BLK data encryption method and device and storage medium

Abstract

The embodiment of the invention provides a BLK data encryption method and device and a storage medium, belongs to the technical field of computers, and solves the problem that key exhaustion becomes possible due to obvious plaintext features in the prior art. The method comprises the following steps of: obtaining a first group of operation parameter variables and a second group of operation parameter variables by using a first preset secret key and a hash secret key of a set byte through a nonlinear mode Q shift register; converting the to-be-encrypted data into to-be-encrypted bytes with a set byte length; encrypting the byte to be encrypted by utilizing the first group of operation parameter variables, the second group of operation parameter variables, a preset replacement table and a preset replacement table to obtain a ciphertext; according to the byte length of the to-be-encrypted data, converting the ciphertext into a password with the same length as the byte length, wherein thefirst preset key, the hash key, the first set of operation parameter variables, the second set of operation parameter variables, the preset replacement table and the preset replacement table are all character type variables. The embodiment of the invention is suitable for a data encryption process.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a BLK (BLOCK CIPHER, block key) data encryption method, device and storage medium. Background technique [0002] In the quantum era, data encryption is attacked from two aspects, one is the attack on the key, and the other is the attack on the ciphertext. The method of attacking the ciphertext is generally to decipher the attack by enumerating the key. Since the plaintext has obvious characteristics, it is easy to become a discriminant condition, making exhaustive enumeration possible. Therefore, there is an urgent need for an encryption method whose decryption result cannot show the characteristics of plaintext and cannot provide exhaustive discrimination basis. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a BLK data encryption method, device, equipment and storage medium, which realizes the use of charact...

AI Technical Summary

Problems solved by technology

Since the plaintext has obvious characteristics, it is easy to become a discriminant condition, making exhaustive enumeration possible

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