This paper proposes a new image encryption
technique based on a new chaotic system consists of joining two
chaotic maps: the logistic chaotic map and the cubic chaotic
map. This chaotic system is used to encrypt the R, G, B
components of a colored image at the same time and the three
components affect each other. So the correlations between R, G,
and B components were reduced and the security of algorithm
was increased. Simulation results show that the algorithm
satisfy the required performance tests such as high level security
and large key space which larger than the key space of related
work.