In the world of e-commerce we will f ind a lot of sellers who present goods with original brands. Vendors sometimes sell counterfeit goods with well-known brands. Some of these counterfeit products are of good quality at high prices and some are of ordinary quality at relatively low prices with a look that looks like the original brand, so that customers sometimes think that the item is an original item. For this reason, in conducting online transactions, trust is needed between buyers and sellers.