Else it will respond as an Invalid Token. If the code is valid then it will generate the JWT and respond. It will fetch the secret key with the username provided and pass it to the verify method of the “” code verifier. This endpoint accepts username and TOTP as payload. Further, generate the QR code and add it to the response. It will check for user existence, if the user already exists then respond with a UserAlreadyExist exception, else Generate the Secret key, encode the password received, and persist the user details. Register endpoint will accept the registration details including the username and password as payload. We will be using “” to generate and verify TOTP. Angular 14 is our Front end which will connect to the backend over rest endpoints. We will implement the Backend server in Spring Boot and Mongo DB as a Persistence layer. This will be generated by the authenticator application, this will be validated by the server using the time bucket the OTP is entered. As a next step, they will be prompted for OTP. Upon login, the user will provide the credentials and validate. The system will generate a QR code that combines the Algorithm, number of digits, and period that will be used by the server to generate the TOTP. When the user registers into our application system will generate a secret key and that will be stored in DB. Imagine a secure system that combines something you know (like a password) with something you have (a device generating a one-time password). Authentication apps like Microsoft Authenticator and Google Authenticator support the TOTP standard. TOTP is also known as app-based authentication, software tokens, or soft tokens. The time-based passwords are available offline and provide user-friendly, increased account security when used as a second factor. Unique numeric passwords are generated with a standardized algorithm that uses the current time as an input. TOTP stands for Time-based One-Time Passwords and is a common form of two-factor authentication (2FA).
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