Study on Kerberos protocol based on fuzzy control

In order to prevent password attack and replay attack existing in Kerberos protocol, the traditional method was to make use of encryption techniques and authentication techniques on enhancing the security of protocol itself, but it was failure to prevent protocol´s external factors of impacting on security. In this regard, this paper proposes to use of the method of fuzzy control to realize the security identification of Kerberos protocol by embedding three fuzzy controllers and a system health and safety validator (SHSV) in the protocol; wherein the SHSV is to collect the health and security information in the client, whereas the three fuzzy controllers are using to process and determine the external security factors of the relevant servers respectively. This proposed method can be able to effectively realize on assessment and prevention from the potential and existing threats caused by protocol´s external factors of security.