期刊论文

Ding, Xiangling

英文

OPTICS AND LASER TECHNOLOGY

0030-3992

2014

57

110-118

10.1016/j.optlastec.2013.10.002

Computer simulations are performed on a Matlab 7.0.0 (R14) platform to verify the security and robustness of this cryptography. An original color image comprising 128×128 pixels, as shown in Fig. 4(a), is used as the input image to be enciphered. In order to guarantee the three color components can be retrieved without being superimposed, we locate the three color components in the centered and zero-padded images (512×512 pixels) as the input plaintexts, and the three parameters (a1,b1), (a2,b2)

本校为其他机构

We propose an optical color image cryptosystem based on position multiplexing technique and phase truncation operation. Compared with the reported color image encryption method, we employ the position multiplexing technique to encrypt the color image in only one spatial channel. Meanwhile, our proposed method can maintain the nonlinear characteristic of the cryptosystem and avoid various types of the currently existing attacks, especially the iterative attack. Simulation results are presented to demonstrate the...