Explanation of Sha-3 Algorithm by the Third Round Activities

Abstract

On Dec. 10, 2010, the NIST declares the fore five algorithms for SHA-3 competition: Keccak, Skein, JH, Grøstl, BLAKE. In this paper, we introduce the five candidates. The news extension of BLAKE uses the Mode of LAKE. Grøstl follows the design principles of AES. JH uses the cycle structure of SPN. Keccak adopts the sealing sponge structure. SKEIN is a one-way function which is extended from the design of Three fish group password. After introducing and comparing the five candidates, we made a list of their respective characteristics.