Image encryption technique using clustering and stochastic standard map

In recent years, encryption technology has been developed quickly and many image encryption methods have been put forward. This paper presents a technique of image encryption based on image clustering as preprocessing. Permutation and substitution processes are done by using a series of secret keys that generated by proposed stochastic standard map. Image decryption is done using the reverse operations of image encryption and using adding process rather than clustering to recover an image. Experimental results verify and prove that the proposed technique is secure and fast.