Image Encryption Algorithm Based on Four-dimension Chaotic Map
Honge Ren · Jisuanji gongcheng · 2008
The initial sensitivity and randomness of the chaotic map make the image encryption algorithm based on chaotic theory become a hot researching field recently.Many people adopt the low-dimension chaotic map to encrypt,however,the high-dimension map is more complex and has more parameters.This paper uses the four-dimension map to encrypt image,at the time of increasing the key quantities,the encryption speed is not reduced.Moreover the abilities of resisting exhaustive attack and statistic attack are enhanced.For an image of 1 024×768 24 bits BMP,encryption cost approximately 0.35 s and decryption cost approximately 0.361 s,then it can meet the transmission requirement.