Research And Construction Of CA Trust Model

Public Key Infrastructure(PKI) provides a security platform for electronic commerce, and the construction of trust model is a key step during the implementation of PKI systems at the beginning. This paper analyzer the often used trust models and proposes a new multi-level zoning bridge trust model which adopts single trust model inside organizations while using mixed trust model among outer trust zones. The mixed trust model is the combination of multi-level bridge and mesh trust model, dividing bridges of each level. This paper uses four kinds of predications which belong to Maurer and Cross to describe the MLZBTM. Using the improved diffluence algorithm to search certificate path, and the capability of multi-level zoning trust model is analyzed. Aiming at its insufficiency of overload that leads to jam of network and abnormal work of other systems, an improved structure of LDAP is proposed.