LAUSR

With the explosive growth of smart phones in recent years, QR code is becoming more and more popular. This work presents a new electronic access control system for smart building based on QR code. The system exploits the single-key-lock mechanism to generate keys for users and locks for QR code reader on the door. After being encrypted using a symmetric-key cryptography algorithm, the keys are used to generate a QR code as its message. Then the system exploits the XOR characteristics of a Reed-Solomon code and a fusion strategy to synthesize aesthetic QR code from user’s photo and QR code. Aesthetic QR code as a carrier of user’s credential will be assigned to user. When user presents the aesthetic QR code to QR code reader, the QR code reader will decode and decrypt the key, then directly make the access decision by performing an operation between key and lock. Experimental results show that the proposed access control system has the attributes of low cost, flexibility, high security, and offline verification. Moreover, the generated aesthetic QR code is resistant to common image degradation attacks.