Multi-image encryption based on interference of computer generated hologram

Abstract A multi-image encryption scheme based on interference of computer generated holograms (CGH) is proposed. The encrypted information can be divided into several parts and recorded by corresponding CGHs that distribute randomly. With interference of all CGHs, the original information can be reconstructed. So the multi-image encryption is achieved, and every hologram can be regarded as the key to the corresponding image. Multi-user authentication and storage of information is implemented by applying unique CGH to interfere the common CGH. Furthermore, the CGHs can be cascaded to implement classification of images. When images of different level are assigned to corresponding user, hierarchical encryption is completed successfully. Numerical simulation verifies the feasibility of the method, and demonstrates the security of the algorithm and the decryption characteristics. Flexibility and variability of scheme can be higher than the existing methods. There are a lot of scheme's details still to consider and fulfill in the future.

[1]  G. Unnikrishnan,et al.  Optical encryption by double-random phase encoding in the fractional Fourier domain. , 2000, Optics letters.

[2]  X C Cheng,et al.  Security enhancement of double-random phase encryption by amplitude modulation. , 2008, Optics letters.

[3]  C. Niu,et al.  An encryption method with multiple encrypted keys based on interference principle. , 2010, Optics express.

[4]  Linfei Chen,et al.  Image encryption with fractional wavelet packet method , 2008 .

[5]  Lilong Cai,et al.  Data encryption by disarranging the holographic information with rotated holograms , 2003 .

[6]  Jingjuan Zhang,et al.  Multiple-image encryption by wavelength multiplexing. , 2005, Optics letters.

[7]  Osamu Matoba,et al.  Secure holographic memory by double-random polarization encryption. , 2004, Applied optics.

[8]  Yan Zhang,et al.  Optical encryption and verification technique for information coding in multiple-wavelengths in Fresnel domain , 2006 .

[9]  Yiqing Gao,et al.  Three-dimensional display using computer-generated hologram based on virtual optics , 2010 .

[10]  Myrian Tebaldi,et al.  Multiplexing encryption technique by combining random amplitude and phase masks , 2009 .

[11]  Weimin Jin,et al.  Optical image encryption based on multichannel fractional Fourier transform and double random phase encoding technique , 2007 .

[12]  Shutian Liu,et al.  Image encryption based on double random amplitude coding in random Hartley transform domain , 2010 .

[13]  Dafne Amaya,et al.  Wavelength multiplexing encryption using joint transform correlator architecture. , 2009, Applied optics.

[14]  Ran Tao,et al.  Optical image encryption based on the multiple-parameter fractional Fourier transform. , 2008, Optics letters.

[15]  Yan Zhang,et al.  Optical multi-image encryption based on frequency shift , 2011 .

[16]  Joseph Rosen,et al.  Three types of computer-generated hologram synthesized from multiple angular viewpoints of a three-dimensional scene. , 2006, Applied optics.

[17]  Xingyuan Wang,et al.  Color image encryption using spatial bit-level permutation and high-dimension chaotic system , 2011 .