🔐 SmartCardManager

SmartCardManager is a secure and intelligent system for managing and analyzing card information.
It enables users to store, protect, and retrieve card details with real-time card variant detection, issuing bank identification, and robust user authentication.

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🚀 Features

• ✅ Secure card storage with encryption (AES)
• ✅ Card variant detection (Visa, MasterCard, RuPay, AmEx, etc.)
• ✅ Issuing bank identification using BIN/IIN (first 6 digits) via external API
• ✅ Google Sign Up and Login integration (OAuth 2.0)
• ✅ Email-based Forgot Password (via OTP or reset link)
• ✅ Change Password functionality (from old password)
• ✅ Dynamic card UI with flip animation (front and back preview)
• ✅ Authentication system with JWT tokens

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🧠 Tech Stack

Layer	Technology
Frontend	React.js + Tailwind CSS
Backend	Node.js + Express.js
Database	MongoDB (for user and card storage)
Authentication	JWT, bcrypt, Google OAuth 2.0
Security	AES encryption for card numbers
External APIs	BIN/IIN Lookup APIs

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🧪 How It Works

1. ✍️ User signs up (with email-password or Google account).
2. 🔐 Card details are saved securely with AES encryption.
3. 🔎 First 6 digits (BIN/IIN) are used to fetch card variant and issuing bank via API call.
4. 🔑 Forgot password and password change flows handled securely.
5. 📦 All cards are displayed with a live, animated card preview.
6. 🔓 Cards are decrypted only when displaying to the user.

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📊 Example Output

{
  "card_variant": "Visa",
  "card_type": "Debit",
  "issuing_bank": "ICICI Bank",
  "card_number_encrypted": "U2FsdGVkX1+89abcdeFGHIJKLmn=="
}

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📋 Key Modules

• Authentication — Secure signup/login (Email & Google)
• Forgot Password — Email-based password reset system
• Change Password — Update password using old password
• Card Manager — Add, View, Update, Delete cards securely
• Card Analyzer — Identify card variant and issuing bank using API
• Dynamic Card UI — Real-time preview with animations

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🌟 Future Enhancements

• 🔐 Implement Two-Factor Authentication (2FA)
• 🌐 Build public APIs for external integrations
• 📱 Create a mobile-first Progressive Web App (PWA)
• 📈 Improve user dashboard with analytics and usage stats
• 🧾 Export card data securely in user reports

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📜 License

This project is open-source and available under the MIT License.

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❤️ Support

If you like SmartCardManager, please ⭐ the repository and share it with others!
Your support helps keep the project growing!