha3 === keccak); // false 示例 ethers v6 import { keccak256, toUtf8Bytes, solidityPackedKeccak256, id } from 'ethers' ; const hash = keccak256 ( new Uint8Array ([ 0x01 , 0x02 ])); const hash2 = keccak256 ( toUtf8Bytes ( 'hello' )); const topic = id ( 'Transfer(address,address,uint256)' ); const packed = solidityPackedKeccak256 ( [ 'address' , 'uint256' ], [ '0x742d35Cc6634C0532925a3b8D4C9B569890FaC1c' , 100n ], ); viem import { keccak256, toBytes } from 'viem' ; const hash = keccak256 ( toBytes ( 'hello' )); web3.js const hash = web3. utils . keccak256 ( 'hello' ); const packed = web3. utils . soliditySha3 ( { type : 'address' , value : '0x742d35Cc6634C0532925a3b8D4C9B569890FaC1c' }, { type : 'uint256' , value : '100' }, ); 常见模式 import { id, keccak256, AbiCoder } from 'ethers' ; const selector = id ( 'transfer(address,uint256)' ). slice ( 0 , 10 ); const typeHash = keccak256 ( toUtf8Bytes ( 'Transfer(address from,address to,uint256 value)' )); function getMappingSlot ( key : string , mappingSlot : number ): string { return keccak256 ( AbiCoder . defaultAbiCoder (). encode ([ 'address' , 'uint256' ], [key, mappingSlot]), ); } 从公钥生成地址 import { keccak256 } from 'ethers' ; function pubkeyToAddress ( pubkeyBytes : Uint8Array ): string { const hash = keccak256 (pubkeyBytes. slice ( 1 )); return '0x' + hash. slice (- 40 ); } 审计你的代码库 grep -rn "createHash.*sha3" --include= "*.ts" --include= "*.js" --exclude-dir=node_modules . grep -rn "keccak256" --include= "*.ts" --include= "*.js" . | grep -v node_modules 规则 在以太坊上下文中，切勿使用 crypto.createHash('sha3-256') 。应使用来自 ethers 、 viem 、 web3 或其他明确 Keccak 实现的 Keccak 感知辅助函数。
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| Field | Description |
|---|---|
| format | Format tag (skill/v1) |
| skill_id | Unique skill ID |
| name | Skill name |
| version | Version |
| description | Description |
| category | Categories (array) |
| trigger_words | Trigger words |
| tags | Tags |
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| examples | Examples |
| install_guide | Import guide for Coze / Dify / Claude / custom frameworks |
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