ZeroTrustOrg accounts

This repository allows users to use SimplePasskeyAccount, a smart contract account where Passkey is a signer for submitting ERC4337 UserOperations.

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Smart contracts for accounts zerotrust-accounts

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The sample react application using this repo zerotrust-starter-kit

Get Started

To get started with using SimplePasskeyAccount, follow these steps:

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This repository has two peer dependencies: permissionless and viem.

``bash
npm install @zero-trust-org/accounts permissionless@0.0.17 view@1.21.0
`

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When creating a new Passkey, it is important to save the publicKey and credential ID as they are only extractable at creation time.

`javascript
import { Passkey } from "@zero-trust-org/accounts";

const passkeyCreateCredentialResponse = await Passkey.create({
appName: 'MyTestDapp',
displayName: 'TestUser',
name: 'TestUser',
yubikeyOnly: false,
});
`

This will return an object of type PasskeyCreateCredentialResponse containing the publicKeyCredential and authenticatorAttestationResponse

`javascript
{
publicKeyCredential: PublicKeyCredential ;
authenticatorAttestationResponse: AuthenticatorAttestationResponse;
}
`
You can extract the credentialId and publicKey of Passkey from this response.

`javascript
const credentialId = passkeyCreateCredentialResponse.publicKeyCredential.id;
const publicKey = authenticatorAttestationResponse.getPublicKey();
`

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Once you have the credentialId and publicKey of the Passkey, you can create an instance of SimplePasskeyAccount using passkeyToSimplePasskeyAccount

`javascript
import { PasskeyToSimplePasskeyAccountParameters, SimplePasskeyAccount, passkeyToSimplePasskeyAccount } from "@zero-trust-org/accounts";

const passkeyToSimplePasskeyAccountParameters: PasskeyToSimplePasskeyAccountParameters = {
credentialId: credentialId,
publicKey: publicKey,
entryPoint: entryPointAddress,
factoryAddress: accountFactoryAddress,
index: 0,
};

const simplePasskeyAccount:SimplePasskeyAccount = await passkeyToSimplePasskeyAccount(
publicClient,
passkeyToSimplePasskeyAccountParameters,
);
`

The SimplePasskeyAccount instance exposes properties and methods such as signing user operations via Passkey, encoding calldata, getting the account's nonce, and getting the init code of the account.


`javascript
const senderAddress = simplePasskeyAccount.address;
const nonce = await simplePasskeyAccount.getNonce();
const initCode = await simplePasskeyAccount.getInitCode();

const sendEthCalldata = await simplePasskeyAccount.encodeCallData({
to,
value,
data
});

const userOperation: UserOperation= {
callData: sendEthCalldata,
initCode: nonce === BigInt(0) ? initCode : '0x',
sender: senderAddress,
nonce: nonce,
maxFeePerGas: BigInt(2000000),
maxPriorityFeePerGas: BigInt(2000000),
callGasLimit: BigInt(2000000),
preVerificationGas: BigInt(2000000),
verificationGasLimit: BigInt(2000000),
paymasterAndData:'0x',
signature: await simplePasskeyAccount.getDummySignature()
};

const signature = await simplePasskeyAccount.signUserOperation(userOperation);
``
Feel free to use these steps to integrate SimplePasskeyAccount into your project.