Awesome OTP Generator and Verifier

🔐 Secure and simple OTP (One-Time Password) generator and verifier with SMS integration.

Overview

This repository contains a Java application that generates and verifies OTPs using a MySQL database and sends the OTP to a mobile number via an SMS API.

🌟 Key Features:

• Generate random 6-digit OTPs.
• Verify OTPs with time and date constraints.
• Send OTPs via SMS using an external API.

Table of Contents

• Installation
• Usage
• Configuration
• Database Setup
• SMS API Integration
• Demo: Database Table
• Contributing
• License

Installation

1. Clone the repository:

   git clone https://github.com/your-username/your-repository.git
   cd your-repository

2. Download the MySQL Connector/J JDBC driver JAR file and add it to your project's classpath.

   • MySQL Connector/J: Download Link

3. Compile and run the Java application:

   javac Main.java
   java Main

4. Follow the instructions in the console to input mobile numbers, OTPs, and verify the OTPs.

Usage

• Input your mobile number to receive an OTP via SMS.
• Enter the received OTP to verify.

Configuration

Before running the application, you need to set up the following configurations:

• JDBC Server Host Link:

  • Replace YOUR_JDBC_SERVER_HOST_LINK in Main.java with your MySQL server link.

• Database Credentials:

  • Replace YOUR_USER_NAME and YOUR_PASSWORD in Main.java with your MySQL username and password.

• SMS API Credentials:

  • Replace YOUR_SMS_API_URL/ENDPOINT and YOUR_SMS_API_KEY in Main.java with your API details.

Database Setup

1. Create a MySQL database named otp.

2. Execute the following SQL script to create the otptable table:

   CREATE TABLE otptable (
       id INT AUTO_INCREMENT PRIMARY KEY,
       mobile VARCHAR(11) NOT NULL,
       code VARCHAR(6) NOT NULL,
       date DATE NOT NULL,
       time TIME NOT NULL
   );

SMS API Integration

1. Sign up for an SMS API service and obtain your API key.

2. Replace YOUR_SMS_API_URL/ENDPOINT and YOUR_SMS_API_KEY in Main.java with your API details.

Demo: Database Table

Here's a demo of the otptable database table:

id	Mobile	Code	Date	Time
1	1234567890	123456	2023-11-27	12:34:56
2	9876543210	654321	2023-11-26	18:45:30

Contributing

Contributions are welcome! Feel free to open issues or submit pull requests.

License

This project is licensed under the MIT License.