Improving the Efficiency and Security of Dynamic QR Code-Based Access Control Systems Using ECDSA and CTR-DRBG

Today access to information on infrastructure often uses a QR Code. One way to ensure secure access to information or infrastructure is to use a QR Code. Given that QR Code data is easy to read, Susukailo et al. proposed a method to overcome this problem by using the RBAC system and encrypting data using RSA. However, the use of the RSA algorithm requires high time complexity. This research improves the previous method by introducing a digital signature applied to QR codes to provide information security for access control systems. With a digital signature, data integrity is guaranteed, and owner authentication can be carried out. The method used for digital signatures is ECDSA which operates with groups of elliptic curves as a calculation basis. Based on the discussion, the proposed method is secure and efficient as an access control system for the office area.