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Information hidden encrypting/decrypting method and device based on virtual imaging

A technology of information hiding and virtual imaging, applied in the field of information security, can solve the problems of difficult data encryption application in the system, inconvenient analog-to-digital conversion, large volume of optical components, etc., to achieve the elimination of physical limitations, strong anti-interference performance, The effect of large degrees of freedom

Inactive Publication Date: 2006-08-09
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The main reason is that optical components based on free space propagation are large in size, high in cost, inflexible in use, and inconvenient for analog-to-digital conversion
Systems constructed with such optical components are difficult to apply in practical data encryption

Method used

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  • Information hidden encrypting/decrypting method and device based on virtual imaging
  • Information hidden encrypting/decrypting method and device based on virtual imaging
  • Information hidden encrypting/decrypting method and device based on virtual imaging

Examples

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Embodiment Construction

[0033]Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. For ease of description, the master-slave type encryption / decryption system formed with a general-purpose PC, a digital signal processor, and a programmable application-specific integrated circuit is an embodiment, and the following descriptions will focus on this

[0034] Examples are described in detail.

[0035] figure 1 It is a schematic diagram of the working principle of a master-slave encryption / decryption system composed of a general-purpose PC, a digital signal processor (DSP), and a programmable application-specific integrated circuit (FPGA). figure 2 Is the block diagram of its hardware structure. The master-slave encryption / decryption system uses the general-purpose PC 101 as the master, and the DSP subsystem 102 as the slave. Software programming is used to realize information exchange and real-time communication, interface selection, ma...

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Abstract

The present invention belongs to the field of information safety. The information hiding encrypting / decrypting method adopts parallel hardware and software including electronic device and algorithm and simulating virtual imaging process for information hiding encryption / decryption. The encryption of image information includes the sampling of information plane, adding random template and performing discrete Fresnel transformation under the set parameters. The decryption includes calculating the complex amplitude distribution of the random template in the back surface of the lend with corresponding decryption parameters and the subsequent diffraction of the complex amplitude distribution of information object reflected light wave on the back lens surface in distance d1 to obtain original information image. The method is also suitable for phonetic information. The device used includes is one master-slave system comprising PC, DSP and ASIC or one embedded system.

Description

technical field [0001] The invention relates to an information hiding encryption / decryption method based on virtual imaging, which belongs to the field of information security. Background technique [0002] Traditional data encryption methods are based on cryptographic principles and encryption techniques based on mathematical algorithms. With the continuous improvement of computer computing speed and the increasing development of distributed processing technology, some original encryption algorithms (such as: DES, RSA algorithm) have been cracked. At present, most of the encryption algorithms used in China are low-strength encryption algorithms that will be eliminated abroad. The resulting insecurity has become an important issue that hinders economic development and threatens national security. [0003] Data encryption technology based on optical information processing is a new "non-mathematical" data encryption method that has been develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/14G06F17/16G06F9/44G03H1/16H04L9/00
Inventor 彭翔张鹏牛憨笨
Owner SHENZHEN UNIV
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