The Study On Certificate Authentication Technology Based On The Multilevel Network

This thesis based on the secure management flat,design an certificate authentication system for the workers of the secure management flat,which provides secure services such as identity authentication,data secure transmission,non_denied,integrality.Though these services, we realize an trusty environment to solve the secure problem which the secure management flat falls across.At first,this thesis studies the theories of conventional encryption algorithms,public key cryptography and hash function.Then,it fully comprehends PKI theory and technology structure thoroughly based on encryption knowledge.Then,author studies and practices the design scheme of certificate authentication system based on multilevel network and the PKI.This thesis realized the SSLSocket modal with SSL technology,through which all external communication is encrypted to ensure information security;it,based on mature CA system, adopt encryption technology and CA technology recognized by country encryption committee.CA adopt level CA authentication structure to be convenient in system extension and improvement of system efficiency,the design use model structure to be convenient to extend the function of the system.The final fruit of the study is to realize the author realize the below functions such as certificate application,certificate auditing,certificate issue,certificate revoking,certificate query and certificate CRL,also to provide certificate application such as signature,encryption,and information digest.It possesses better applied value and application foreground.