Research On Carrier-free Information Hiding Methods In Social Network Environment

Nowadays,with the development of Internet,information security has been widely concerned.Information hiding technology is a significant subject.It has been widely applied in secret communication and property protection.The growth of social networks greatly facilitates people's life.Social software and short video media platforms can be used to information hiding.Based on social network and short video platforms,the works of information hiding were as follows:(1)A new method of generating information hiding based on social behaviors was proposed.The current methods only used a single software to embed information,which caused low embedding capacity and inadequate concealment.Those methods did not make full use of the characteristics of social networks and vast amounts of social behaviors.Aiming at these problems,a generative information hiding method based on different social spaces was proposed.By using massive users and behaviors,multiple spaces were taken as carriers.The carrier spaces and Cartesian production operations on these spaces were defined,and the communication contract function with key as parameter was given to encode the carrier spaces.Based on these consensuses,both sides of the communication realized the transmission of secret messages.Researches showed that this method significantly improved the embedding capacity of steganography and had high concealment.(2)A method based on short videos' classification and duration was proposed.Short video platforms are prevalent,resulting in a significant quantity of short video resources.In order to make full use of these resources,a carrier free information hiding method based on short video classification and duration was proposed.This method classified the short video content,set a specific category as the bits-taking flag.Furthermore,it divided the short video duration into intervals,which were used to map the secret messages,represented the start and end of communication,represented users' everyday lives.Compared with other methods of social network,this method had the embedding capacity of 5 bits / video,high concealment and robustness.The two methods proposed in this paper are carrier-free steganography,which have strong robustness and concealment.These methods also have good performance in embedding capacity.