Plaintext encryption method and system based on seven-order magic cube

Abstract

The invention provides a plaintext encryption method based on a seven-order magic cube, which comprises the steps of obtaining a secret key for encryption; generating an initial coordinate of a seven-order magic cube based on the obtained secret key; and constructing the seven-order magic cube gradually by taking the initial coordinate as the origin, wherein, the secret key is formed of binary numbers in a certain length and the seven-order magic cube comprises a 7*7 matrix with 1 to 7 layers and the coordinate variables comprise rows, columns and layers; determining the plaintext and reordering the plaintext based on the constructed seven-order magic cube to obtain the cryptograph; obtaining an S box by arranging the plaintext into a rectangle in dependence on ASCII codes; and outputting the cryptograph after character displacement for encryption. According to the embodiment, the potential safety trouble brought by character encryption algorithm simply is overcome; the complex and tedious process of image encryption is overcome; and a better encryption effect can be realized.

Description

technical field [0001] The invention relates to the technical field of cryptography, in particular to a plaintext encryption method and system based on a seventh-order magic cube. Background technique [0002] Cryptography is a science with a long history. With the rapid development of computer science in the 21st century and the unparalleled influence of the information age, information itself has become wealth. In order to protect information security, passwords have become an important means of ensuring information services and interactions in various fields of business, finance and society. The use of passwords can prevent information from being illegally stolen, tampered with or destroyed. [0003] At present, the widely used plaintext encryption methods mainly include the method of using symmetric encryption algorithm and the method of using asymmetric encryption algorithm. The common feature of the above two methods is to use the key to encrypt and decrypt the plainte...

AI Technical Summary

Problems solved by technology

[0003] At present, the widely used plaintext encryption methods mainly include the method of using symmetric encryption algorithm and the method of using asymmetric encryption algorithm. The common feature of the above two methods is to use the key to encrypt and decrypt the plaintext ciphertext. However, in practical applications , often requires users to save at least one of the keys (such as using a user name and password to log in), and the key in text form inevitably brings security risks of disclosure or snooping

[0004] Therefore, in order to solve the security risks brought by the above two methods, the method of using image encryption algorithm has become a new type of encryption. This method usually converts the image into two-dimensional data, and then encrypts it with traditional encryption algorithm. Due to the scrambling High requirements (blurred images can also be recognized), so more complex and cumbersome processes are often required to achieve better encryption results

[0005] It can be seen that there is an urgent need for a plaintext encryption method that can overcome the security risks caused by the simple use of text encryption algorithms, and can also overcome the complex and cumbersome process of image encryption to achieve better encryption effects

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