The Radio Frequency Identification(RFID) authentication protocol based on Hash lock and key updating may lead to desynchronization which makes the tag-to-reader authentication fall into failure.

An efficient Hash table scheme for packet classification;

This paper gives a standard way to encode and store a game state into hash(table),so the memory of hash table can be used more effectively and higher hit rate can be gotten in Scout search method.

In this paper,develop an algorithm DHP with improved Hash table for efficient large itemset generation.

In this paper we analyse the method of mining frequent set based on the hash tree, discuss data structure trie , and present a new method of mining frequent set based on trie tree.

Hash tree is a data structure that is used frequently.

Develop ed hash tree based algorithm for generation of frequent k itemsets.

For an anonymous bid,a new electron auction is presented based on Hash chain with constructing a Hash chain,root of the chain and Hash value of the random number submitted to the auctioneer by only one time.

The finite length of Hash chain limits its applications.

An authentication scheme for mobile commerce based on self-renewal hash chains scheme(SRHC) was proposed,and a micro-payment protocol was designed.

Then a Merkle Hash tree is built for each subgroup of packets,and the Hash value of every root is appended to preceding packets to form Hash chains.