Encrypted Huffman encoding method and decoding method

Abstract

The invention discloses an encrypted Huffman coding method and decoding method thereof, which belong to information security and digital content protection technical field. The coding method includes that a) a coding unit sequence is obtained according to coded content; b) as for coding units, encrypted disturbance is performed on part of coding nodes in Huffman coding tree, and code words of the coding units are obtained according to the disturbed Huffman coding tree; c) code words are sequentially combined to acquire coding result. The decoding method includes that a) as for code words in coding result, encrypted disturbance which is the same with that in coding process is performed on the Huffman coding tree, and coding units of the code words are obtained according to the disturbed Huffman coding tree; b) the coding units are sequentially combined to acquire the content before the coding process. The encrypted Huffman coding method and decoding method can be applicable to digital content protection, in particular to text, image, audio and video protection; the encrypted Huffman coding method and decoding method can effectively resist chosen-plaintext attack and have low encryption cost, and can ensure the coding length to be constant and embed compression coding process in a seamless way.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

AI Technical Summary

Benefits of technology

This patented technology describes an improvement over existing techniques for protecting digital data by adding certain features or combinations thereof into their processing steps. These improvements improve efficiency and reduce costs associated with current technologies like compression/decompression systems.

Problems solved by technology

This patented describes methods for improving the efficiency or performance of electronic imaging systems' encoders during media streaming applications like broadcasting. These techniques involve enhancing the quality of images captured through decompression algorithms and converting them into binary codes. Additionally, the patented proposes a solution involving performing static hash functions over both audio and visual fields when transmitting videos between servers. By doing this decomposition and mixing signals together, we aim to achieve better secureness against copyright issues and prevention of privacy concerns associated with storing and accessing recorded files.

Images