2D Bar-Codes for Authentication: A Security Approach

Cléo Baras (1) , François Cayre (1)

1 GIPSA-CICS - GIPSA - Communication Information and Complex Systems

In this paper, we investigate the authentication problem of real-world goods on which 2D bar-codes (2D-BC) were printed and we take the opponent's point of view. The opponent is assumed to have access to N_c noisy copies of a genuine 2D-BC (noise being due to printing and scanning processes). A simple estimator of the 2D-BC based on copies averages is proposed, letting the opponent print a fake 2D-BC which aims at being declared as genuine by the system detector. Performance of the estimator in terms of error probability at the detector side is then derived with respect to N_c and compared with experimental results on real 2D-BC. It is shown that the opponent can produce a fake that successfully fools the detector with a reasonable number of genuine goods.

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Cléo Baras, François Cayre. 2D Bar-Codes for Authentication: A Security Approach. EUSIPCO 2012 - 20th European Signal Processing Conference, Aug 2012, Bucarest, Romania. pp.1. ⟨hal-00709394⟩