A Fast Safe Improved Chaotic Video Encryption Algorithm
Jianbin Xie · Signal Processing · 2008
Video Processing has several characteristics such as large quantity,high redundancy,strict real-time property.Based on the research of some Video Encryption Algorithm (VEA) in former papers,a fast and safe improved chaotic video encryption algorithm which can satisfy the Video Processing application demand has been proposed in this paper.The algorithm has some improvements:First, the algorithm hrings forth a L-hits binary key producing method which uses iterative mode between Logistic-Map and Chehyshev-Map in order to overcome the hugs of the invalid-keys and the quasi invalid-key existing in one dimension Chaotic Dynamical System,then these L-hits binary keys are never repeated used to encrypt the important video image data,so the algorithm has high security and can effec- tively avoid the attack of the known p|aintext;Second,there is only XOR operation in the algorithm and the need of memory storage is small,so the speed is very fast;Third,as some special data such as the GOP information in MPEGⅡdata flow have been reserved,the encrypted files have the same format and size and can be played normally;in addition,this algorithm can be used for any compressed vid- eo data,so it's transplantable property is good.