One way Hash function construction based on Spatiotemporal chaos

A Hash function construction method based on spatiotemporal chaos is proposed. We take the rumor after linearly transformed as a group of initial values and utilize the one-way coupled map lattice of spatiotemporal chaos to iterate the group of initial values concurrently. Then in spatiotemporal chaos convergence the proper items of the chaos convergence produced in the last space are linearly transformed into Hash value of 128 bits. The result obtained shows that the Hash function based on spatiotemporal chaos have advantages of irreversibility, weak collision and sensitivity to initial values. The method has a stronger secret performance than the Hash function based on low-dimensional chaos maps, and it is simple to be realized.