Two-dimensional code information hiding method based on run-length coding

Abstract

The invention discloses a run length coding-based two-dimensional code information hiding method. The method comprises the following steps of: simultaneously processing carrier information carrier andsecret information set; Before a two-dimensional code is generated, embedding secret information secret to be encrypted into carrier information card through an encryption algorithm, then generatingencrypted information into a two-dimensional code image QR, and genertaing a key Key; enabling The sender to send the two-dimensional code image QR to a receiver; And after receiving the QR of the two-dimensional code image, enabling the receiver to decrypt the QR through a decryption algorithm to obtain carrier information carrier and secret information set. And compressing the text information by adopting a run-length coding algorithm to obtain bits in which information can be embedded, thereby achieving the encryption purpose of the invention. The two-dimensional code information hiding method based on run-length coding has the advantages of being large in transmitted information amount, good in information concealment, high in robustness and compression resistance, high in safety and the like.

Description

technical field [0001] The invention relates to an information hiding method, in particular to a two-dimension code information hiding method based on run-length coding. Background technique [0002] Two-dimensional code is also called two-dimensional barcode. The common two-dimensional code is QR Code. The full name of QR is Quick Response. It is a very popular coding method on mobile devices in recent years. It can store more The information can also represent more data types. [0003] From a visual point of view, the QR code is composed of multiple black and white blocks, which are "randomly arranged" in a rectangular area, and the human eye cannot recognize any information. In essence, the positions of the black and white blocks in the QR code are arranged in a matrix form, and the black or white blocks at each position are used to represent 0 and 1 in binary respectively, so as to store the required information. A QR code image consists of a data area and a functional...

AI Technical Summary

Problems solved by technology

At present, the research on the information hiding of two-dimensional codes mainly focuses on the former, and its research stops at the image level, and does not involve the encoding method and the structure of two-dimensional codes.

[0005] Two-dimensional codes combine text and images, and traditional binary images or text information hiding are no longer applicable

But it does not cover how to encrypt and decrypt encrypted information

Images