Blockchain authenticator app code

Blockchain Authentication refers to systems that verify users to the resources found on the underlying technology of Bitcoin and other digital currency. The blockchain uses public-key cryptography PKC to encrypt wallets, or the places on the blockchain where value or work is securely stored. Blockchain authentication therefore raises interesting similarities between the technology itself and securing it. With crytocurrency wallets being a main feature, identity and access management IAM for the blockchain is almost a given, however its user experience UX and user interface UI are very poor without a modern authentication component such as True Passwordless Security. It should be noted that cryptography engineers and blockchain developers often share an affinity for the two fields, making blockchain developers an important part of the security and innovation landscape. Password-protected wallet apps were one answer to this call.

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Content:

• 2 Factor authentication with Smart Contracts
• 2FA compromise led to $34M Crypto.com hack
• How to invest in cryptocurrency: Exchanges, apps, wallets and more
• How to Buy AFEN Blockchain (AFEN) [For Beginners]
• How to Connect a Two-Factor Authentication (2FA) API to a Smart Contract With Chainlink
• Solving a blockchain conundrum: Biometrics could recover lost encryption keys

WATCH RELATED VIDEO: How to Recover Your Google Authenticator Codes When You Lose Your Phone

2 Factor authentication with Smart Contracts

In my previous post I described how smart contracts may be used to implement payment processor software. Today I will present my another inspiration how smart contracts might be used. Two-factor authentication is a type of multi-factor authentication. Most of us probably use 2FA for our bank account transfers or even for email e. Most common methods are one-time-passwords generated by an application or a hardware token or SMS messages with secret codes.

Why not to use smart contracts for that? Smart contracts may receive along with Ether and tokens data from an account that are in hand of users or computers , so we may use Blockchain as an authentication channel. Data are kept on the Blockchain and might be read by everybody.

Security of this authentication channel depends mainly on keeping private key secret. However I assume, that most Ethereum users is aware of fact that PK is something that should be protected. Only user that authenticated with both factors will be trusted by the app. Here is how in that case the 2FA with the Blockchain may look like:. Maybe it sounds a bit complex but we may sum it up in 2 sentences:.

You will find complete code of the Dapp in GitHub repository, but please read the post first. The smart contract which stores a token and associated sender account address is super easy.

In this implementation I used uint type for token to save gas since storing e. Prover is the address of user that is trying to authenticate. The backend part is not that simple. In my example I used Express as a backend server. It serves 2 things:. Single-page-app is quite ordinary except that is uses Web3 JS library that exposes simple API for communicating with smart contracts.

This library must be provided by web browser e. Backend service is just a mock for the purpose of that blogpost. When user logs in with password the session is created, however the verification flag is set to false, so he is not fully authenticated. Then authentication token is randomly generated, saved and sent to the user.

Now user needs to send token to the smart contract with the Ethereum account that was provided during registration. The most important parts are where it creates a proxy object to interact with the contract line 2 and sends the token line All the rest is boilerplate.

At the end backend verifies if token was set by the user and if it was, the token verification flag in session is set to true. Now user is authenticated by both factors and application on both ends on front and backend will trust him. What are benefits of that solution? Phone number is easy to trace and most of people want to keep their number private.

There is no need to integrate with third parties such as SMS gateways or authentication tokens providers. Ethereum network guarantees high availability with no cost. On the other hand 2FA authentication in this manner will cost user real money. Couple cents with current gas prices per each attempt. The other problem is time, user will need to wait from about 15 second up to couple minutes depending on Gas price that was set. This could be improved when Proof-of-stake will be implemented on Ethereum network.

The other issue might be transparency of blockchain, other third party e. You must be aware of that, when designing solution. On the other hand it forces developers and companies to design their applications and businesses in a way to benefit from Blockchain pros and avoid its limitations. Source code discussed in this blogpost is available on GitHub. You may avoid some of those issues by using private blockchain but running private blockchain might be complex and expensive.

Custom software development; architecture, Scala, Akka, Kafka, blockchain consulting. Sign in. Blockchain Ethereum Crypto Security 2fa. SoftwareMill Tech Blog Follow. More From Medium. Joel John in DeFi Alliance. Ecosystem Growth Round Announcement. ByteNext in ByteNext.

Upgrades and Interns. Volt Technology in The Capital. An Introduction to Epik protocol. Wonder Maey.

2FA compromise led to $34M Crypto.com hack

Buy, sell, trade, and stake today! Reports of data breaches occur at greater and greater frequency as digital services continue to dominate the world. These breaches happen across a spectrum of organizations from tech companies to government bureaucracies. An unfathomable amount of personal information and passwords have been exposed, leaving millions of accounts vulnerable. Since the inception of internet based services, almost all accounts have been secured with a username and password combination. What can we do to mitigate the potential damages of our personal credentials such as username and passwords ending up in the wrong hands?

How to invest in cryptocurrency: Exchanges, apps, wallets and more

Own and control your digital identity and protect your privacy with highly secure user experiences. Engage with less risk, use electronic data verification, and improve transparency and auditability. Decentralized identity is a trust framework in which identifiers, such as usernames, can be replaced with IDs that are self-owned, independent, and enable data exchange using blockchain and distributed ledger technology to protect privacy and secure transactions. A standards-based decentralized identity system can provide greater privacy and control over your data. Microsoft believes everyone has the right to own their digital identity, one that more securely and privately stores all personal data. This identity must seamlessly integrate into daily life and give complete control over data access and use. Learn more about decentralized identity and blockchain technology in this episode of Azure Friday. Azure Active Directory Azure AD enables the use of decentralized identifiers and verifiable credentials to validate and share information digitally. The Azure AD verifiable credentials solution preview provides self-service enrollment and faster onboarding for your users.

How to Buy AFEN Blockchain (AFEN) [For Beginners]

Despite its origins in Bitcoin, Blockchain technology has found its way into a wide range of other cryptocurrencies. With improved privacy being a major benefit of Blockchain technology, it only makes sense to incorporate two-factor authentication as an added layer of security on blockchain wallets to protect your assets. If you are an investor or an aspiring investor who wants to know vechain or the price of other cryptocurrencies, below are everything you need to know about two-factor authentication for your blockchain wallet and the price of vechain. Two-Factor authentication also known as 2FA or 2-Step Verification adds an extra layer of security to your wallet. In this technique, the owner will first enter a username and password, and then will be asked to supply further information before being able to access their blockchain wallet.

How to Connect a Two-Factor Authentication (2FA) API to a Smart Contract With Chainlink

Mobile wallets are useful bits of kit that let you manage your crypto on the go and easily make transactions. Discover how mobile wallets work and which mobile wallets are the best with CryptoMeister! You can generally add multiple addresses for each currency when using a mobile wallet, increasing your privacy. Mobile wallets go everywhere you go and can often be secured using biometrics, if your device supports it. You can always set up 2-factor authentication 2FA on your mobile wallets as well as strong passwords to crank your security up a notch.

Solving a blockchain conundrum: Biometrics could recover lost encryption keys

This is not good as healthcare remains a primary target of cybercriminals. So Healthcare IT News has interviewed a cybersecurity expert to get his views on where healthcare cybersecurity will be headed in What do you see on the horizon in when it comes to technological advances in healthcare cybersecurity? There are at least three technological advances that will apply to healthcare cybersecurity and across other industries as well. They are password-less authentication, secure access service edge SASE and zero trust.

This post contains affiliate links. We may be compensated when you click, sign up for, deposit, or spend on a given platform. Learn more. The primary reason for this is that in crypto, unlike with say your bank account, there is no fraud protection or recovery process for stolen funds if your accounts get hacked!

You can also use the desktop password generator which is also customizable. You can configure a random password by choosing the password length and whether it has:. All you have to do is paste your authenticator code when prompted. No need to type the web address url in the browser as well. You can have all your Authenticators on two or more devices.

For the Digital Bridge technical integration, we developed a Chainlink External Adapter to read an off-chain, high-availability 2FA API authentication service, and we also configured a custom Digital Bridge Chainlink oracle node that relays the secret codes needed to confirm 2FA. In order to authenticate the user holding the 2FA secret code, a user submits a transaction on-chain containing their customer ID and the hash of their temporary one-time password generated by their authenticator app. Once the Chainlink node receives a response, it delivers this Boolean value on-chain, which, if authorized TRUE , then triggers the smart contract to grant authorization to the original user. This implementation avoids man-in-the-middle attacks by using a hash of the PIN and an External Adapter to compare the PIN to the off-chain authenticator. To facilitate testing and development, we provide a demo API with sample users, which is accessible with demo API keys. In this example, the jobSpec is f82dfadbc7afe47a4d. Actions may be any of the following: customerid or hashedpin.

The move was necessary as recent data released by the APWG reported that phishing attacks have tripled since , with over million user attempts being made to access over 1. All of the top 25 cryptocurrency exchanges currently use Authenticator for 2FA. Authenticator and industry competitor Authy became second-generation 2FA models, which were built to address the vulnerabilities of mobile text codes being intercepted by hackers.