A two-dimensional code information hiding method based on run-length coding

Abstract

The invention discloses a two-dimensional code information hiding method based on run-length coding, which simultaneously processes the carrier information carrier and the secret information secret; before the two-dimensional code is generated, the secret information secret to be encrypted is embedded into the carrier information carrier through an encryption algorithm , and then generate a two-dimensional code image QR from the encrypted information, and generate a key Key; the sender sends the above two-dimensional code image QR to the receiver; after receiving the above two-dimensional code image QR, the receiver decrypts it through a decryption algorithm Obtain carrier information carrier and secret information secret. A run-length coding algorithm is adopted to compress the text information to obtain bits that can be embedded in the information, so as to achieve the encryption purpose of the present invention. The two-dimension code information hiding method based on run-length coding of the present invention has the advantages of large amount of transmitted information, good information concealment, high robustness, compression resistance, and high security.

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