Expiring OTP Generator

Expiring OTP Generator is a simple Node.js module for generating and managing expiring one-time passwords (OTPs). It provides a straightforward way to generate OTPs, store them with an expiration time, verify OTPs, and automatically clean up expired OTPs.

Installation

npm install expiring-otp-generator

const otpGenerator = require('expiring-otp-generator');

• Generate and store an OTP:

  const email = '[email protected]';
  const expiryTime = 60000; // 1 minute in milliseconds
  const otp = otpGenerator.generateAndStoreOTP(6, email, expiryTime);

• Verify the OTP:

  const isVerified = otpGenerator.verifyOTP(otp, email);
  if (isVerified) {
      console.log('OTP verification successful');
  } else {
      console.log('OTP verification failed');
  }

• Start the cleanup interval:

  otpGenerator.startCleanupInterval();

API

• generateAndStoreOTP(length: number, email: string, expiryTime?: number): string

  • Generates an OTP of the specified length, associates it with the provided email, and stores it with an optional expiration time. Returns the generated OTP.
    • length: The length of the OTP.
    • email: The email to associate with the generated OTP.
    • expiryTime: Optional. Expiration time for the OTP in milliseconds. Default is 5 minutes.

• verifyOTP(otp: string, email: string): boolean

  • Verifies the provided OTP for the given email. Returns true if the OTP is valid; otherwise, returns false.
    • otp: The OTP to verify.
    • email: The email associated with the OTP.

• startCleanupInterval(): void

  • Starts an automatic cleanup interval to remove expired OTPs. The cleanup interval runs every 60 seconds by default.

License

This project is licensed under the MIT License.

Acknowledgments

This module is inspired by the need for a simple and efficient expiring OTP solution. Special thanks to the Node.js community for their valuable contributions and feedback.