Package Exports

@ambire/signature-validator
@ambire/signature-validator/index.js

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Readme

Signature Validator library

As signatures can be daunting at times, this is a library aiming to implement universal signature verification, supporting:

Standard message verification (eth_sign)
712 Typed data verification (eth_signTypedData_v*)
1271 Smart contract on-chain verification (isValidSignature)
An optional smart contract signature off-chain verification (eg if the smart wallet is counterfactual and not deployed yet)

signature-validator flow

Usage

Simple eth_sign verification

const ethers = require('ethers')
const { verifyMessage } = require('signature-validator')

const provider = new ethers.providers.JsonRpcProvider('https://polygon-rpc.com')

// Returning {success:bool, type:string}
verifyMessage({
    signer: '0xaC39b311DCEb2A4b2f5d8461c1cdaF756F4F7Ae9',
    provider,
    message: 'My funds are SAFU with Ambire Wallet',
    signature: '0x9863d84f3119ac01d9e3bf9294e6c0c3572a07780fc7c49e8dc913806f4b1dbd4cc075462dc84422a9b981b2556f9c9197d76da7ba3603e53e9300869c574d821c',
}).then(result => {
if (result.success) {
    console.log('Signature valid')
} else {
    console.log('Signature invalid')
}
}).catch(e => {
    console.error('Error validating', e)
})

For more examples, you can check the /tests folder

Testing

npm i --development
npm test