A high performance cipher circuit device for security of digital hologram

摘要

wavelet-dimensional holographic image (hereafter referred to as original hologram) conversion by encrypting the sub-band and relates to subband in a high-performance digital holographic encryption circuit device by inverse wavelet transform to generate an encrypted hologram image (the encrypted hologram), the input image is a hologram (the original hologram), or a first multiplexer receiving the sub-band ; A first input receiving the original hologram or sub-band from the multiplexer the two-dimensional wavelet transform (DWT) circuit for generating a lifting sub-band by applying; Energy calculator from the lifting circuit receives the sub-band to calculate the energy of the sub-band; A second multiplexer that receives the encrypted sub-band from the sub-band or password circuits from the lifting circuit; A memory for receiving and storing the input sub-band from the second multiplexer; Password input circuit for receiving the encrypted sub-band from the memory; And, receiving the energy of each sub-band energy from the energy calculation unit is selected, the largest sub-band (the selected sub-band), and, if the energy of the selected subband is smaller than a predetermined threshold level (the threshold energy) memory to enter the selected sub-bands are stored in groups first multiplexer, and the energy of the selected sub-band to provide a configuration that includes a sub-band controller which to enter the selected sub-band is stored in the memory is greater than the energy threshold circuit with a password. By high-performance digital holographic encryption circuit device as described above, a cell capable of performing a unit operation on a recurring basis, and, by configuring the circuit for feeding back the lifting circuit and password based on the memory circuit, simplifying the circuit configuration, and the best You can. ;