Hash algorithm has long been used in information security field. Most of compression functions of existing hash algorithms are the type of iteration. The advantage of this type is with highly algorithmic speed and the disadvantage is that it is difficult to prove its security. Based on the existing algorithm,this paper proposed a hash function S-RFSB. The new scheme adopted Sponge structure,which was more efficient than the traditional MD structure. Transformation function design used coding theory difficul...