User authentication with a person’s Ethereum at Metamk
As an Ethereum developer, you are probably known for the importance of authentication and user tests in your applications. In this article, we will study how to authenticate the user using their Ethereum account using Metamk Personalsign.
What is Personalsign?
Personalsign is a patented signature service provided by Metamk, allowing users to safely sign transactions on the Ethereum network without subjecting their private keys. This feature offers several benefits including:
- Reduced Risk of Compromise (two -factor authentication)
- Ability to generate and save session ID for multiple accounts
- Support for a large number of signatures for signature
Why use Personalsign?
Personalsign is a great option when you need to use users without subjecting their private keys. This approach brings a number of benefits:
* Security : Private keys are never exposed by reducing the risk of 2FA compromise.
* Scalability : Users can sign multiple accounts and session ID without additional costs or complexity.
* Elasticity : Personalsign supports a variety of uses, including signing contracts, sending the ether and more.
Personalsign Setup to Metamass
To start working with a person at Metamk:
- Open the Metamask account and go to the « Settings » menu (three horizontal line in the upper right corner).
- Click « Advanced », and then select « Personal Sign ».
- Generate a new session ID by clicking « Create Session ».
- Click « Save the session » to save the session ID.
User authentication using Personalsign
To authenticate the user using his Ethereum account using the person’s design:
- Open Metamk and go to the « Settings » menu.
- Select « Advanced » and then select « Personal Sign ».
- Enter the following parameters:
* Personal.Sign (Required): This indicates that you want to use personal signing for authentication.
* Session.id (Required): Use your generated session ID from Metamka Settings Pages.
* Accountaddress (Required): Ethereum address you authenticate.
- Click « Submit » to authenticate the user.
Code Example
Here is an example of a code fragment that shows you how to use a person’s design in the JavaScript application:
`JavaScript
Const web3 = ask (‘web3’);
Const Metamk = ask (‘Metamk’);
// Initialize Metamk with your wallet mnemonic or private key
Const Metamk = New Metamak ({
Accounts: ‘0xyourwalletaddress’,
});
// authenticate the user using person’s design
Metamk.personal.sign (
(Sessionid) => {
// Use the session ID to sign the transaction at Ethereum
Web3.eth.sendtransaction ({
from: ‘0xyouraccountaddress’,
to: ‘0xyourrecipientaddress’,
Value: Web3.Util.Towei (‘1’, ‘ether’),
Data: »,
}, (error, answer) => {
IF (error) {
Console.Error (error);
} else {
Console.log (Successful Transaction! Session ID: $ {Sessionid});
}
});
},
);
// Clean the session ID
Metamk.personal.clearsessionid ();
`
In this example, we use a person’s design to sign an Ethereum transaction using the user’s account address. Then we use the generated session ID for sending the transaction.
Conclusion
Personalsign provides a safe and customizable way to authenticate users with their Ethereum accounts in Metamk. With these activities and examples, you can easily integrate the design of a person into your applications and protect sensitive data while providing an invisible user experience.
