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Two-dimensional code image optical encryption method, system and device thereof and storage medium

An encryption method and two-dimensional code technology, applied in the optical encryption method of two-dimensional code image and its system, storage medium, and device fields, can solve problems such as indistinguishability, system complexity, and increased burden on the encryption system, so as to avoid system complexity Degree, reduce the effect of noise crosstalk

Active Publication Date: 2019-07-05
FOSHAN SHUNDE SUN YAT SEN UNIV RES INST +2
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Problems solved by technology

However, in the existing optical-based encryption technology, there are at least the following problems in the actual application: noise interference, image corruption, etc. will inevitably be encountered in the process of information transmission, resulting in the final decrypted image In severe cases, the image will be completely damaged and indistinguishable; in addition, in the existing multi-image-based optical encryption technology, additional system complexity will be introduced, which will further increase the burden on the complex encryption system. Aggravated, out of practical application level
Moreover, noise crosstalk between images will inevitably occur in multi-image encryption, and this type of noise cannot be eliminated

Method used

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  • Two-dimensional code image optical encryption method, system and device thereof and storage medium

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0057] It should be noted that, if there is no conflict, various features in the embodiments of the present invention may be combined with each other, and all of them are within the protection scope of the present invention. In addition, although functional units are divided in the schematic diagram of the system, and a logical sequence is shown in the flowchart, in some cases, the division of units in the system or the sequence shown in the flowchart may be executed differently. or the steps described.

[0058] With the rapid development of Internet technology and the rapid growth and interaction...

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Abstract

The invention discloses a two-dimensional code image optical encryption method and system, a device and a storage medium. An original image to be encrypted is stored by using a two-dimensional code image; carrying out gray scale transformation on the two-dimensional code image; obtaining a transformed two-dimensional code pixel matrix; then, carrying out optical encryption operation based on fractional Fourier transform on the image; and after the encryption operation, carrying out threshold-based effective information extraction and integration operation to obtain a final encrypted image, sothat introduction of extra system complexity can be avoided, noise crosstalk among a plurality of images is reduced, and lossless recovery of the original image in a later decryption process is facilitated by using the two-dimensional code as a container of the original image.

Description

technical field [0001] The invention relates to the field of encryption technology, in particular to an optical encryption method for a two-dimensional code image, a system, a device, and a storage medium thereof. Background technique [0002] With the rapid development of Internet technology and the rapid growth and interaction of data in the era of big data, Internet-based data information, audio, video and image transmission methods gradually replace traditional offline transmission channels and become the main means for a large number of users to interact with information . Therefore, how to ensure the privacy, security and transmission quality of data transmission in the context of big data interaction has become an important issue in the field of information security today. Since P Refregier invented the Double Random Phase Encoding technology (Double Random Phase Encoding) in 1995, this optical-based information encryption technology has received a lot of attention, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/32G06K19/06
CPCG06K19/06037G06K19/06046H04N1/3216H04N1/32267H04N1/32272H04N1/32347
Inventor 谭洪舟林远鑫陈荣军谢舜道朱雄泳曾衍瀚
Owner FOSHAN SHUNDE SUN YAT SEN UNIV RES INST
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