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Erschienen in:
23.09.2016
Research on the Hash Function Structures and its Application
Erschienen in: Wireless Personal Communications | Ausgabe 4/2017
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Abstract
Since the traditional classic hash function structure (MD structure) is suffering from all kinds of attacks, the research of new hash function structure becomes hot issue. This paper analyses these attacks, based on MD structure, this paper brings in two security parameters and improves the message padding scheme, and then designs a Double-Serial iterative structure. In this structure, since there are more message blocks affecting the chaining variables, it can not only avoid the traditional second collision attack, multicollision attack and second preimage attack of long message, but also accelerate the message diffusion and enhance the avalanche effect. According to the efficiency analysis and security authentication, this proposed structure improves security and has the same efficiency of Double-Pipe structure.