Identity Authentication Based on Two-Beam Interference

Abstract

A two-factor identity authentication method on the basis of two-beam interference was presented. While verifying a user's identity, a specific "phase key" as well as a corresponding "phase lock" are both mandatory required for a successful authentication. Note that this scheme can not only check the legality of the users, but also verify their identity levels so as to grant them hierarchical access permissions to various resources of the protected systems or organizations. The authentication process is straightforward and could be implemented by a hybrid optic-electrical system. However, the system designing procedure involves an iterative Modified Phase Retrieval Algorithm (MPRA) and can only be achieved by digital means. Theoretical analysis and simulations both validate the effectiveness of our method.

Color image encryption based on enhanced optical interference with different diffraction distances and linear phase color-blend

“…However, the inherent silhouette problem [22][23][24][25][26][27][28][29][30] caused by the equipollent natures of the POMs makes IBE fragile. Different enhanced IBE methods [22][23][24][25][26][27][28][29][30][31][32][33][34] have been put forward to eliminate the silhouette problem. For example, Zhang et al [22] interchanged the corresponding parts of the two POMs randomly.…”