Encrypting digital holography with aberrated phase of the object wavefront
Li Zheng · Journal of Zhejiang University of Technology · 2006
In the paper a novel way to encrypt digital holograms,which is based on phase-aberrated rectifying of holograms,is proposed.Encrypted digital holograms are generated by scrambling pixels of the original holograms with encryption functions on their Fourier's planes.The phase-aberrated functions are the secret keys for encrypt and decrypt.The complexity of the encrypting and decrypting algorithm are both O(n logn).There is no data expanding after encrypting images.It will be convenient for data accessing and transmitting.The algorithm is implemented on the platform of Matlab 6.1.It has been used to encrypt and decrypt some amplitude Fourier's digital holograms.The security has been tested too.The experimental results show that the secrecy and security of the algorithm are rather good.