Data encryption method and device

Abstract

The invention provides a data encryption method. The method comprises the following steps of acquiring an ith bit character of a character string to be encrypted, inquiring a sequence number corresponding to the ith bit character in a preset appointed word stock, inquiring a character corresponding to the sequence number in an encrypted word stock, forming an ith bit encrypted character, and rotating the ith bit encrypted character in an inner ring of the encrypted word stock to a preset target position in an anticlockwise displacement mode; and acquiring an i+1th bit character of the character string to be encrypted, and traversing the above steps till that the character string to be encrypted is encrypted. The invention also provides a data encryption device. The device comprises the appointed word stock module, an encrypted word stock module, a data acquisition module, a data query module and an adjusting module. By using the data encryption method and the apparatus thereof, through continuously changing an arrangement mode of characters in the encrypted word stock, arrangement sequences of the characters in the encrypted word stock corresponding to each character to be encrypted are different; and decoding difficulty of data is increased and data safety is increased too.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a data encryption method and device. Background technique [0002] With the development of information technology, the security requirements for data transmission and storage are getting higher and higher. For example, in the communication process, if the data in the transmission link appears in the form of plain text, then anyone who intercepts the data can directly interpret the data; on the contrary, if the data appears in the form of cipher text, then even if the data is Interception, the other party can not understand the meaning of the data. [0003] In the existing data encryption method, when the plaintext is obtained, the corresponding encrypted character is queried in the corresponding encrypted database, and then the encrypted character is output to complete the encryption of the plaintext to obtain the ciphertext, and then send it out. This method can avoid any interce...

AI Technical Summary

Problems solved by technology

[0004] However, the existing data encryption methods are too simple and relatively easy to crack. Relevant technicians can quickly discover the rules and crack the ciphertext, which cannot safely protect data transmission.

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