Double random phase encoding using phase reservation and compression

作者：Chen Wen^*; Chen Xudong

来源：Journal of Optics, 2014, 16(2): 025402.

DOI：10.1088/2040-8978/16/2/025402

• optical encryption and decryption
• double random phase encoding
• phase reservation
• phase compression
• information authentication

In recent years, various studies have been conducted to illustrate the vulnerability of double random phase encoding (DRPE). In this paper, we propose a novel method via phase reservation and compression to enhance DRPE security. Only a compressed phase distribution is available in the CCD plane, and the amplitude component is not available or requested for optical decryption. Since only noise-like distributions can be obtained by using the correct security keys during optical decryption, a nonlinear correlation algorithm is further applied for authenticating the decrypted image. It is demonstrated that valid conditions for attack algorithms are broken and high security can be achieved for the DRPE system.

• 出版日期2014-2