2-Factor authentication with 2D Barcodes
Luke Hebbes, Christopher T. Chan · Research Repository (Kingston University London) · 2011
An improved user-friendly secure authentication scheme using 2D barcodes is proposed in this paper. The proposed scheme uses a known mobile device as a second factor to decode an encrypted message transferred as a 2D barcode and read via a camera on the mobile device. A one-time passcode is produced from this for authentication. Elliptic curve public-key codes are used on a PKI-SIM card to encrypt a challenge as well as additional temporal data. The proposed scheme improves the security and usability of multi-factor authentication and transaction verification without requiring increased investment in hardware or user training.