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In this paper,based on coupled network generated by chaotic logarithmic map,a novel algorithm for constructing hash functions is proposed,which can transform messages and can establish a mapping from the transformed messages to the coupled matrix of the network.The network model is carefully designed to ensure the network dynamics to be chaotic.Through the chaotic iterations of the network,quantization and exclusive-or (XOR) operations,the algorithm can construct hash value with arbitrary length.It is shown by simulations that the algorithm is extremely sensitive to the initial values and the coupled matrix of the network,and has excellent performance in one-way,confusion and diffusion,and collision resistance.
In this paper, based on coupled network generated by chaotic logarithmic map, a novel algorithm for constructing hash functions is proposed, which can transform messages and can establish a mapping from the transformed messages to the coupled matrix of the network. Network model is carefully designed to ensure the network dynamics to be chaotic. Through the chaotic iterations of the network, quantization and exclusive-or (XOR) operations, the algorithm can construct hash value with arbitrary length. It is shown by simulations that the algorithm is extremely sensitive to the initial values and the coupled matrix of the network, and has excellent performance in one-way, confusion and diffusion, and collision resistance.