Spatial Domain Image Selective Encryption Algorithm Based on Quadtree Encoding
Qing Zhou · Jisuanji gongcheng · 2008
This paper proposes a selective encryption algorithm based on quadtree structure.It encodes the bitplane of spatial domain image byquadtree encoded, shuffles and selectively encrypts the data according to the structure of quadtree encoding.The quantity of encrypted data andsecurity of the algorithm is analyzed.Experimental results show that this algorithm has high security, and the quantity of encrypted data is only50 percent of the normal encryption algorithm.