three different image databases. The security of the method is assured by the robustness of the chaotic PRNG and the secrecy of the cryptographic key.
The paper illustrates an image hashing scheme and an image verification system based on jointed hashing and watermarking algorithms. We propose an image hashing scheme based on a set of robust features extracted from jointed DCT-DWT frequency domains and enciphered using an efficient chaotic system. The proposed hashing algorithm and a… (More)