11/27/2023 0 Comments Creating an otpIf the remaining time is less than or equal to zero, display an error message box saying the OTP expired.Īctivate the resend OTP button, set the OTP to none, and terminate. If stop_timer is true, terminate the loop. Record the starting time and run an infinite loop that takes the current time and calculates the elapsed and remaining time. Self.timer_thread = threading.Thread(target=self.timer_countdown)ĭefine a method, timer_countdown(). Organize these elements using the pack method.īuilding the Functionality of the Applicationĭefine a method, start_timer() that runs timer_countdown in a separate thread. Set its parent element, the text it should display, the command it should execute when clicked, and its font styles. Set its parent element, its width, and its font styles.Ĭreate three buttons to send OTP, resend OTP, and Verify OTP. Similarly, create two entry widgets to get input from the user. Set the parent element, the text it should display, and the font styles it should possess. import tkinter as tkĭefine three labels to ask for a mobile number, and an OTP, and to display a timer after the program sends an OTP. Set the expiration time to two minutes.ĭefine a class, OTPVerification, and initialize the constructor to set the default values of variables along with initializing the root window, and setting the title, and dimensions of the application. Initialize the Twilio client to authenticate and be the entry point for API calls. Import the necessary modules and set the authentication credentials. Returns an int of the remaining seconds.You can find the entire source code for building an OTP Verification System using Python in this GitHub repository. interval - (int) The interval you are using for your codes, defaults to the standard 30 seconds.This will return the remaining seconds based on the lastUsedTime variable, that is only set when using generateTOTP* functions. OTP.generateTOTPCode(String secret, int currentTime, ) # I am defaulting to no padding, as this is the predominant behavior I am finding for HOTP. If you enable this, it will use the same padding as TOTP (repeating the secret to the right length) but might cause incompatibilies with other libraries. (examples: otplib and speakeasy from Node.js) This is needed as HOTP does not have an official method of using SHA256 or SHA512 in the RFC spec and most libraries don't pad HOTP for use with SHA256 or SHA512. Uses the TOTP padding method for handling secrets bigger or smaller than the mandatory sizes for SHA256/SHA512. UseTOTPPaddingForHOTP (bool, default: false) All generate functions force decode of Base32. If your secrets are not Base32 forms, please use my Base32 library (the one I use as a dependency for this library) or any other base32 library to encode your secret before passing it into the functions. It is what is used standard most places, and by Google Authenticator. This library does not support any other secret input other than Base32. (String versin of function incase of leading 0) : (you can use 'any' instead of a version if you just want the latest always) dependencies:
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