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In this paper, an image encryption algorithm based on DNA random coding and random operation combined with chaotic map is proposed. In order to produce sequences with more chaotic characteristics, a new spatiotemporal chaotic system is proposed by employing the Tent-Sine system (TSS) in the coupled map lattice (CML). SHA-256 hash of the plain image is used to generate secret keys. The Lorenz Map, Logistic Map and TSS are applied to generate all parameters the proposed algorithm needs. In orderdblp:journals/ijnsec/LiZX18 fatcat:2y3pbievbja6vkviswuk4tbsre