Abstract: Internet will be the main platform that the computer applications run on. Because of the openness and complicacy of Internet, such traditional technology as ALL and PKI cannot completely solve the security problems of computer applications. The trust management technology based on security credentials and trust valuation technology on base of direct history experience and recommendation experience, which solve the trust problems of open and coordinated environment using the trust relations among entities, arc the hot spots in security research of Internet applications present1y. Based on the status quo, an overview was made in this paper, in which the current research situation about trust. gement and trust valuation technology at home and abroad were analyzed and summarized. Subsequently, their advantage and weakness were pointed out, too. Finally, a prospect for further interesting research directions was proposed.

Key words: Internet application, Trust, Trust management, Trust valuation