Title :
Discrete Gyrator Transform based optical image encryption and decryption using Double Random Phase Mask
Author :
Karpagam, S. ; Sudheer, S.K. ; Pillai, V. P. Mahadevan
Author_Institution :
Dept. of Optoelectron., Univ. of Kerala, Thiruvananthapuram, India
Abstract :
A new method for Discrete Gyrator Transform (DGT) based image encryption and decryption using Double Random Phase Mask (RPM) is proposed. In the present work encryption and decryption has been done using Gyrator Transform (GT) a kind of discrete algorithm using convolution operation. The proposed method uses DGT to reduce the computational load. The robustness of the proposed algorithm to blind decryption in terms of different key values has been calculated. Numerical simulations and some analysis for security have been presented to verify its validity and efficiency.
Keywords :
convolution; cryptography; discrete transforms; image processing; convolution operation; discrete gyrator transform; double random phase mask; image decryption; optical image encryption; Algorithm design and analysis; Encryption; Gyrators; Optical imaging; Signal to noise ratio; Transforms; Discrete Gyrator transform; image decryption; image encryption; random phase mask;
Conference_Titel :
Fiber Optics in Access Network (FOAN), 2013 4th International Workshop on
Conference_Location :
Almaty
Print_ISBN :
978-1-4799-1502-6
DOI :
10.1109/FOAN.2013.6648825
