A seminar entitled Optical Security Using Double Random Phase Encryption Based on Linear Canonical Transform with Sparse Representation Technique hold at the College of Science, Department of physics. 

The presenter Israa Mohammed Qasim demonstrates the most important objectives of her study for a novel method for optical image encryption and authentication to overcome the weakness of the existing cryptosystem. The linear canonical transform (LCT) will be used in DRPE scheme and combined with the sparse representation technique to obtain an asymmetric encryption system. The numerical simulation proved that the correct authentication results are satisfied despite the use of partially encrypted data. The randomly selective sparse encrypted data reinforces the security of amplitude encoding of DRPE-LCT. Thus, the proposed method added an additional layer to optical security systems. The attacks analysis is implemented in order to show the robustness of the proposed security. In addition, this method has fulfilled the transmission and storage requirements owing to the high reduction of information data.