https://github.com/etherspot/eip1271-verification-util

https://github.com/etherspot/eip1271-verification-util

Last synced: 10 months ago
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• Host: GitHub
• URL: https://github.com/etherspot/eip1271-verification-util
• Owner: etherspot
• License: mit
• Created: 2023-02-13T14:43:11.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2024-10-12T16:16:11.000Z (over 1 year ago)
• Last Synced: 2025-08-30T04:45:02.643Z (10 months ago)
• Language: TypeScript
• Size: 818 KB
• Stars: 11
• Watchers: 9
• Forks: 1
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# EIP1271 Module

A simple library to validate EIP1271 signatures.

### Usage

Simple usage

```ts

import ethers from "ethers";

import {

  isValidEip1271Signature,

  isValidEip1271SignatureForAllNetworks,

} from "@etherspot/eip1271-verification-util";

import { MNEMONIC, RPC } from "./constants";

const checkSig = async () => {

  const signer = ethers.Wallet.fromMnemonic(MNEMONIC);

  const data = "0x123456";

  const rpcUrls = [RPC.polygon, RPC.bsc, RPC.xdai]; // Array of RPC URLs to create providers to perform smart contract wallet validation with EIP 1271

  const walletAddress = signer.address; // The signer address to verify the signature against

  const signature = await signer.signMessage(ethers.utils.arrayify(hexxed)); // The signature to verify as a hex string

  const hash = ethers.utils.hashMessage(ethers.utils.arrayify(hexxed)); // Hashed data used for the signature to verify. The dApp will need to pre-compute this as no hashing will occur in the function, and this will be directly used in isValidEip1271Signature

  const isValidSig = await isValidEip1271Signature(

    rpcUrls,

    walletAddress,

    hash,

    signature

  );

  console.log("is signature valid:", isValidSig); // Returns a single boolean

  const isValidSigPerNetwork = await isValidEip1271SignatureForAllNetworks(

    rpcUrls,

    walletAddress,

    hash,

    signature

  );

  console.log("is signature valid for each network:", isValidSigPerNetwork); // Returns an array of booleans with chainId for each network you provided a RPC URL for eg. [{ chainId: 1, name: "mainnet", valid: true }, { chainId: 56, name: "bnb", valid: false }, ...]

};

```