Encryption method based on virtual optics and device therefor

Abstract

The invention provides an encryption method. An optical imaging process is simulated in a digital region by using an algorithm and an electronic device; a series of irreversible operations of phase replacement are added on an object plane and an image plane; and various digital information (including images, voice, texts, and the like) is calculated so as to obtain Hash values. The invention alsoprovides a device for realizing the method. The method and the device realize the asymmetrical encryption in the field of optical information safety for the first time, not only provide an authentication function for data completeness, but also provide a theoretical support for the entrance of an optical data encryption method into a public key infrastructure (PKI). The method and the device havestrong adaptability, flexibility and expandability. A system of the invention utilizes an electronic processor to construct an optical Hash function in the digital region so that physical restrictions caused by optical elements can be completely eliminated and operability enhancement and easy realization can be achieved. The method and the device have good universality. An embedded system can be formed to finish the authentication of the data completeness on time and in real time.

Description

【Technical field】 [0001] The invention relates to information security technology, in particular to an encryption method and device based on virtual optics. 【Background technique】 [0002] In the context of the popularization of today's digital networks, the issue of information security is becoming more and more prominent. In general, there are two aspects to consider: on the one hand, use various encryption algorithms to protect the information to be transmitted, so that it can resist passive attacks; On the other hand, it is necessary to be able to prevent the opponent from actively attacking the system, such as forging and tampering with information. Authentication (Authentication) is the main means against active attacks, and it plays an important role in the security of various information systems in open networks. The construction of the Hash function is an indispensable step to realize various authentication schemes, and it is also a key factor to determine whether ...

AI Technical Summary

Problems solved by technology

However, due to the reversibility of the optical path, all kinds of optical cryptographic algorithms are limited to the scope of symmetric cryptography, and cannot be applied to the widely used PKI at present, and cannot achieve data integrity authentication, nor can it effectively prevent data forgery and tampering

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