Vault was developed as part of Apple WWDC22 Swift Student Challenge. I became one of the winners at the yearly event for Vault!

Project

Vault is a two factor authenticator app which generates time based OTPs(One Time Passwords). It uses the HMAC type of message authentication involving SHA1 cryptographic function. This is based on TOTP(Time based One Time Passwords) algorithm.

Tech Used

• iOS App Development
• Swift5
• SwiftUI
• CryptoKit SDK

Project Components

For demonstration purposes, the project contains two sections in itself - the Vault app (which is the two factor authenticator app) and the Wallets app (which is a list of wallets, each having a secret key that is shared between the authenticator and the respective wallet). The Wallets app is a simulation of a generic wallet app, which are secured with 2 factor authentication. In order to open a wallet, the user would first need to go to the Vault app and check for the real time OTP(generated every 60 seconds). Then the user needs to enter that OTP in the wallet login screen. Entering the correct OTP would let them access the wallet details.

Features

• The Vault app generates a new OTP every 60 seconds using the secret key of the respective wallet. It also contains a circular progress bar for each wallet showing the time left for that OTP to expire.
• The Wallet app contains a list of wallets, each having a unique secret key. A wallet can be unlocked using the OTP for that respective wallet only. Thus it is secured by the Vault app. Once the wallet is unlocked, the user gets to the wallet details page. The wallet details page contains the portfolio for that respective wallet.
• The project also contains the How It Works section. Here the user is presented with a horizontal carousel of cards which explain the working of Two Factor Authentication process.
• The project has a very intuitive UI in each of its sections. It also has a touch of neumorphic UI with some of the cards having shadows as well as beautiful gradient colours as well as logos.