| Summary: | 碩士 === 東海大學 === 資訊工程與科學系 === 92 === In recent years, various kinds of services offered on the internet are incorporated into our daily life rapidly, so the security which belongs to personal secret information becomes very important. Due to various kinds of threats exist on the Internet, for example, there might be an illegal person who wants to steal some secret information not belonging to him from the Internet, it is the very urgent to develop a safe and effective mechanism. Thus, in this thesis, we study and analyze a series of relevant researches in this aspect. Our goal is to propose an effective method to frustrate the various attacks and other malicious damages in the login and authentication phases between an user and a remote system. Our method of a password table and a smart card which make our mechanism portable, secure and convenient. Thus, we make a much more reliable circumstance on the Internet.
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