Study of the Hyperchaos-based Hash Function in E-commerce Applications

Along with the rapid development of Internet communication and e-commerce technology, the security is becoming more and more important. Digital signature technology by using hash function can effectively address the security issue. This paper presented a new iterated hash function based on a hyperchaotic cellular neural network system and a double-pipe structure in order to obtain the better cryptographic properties. The function encodes a message of arbitrary length into a hash value with a fixed 128-bit length. Computer simulation and theoretical analysis such as one-way property analysis and attacks resistance analysis are conducted and the results indicate that the proposed hash function has desirable security properties.