Encrypted RFID Vault Lock Variant 7 Kit: AES-128 Access Control with Arduino Mega & MFRC522

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Turn a standard RFID reader into a cryptographically secure vault lock. This kit walks you through capturing MIFARE card data, decrypting AES-128 encrypted UIDs on-device, and comparing them against a stored hash—all before energizing a solenoid bolt. You’ll assemble a standalone access system that logs every attempt with a real-time timestamp, perfectly suited for protecting server racks, weapons safes, or confidential research enclosures.

What You'll Build

By the end of this project, you’ll have a wall-powered, enclosed lock that reads MIFARE Classic cards, verifies their identities through on-board AES-128 decryption, and actuates a 5V solenoid via relay. The OLED screen shows access granted/denied status along with the time from the DS3231 RTC. Because validation happens against a hashed secret stored in Arduino Mega’s memory—never transmitted externally—the lock cannot be defeated by simple UID cloning or replay attacks.

What You'll Learn

• Implement AES-128 decryption on Arduino Mega for RFID card UID verification
• Interface the MFRC522 reader with MIFARE Classic cards and handle encrypted sector reads
• Pair a DS3231 real-time clock with a 0.96-inch OLED to log and display access events
• Drive a high-current solenoid lock through a relay module while protecting circuits with 1N4007 flyback diodes

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Engineers and cybersecurity hobbyists who want to harden physical access with real encryption. It’s especially relevant for B.Tech ECE/EEE final-year projects, Smart India Hackathon teams prototyping secure storage solutions, and professionals running ATL Tinkering Labs who mentor advanced students. You should already be comfortable with Arduino IDE, basic soldering, and uploading firmware—this project introduces block cipher concepts directly on the Mega.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.

Choose your assembly option:

• Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.